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pact-jvm-consumer-groovy-v3 =========================== Groovy DSL for Pact JVM implementing V3 specification changes. ##Dependency The library is available on maven central using: * group-id = `au.com.dius` * artifact-id = `pact-jvm-consumer-groovy-v3_2.11` * version-id = `2.2.x` or `3.0.x` ##Usage Add the `pact-jvm-consumer-groovy-v3` library to your test class path. This provides a `PactMessageBuilder` class for you to use to define your pacts. If you are using gradle for your build, add it to your `build.gradle`: dependencies { testCompile 'au.com.dius:pact-jvm-consumer-groovy-v3_2.11:2.2.12' } ## Consumer test for a message consumer The `PactMessageBuilder` class provides a DSL for defining your message expectations. It works in much the same way as the `PactBuilder` class for Request-Response interactions. ### Step 1 - define the message expectations Create a test that uses the `PactMessageBuilder` to define a message expectation, and then call `run`. This will invoke the given closure with a message for each one defined in the pact. ```groovy def eventStream = new PactMessageBuilder().call { serviceConsumer 'messageConsumer' hasPactWith 'messageProducer' given 'order with id 10000004 exists' expectsToReceive 'an order confirmation message' withMetaData(type: 'OrderConfirmed') // Can define any key-value pairs here withContent(contentType: 'application/json') { type 'OrderConfirmed' audit { userCode 'messageService' } origin 'message-service' referenceId '10000004-2' timeSent: '2015-07-22T10:14:28+00:00' value { orderId '10000004' value '10.000000' fee '10.00' gst '15.00' } } } ``` ### Step 2 - call your message handler with the generated messages This example tests a message handler that gets messages from a Kafka topic. In this case the Pact message is wrapped as a Kafka `MessageAndMetadata`. ```groovy eventStream.run { Message message -> messageHandler.handleMessage(new MessageAndMetadata('topic', 1, new kafka.message.Message(message.contentsAsBytes()), 0, null, valueDecoder)) } ``` ### Step 3 - validate that the message was handled correctly ```groovy def order = orderRepository.getOrder('10000004') assert order.status == 'confirmed' assert order.value == 10.0 ``` ### Step 4 - Publish the pact file If the test was successful, a pact file would have been produced with the message from step 1.

pact-jvm-consumer-groovy-v3 =========================== Groovy DSL for Pact JVM implementing V3 specification changes. ##Dependency The library is available on maven central using: * group-id = `au.com.dius` * artifact-id = `pact-jvm-consumer-groovy-v3_2.11` * version-id = `2.2.x` or `3.0.x` ##Usage Add the `pact-jvm-consumer-groovy-v3` library to your test class path. This provides a `PactMessageBuilder` class for you to use to define your pacts. If you are using gradle for your build, add it to your `build.gradle`: dependencies { testCompile 'au.com.dius:pact-jvm-consumer-groovy-v3_2.11:2.2.12' } ## Consumer test for a message consumer The `PactMessageBuilder` class provides a DSL for defining your message expectations. It works in much the same way as the `PactBuilder` class for Request-Response interactions. ### Step 1 - define the message expectations Create a test that uses the `PactMessageBuilder` to define a message expectation, and then call `run`. This will invoke the given closure with a message for each one defined in the pact. ```groovy def eventStream = new PactMessageBuilder().call { serviceConsumer 'messageConsumer' hasPactWith 'messageProducer' given 'order with id 10000004 exists' expectsToReceive 'an order confirmation message' withMetaData(type: 'OrderConfirmed') // Can define any key-value pairs here withContent(contentType: 'application/json') { type 'OrderConfirmed' audit { userCode 'messageService' } origin 'message-service' referenceId '10000004-2' timeSent: '2015-07-22T10:14:28+00:00' value { orderId '10000004' value '10.000000' fee '10.00' gst '15.00' } } } ``` ### Step 2 - call your message handler with the generated messages This example tests a message handler that gets messages from a Kafka topic. In this case the Pact message is wrapped as a Kafka `MessageAndMetadata`. ```groovy eventStream.run { Message message -> messageHandler.handleMessage(new MessageAndMetadata('topic', 1, new kafka.message.Message(message.contentsAsBytes()), 0, null, valueDecoder)) } ``` ### Step 3 - validate that the message was handled correctly ```groovy def order = orderRepository.getOrder('10000004') assert order.status == 'confirmed' assert order.value == 10.0 ``` ### Step 4 - Publish the pact file If the test was successful, a pact file would have been produced with the message from step 1.

Pact provider ============= sub project of https://github.com/DiUS/pact-jvm The pact provider is responsible for verifying that an API provider adheres to a number of pacts authored by its clients This library provides the basic tools required to automate the process, and should be usable on its own in many instances. Framework and build tool specific bindings will be provided in separate libraries that build on top of this core functionality. ### Provider State Before each interaction is executed, the provider under test will have the opportunity to enter a state. Generally the state maps to a set of fixture data for mocking out services that the provider is a consumer of (they will have their own pacts) The pact framework will instruct the test server to enter that state by sending: POST "${config.stateChangeUrl.url}/setup" { "state" : "${interaction.stateName}" } ### An example of running provider verification with junit This example uses Groovy, JUnit 4 and Hamcrest matchers to run the provider verification. As the provider service is a DropWizard application, it uses the DropwizardAppRule to startup the service before running any test. **Warning:** It only grabs the first interaction from the pact file with the consumer, where there could be many. (This could possibly be solved with a parameterized test) ```groovy class ReadmeExamplePactJVMProviderJUnitTest { @ClassRule public static TestRule startServiceRule = new DropwizardAppRule<DropwizardConfiguration>( TestDropwizardApplication.class, ResourceHelpers.resourceFilePath("dropwizard/test-config.yaml")) private static ProviderInfo serviceProvider private static Pact<RequestResponseInteraction> testConsumerPact private static ConsumerInfo consumer @BeforeClass static void setupProvider() { serviceProvider = new ProviderInfo("Dropwizard App") serviceProvider.setProtocol("http") serviceProvider.setHost("localhost") serviceProvider.setPort(8080) serviceProvider.setPath("/") consumer = new ConsumerInfo() consumer.setName("test_consumer") consumer.setPactSource(new UrlSource( ReadmeExamplePactJVMProviderJUnitTest.getResource("/pacts/zoo_app-animal_service.json").toString())) testConsumerPact = PactReader.loadPact(consumer.getPactSource()) as Pact<RequestResponseInteraction> } @Test void runConsumerPacts() { // grab the first interaction from the pact with consumer Interaction interaction = testConsumerPact.interactions.get(0) // setup the verifier ProviderVerifier verifier = setupVerifier(interaction, serviceProvider, consumer) // setup any provider state // setup the client and interaction to fire against the provider ProviderClient client = new ProviderClient(serviceProvider, new HttpClientFactory()) Map<String, Object> failures = new HashMap<>() verifier.verifyResponseFromProvider(serviceProvider, interaction, interaction.getDescription(), failures, client) if (!failures.isEmpty()) { verifier.displayFailures(failures) } // Assert all good assertThat(failures, is(empty())) } private ProviderVerifier setupVerifier(Interaction interaction, ProviderInfo provider, ConsumerInfo consumer) { ProviderVerifier verifier = new ProviderVerifier() verifier.initialiseReporters(provider) verifier.reportVerificationForConsumer(consumer, provider) if (!interaction.getProviderStates().isEmpty()) { for (ProviderState providerState: interaction.getProviderStates()) { verifier.reportStateForInteraction(providerState.getName(), provider, consumer, true) } } verifier.reportInteractionDescription(interaction) return verifier } } ``` ### An example of running provider verification with spock This example uses groovy and spock to run the provider verification. Again the provider service is a DropWizard application, and is using the DropwizardAppRule to startup the service. This example runs all interactions using spocks Unroll feature ```groovy class ReadmeExamplePactJVMProviderSpockSpec extends Specification { @ClassRule @Shared TestRule startServiceRule = new DropwizardAppRule<DropwizardConfiguration>(TestDropwizardApplication, ResourceHelpers.resourceFilePath('dropwizard/test-config.yaml')) @Shared ProviderInfo serviceProvider ProviderVerifier verifier def setupSpec() { serviceProvider = new ProviderInfo('Dropwizard App') serviceProvider.protocol = 'http' serviceProvider.host = 'localhost' serviceProvider.port = 8080 serviceProvider.path = '/' serviceProvider.hasPactWith('zoo_app') { pactSource = new FileSource(new File(ResourceHelpers.resourceFilePath('pacts/zoo_app-animal_service.json'))) } } def setup() { verifier = new ProviderVerifier() } def cleanup() { // cleanup provider state // ie. db.truncateAllTables() } def cleanupSpec() { // cleanup provider } @Unroll def "Provider Pact - With Consumer #consumer"() { expect: verifyConsumerPact(consumer).empty where: consumer << serviceProvider.consumers } private Map verifyConsumerPact(ConsumerInfo consumer) { Map failures = [:] verifier.initialiseReporters(serviceProvider) verifier.runVerificationForConsumer(failures, serviceProvider, consumer) if (!failures.empty) { verifier.displayFailures(failures) } failures } } ```

Pact provider ============= sub project of https://github.com/DiUS/pact-jvm The pact provider is responsible for verifying that an API provider adheres to a number of pacts authored by its clients This library provides the basic tools required to automate the process, and should be usable on its own in many instances. Framework and build tool specific bindings will be provided in separate libraries that build on top of this core functionality. ### Provider State Before each interaction is executed, the provider under test will have the opportunity to enter a state. Generally the state maps to a set of fixture data for mocking out services that the provider is a consumer of (they will have their own pacts) The pact framework will instruct the test server to enter that state by sending: POST "${config.stateChangeUrl.url}/setup" { "state" : "${interaction.stateName}" } ### An example of running provider verification with junit This example uses Groovy, JUnit 4 and Hamcrest matchers to run the provider verification. As the provider service is a DropWizard application, it uses the DropwizardAppRule to startup the service before running any test. **Warning:** It only grabs the first interaction from the pact file with the consumer, where there could be many. (This could possibly be solved with a parameterized test) ```groovy class ReadmeExamplePactJVMProviderJUnitTest { @ClassRule public static final TestRule startServiceRule = new DropwizardAppRule<DropwizardConfiguration>( TestDropwizardApplication, ResourceHelpers.resourceFilePath('dropwizard/test-config.yaml')) private static ProviderInfo serviceProvider private static Pact<RequestResponseInteraction> testConsumerPact private static ConsumerInfo consumer @BeforeClass static void setupProvider() { serviceProvider = new ProviderInfo('Dropwizard App') serviceProvider.setProtocol('http') serviceProvider.setHost('localhost') serviceProvider.setPort(8080) serviceProvider.setPath('/') consumer = new ConsumerInfo() consumer.setName('test_consumer') consumer.setPactSource(new UrlSource( ReadmeExamplePactJVMProviderJUnitTest.getResource('/pacts/zoo_app-animal_service.json').toString())) testConsumerPact = DefaultPactReader.INSTANCE.loadPact(consumer.getPactSource()) as Pact<RequestResponseInteraction> } @Test void runConsumerPacts() { // grab the first interaction from the pact with consumer Interaction interaction = testConsumerPact.interactions.get(0) // setup the verifier ProviderVerifier verifier = setupVerifier(interaction, serviceProvider, consumer) // setup any provider state // setup the client and interaction to fire against the provider ProviderClient client = new ProviderClient(serviceProvider, new HttpClientFactory()) Map<String, Object> failures = new HashMap<>() verifier.verifyResponseFromProvider(serviceProvider, interaction, interaction.getDescription(), failures, client) // normally assert all good, but in this example it will fail assertThat(failures, is(not(empty()))) verifier.displayFailures(failures) } private ProviderVerifier setupVerifier(Interaction interaction, ProviderInfo provider, ConsumerInfo consumer) { ProviderVerifier verifier = new ProviderVerifier() verifier.initialiseReporters(provider) verifier.reportVerificationForConsumer(consumer, provider, new UrlSource('http://example.example')) if (!interaction.getProviderStates().isEmpty()) { for (ProviderState providerState: interaction.getProviderStates()) { verifier.reportStateForInteraction(providerState.getName(), provider, consumer, true) } } verifier.reportInteractionDescription(interaction) return verifier } } ``` ### An example of running provider verification with spock This example uses groovy and spock to run the provider verification. Again the provider service is a DropWizard application, and is using the DropwizardAppRule to startup the service. This example runs all interactions using spocks Unroll feature ```groovy class ReadmeExamplePactJVMProviderSpockSpec extends Specification { @ClassRule @Shared TestRule startServiceRule = new DropwizardAppRule<DropwizardConfiguration>(TestDropwizardApplication, ResourceHelpers.resourceFilePath('dropwizard/test-config.yaml')) @Shared ProviderInfo serviceProvider ProviderVerifier verifier def setupSpec() { serviceProvider = new ProviderInfo('Dropwizard App') serviceProvider.protocol = 'http' serviceProvider.host = 'localhost' serviceProvider.port = 8080 serviceProvider.path = '/' serviceProvider.hasPactWith('zoo_app') { consumer -> consumer.pactSource = new FileSource(new File(ResourceHelpers.resourceFilePath('pacts/zoo_app-animal_service.json'))) } } def setup() { verifier = new ProviderVerifier() } def cleanup() { // cleanup provider state // ie. db.truncateAllTables() } def cleanupSpec() { // cleanup provider } @Unroll def "Provider Pact - With Consumer #consumer"() { expect: !verifyConsumerPact(consumer).empty where: consumer << serviceProvider.consumers } private Map verifyConsumerPact(ConsumerInfo consumer) { Map failures = [:] verifier.initialiseReporters(serviceProvider) verifier.runVerificationForConsumer(failures, serviceProvider, consumer) if (!failures.empty) { verifier.displayFailures(failures) } failures } } ```

Pact provider ============= sub project of https://github.com/DiUS/pact-jvm The pact provider is responsible for verifying that an API provider adheres to a number of pacts authored by its clients This library provides the basic tools required to automate the process, and should be usable on its own in many instances. Framework and build tool specific bindings will be provided in separate libraries that build on top of this core functionality. ### Running Pacts Main takes 2 arguments: The first is the root folder of your pact files (all .json files in root and subfolders are assumed to be pacts) The second is the location of your pact config json file. ### Pact config The pact config is a simple mapping of provider names to endpoint url's paths will be appended to endpoint url's when interactions are attempted for an example see: https://github.com/DiUS/pact-jvm/blob/master/pact-jvm-provider/src/test/resources/pact-config.json ### Provider State Before each interaction is executed, the provider under test will have the opportunity to enter a state. Generally the state maps to a set of fixture data for mocking out services that the provider is a consumer of (they will have their own pacts) The pact framework will instruct the test server to enter that state by sending: POST "${config.stateChangeUrl.url}/setup" { "state" : "${interaction.stateName}" } ### An example of running provider verification with junit This example uses java, junit and hamcrest matchers to run the provider verification. As the provider service is a DropWizard application, it uses the DropwizardAppRule to startup the service before running any test. Warning: It only grabs the first interaction from the pact file with the consumer, where there could be many. (This could possibly be solved with a parameterized test) ```java public class PactJVMProviderJUnitTest { @ClassRule public static TestRule startServiceRule = new DropwizardAppRule<DropwizardAppConfig>(DropwizardApp.class, "config.yml"); private static ProviderInfo serviceProvider; private static Pact testConsumerPact; @BeforeClass public static void setupProvider() { serviceProvider = new ProviderInfo("Dropwizard App"); serviceProvider.setProtocol("http"); serviceProvider.setHost("localhost"); serviceProvider.setPort(8080); serviceProvider.setPath("/"); ConsumerInfo consumer = new ConsumerInfo(); consumer.setName("test_consumer"); consumer.setPactFile(new File("target/pacts/ping_client-ping_service.json")); // serviceProvider.getConsumers().add(consumer); testConsumerPact = (Pact) new PactReader().loadPact(consumer.getPactFile()); } @Test @SuppressWarnings("unchecked") public void runConsumerPacts() { //grab the first interaction from the pact with consumer List<Interaction> interactions = scala.collection.JavaConversions.seqAsJavaList(testConsumerPact.interactions()); Interaction interaction1 = interactions.get(0); //setup any provider state //setup the client and interaction to fire against the provider ProviderClient client = new ProviderClient(); client.setProvider(serviceProvider); client.setRequest(interaction1.request()); Map<String, Object> clientResponse = (Map<String, Object>) client.makeRequest(); Map<String, Object> result = (Map<String, Object>) ResponseComparison.compareResponse(interaction1.response(), clientResponse, (int) clientResponse.get("statusCode"), (Map) clientResponse.get("headers"), (String) clientResponse.get("data")); //assert all good assertThat(result.get("method"), is(true)); // method type matches Map headers = (Map) result.get("headers"); //headers match headers.forEach( (k, v) -> assertThat(format("Header: [%s] does not match", k), v, org.hamcrest.Matchers.equalTo(true)) ); assertThat((Collection<Object>)((Map)result.get("body")).values(), org.hamcrest.Matchers.hasSize(0)); // empty list of body mismatches } } ``` ### An example of running provider verification with spock This example uses groovy and spock to run the provider verification. Again the provider service is a DropWizard application, and is using the DropwizardAppRule to startup the service. This example runs all interactions using spocks Unroll feature ```groovy class PactJVMProviderSpockSpec extends Specification { @ClassRule @Shared TestRule startServiceRule = new DropwizardAppRule<DropwizardAppConfig>(DropwizardApp.class, "config.yml"); @Shared ProviderInfo serviceProvider @Shared Pact testConsumerPact def setupSpec() { serviceProvider = new ProviderInfo("Dropwizard App") serviceProvider.protocol = "http" serviceProvider.host = "localhost" serviceProvider.port = 8080; serviceProvider.path = "/" def consumer = serviceProvider.hasPactWith("ping_consumer", { pactFile = new File('target/pacts/ping_client-ping_service.json') }) testConsumerPact = (Pact) new PactReader().loadPact(consumer.getPactFile()); } def cleanup() { //cleanup provider state //ie. db.truncateAllTables() } def cleanupSpec() { //cleanup provider } @Unroll def "Provider Pact - With Consumer"() { given: //setup provider state // ie. db.setupRecords() // serviceProvider.requestFilter = { req -> // req.addHeader('Authorization', token) // } when: ProviderClient client = new ProviderClient(provider: serviceProvider, request: interaction.request()) Map clientResponse = (Map) client.makeRequest() Map result = (Map) ResponseComparison.compareResponse(interaction.response(), clientResponse, clientResponse.statusCode, clientResponse.headers, clientResponse.data) then: // method matches result.method == true // headers all match, spock needs the size checked before // asserting each result if (result.headers.size() > 0) { result.headers.each() { k, v -> assert v == true } } // empty list of body mismatches result.body.size() == 0 where: interaction << scala.collection.JavaConversions.seqAsJavaList(testConsumerPact.interactions()) } } ```

Pact provider ============= sub project of https://github.com/DiUS/pact-jvm The pact provider is responsible for verifying that an API provider adheres to a number of pacts authored by its clients This library provides the basic tools required to automate the process, and should be usable on its own in many instances. Framework and build tool specific bindings will be provided in separate libraries that build on top of this core functionality. ### Running Pacts Main takes 2 arguments: The first is the root folder of your pact files (all .json files in root and subfolders are assumed to be pacts) The second is the location of your pact config json file. ### Pact config The pact config is a simple mapping of provider names to endpoint url's paths will be appended to endpoint url's when interactions are attempted for an example see: https://github.com/DiUS/pact-jvm/blob/master/pact-jvm-provider/src/test/resources/pact-config.json ### Provider State Before each interaction is executed, the provider under test will have the opportunity to enter a state. Generally the state maps to a set of fixture data for mocking out services that the provider is a consumer of (they will have their own pacts) The pact framework will instruct the test server to enter that state by sending: POST "${config.stateChangeUrl.url}/setup" { "state" : "${interaction.stateName}" } ### An example of running provider verification with junit This example uses java, junit and hamcrest matchers to run the provider verification. As the provider service is a DropWizard application, it uses the DropwizardAppRule to startup the service before running any test. Warning: It only grabs the first interaction from the pact file with the consumer, where there could be many. (This could possibly be solved with a parameterized test) ```java public class PactJVMProviderJUnitTest { @ClassRule public static TestRule startServiceRule = new DropwizardAppRule<DropwizardAppConfig>(DropwizardApp.class, "config.yml"); private static ProviderInfo serviceProvider; private static Pact testConsumerPact; @BeforeClass public static void setupProvider() { serviceProvider = new ProviderInfo("Dropwizard App"); serviceProvider.setProtocol("http"); serviceProvider.setHost("localhost"); serviceProvider.setPort(8080); serviceProvider.setPath("/"); ConsumerInfo consumer = new ConsumerInfo(); consumer.setName("test_consumer"); consumer.setPactFile(new File("target/pacts/ping_client-ping_service.json")); // serviceProvider.getConsumers().add(consumer); testConsumerPact = (Pact) new PactReader().loadPact(consumer.getPactFile()); } @Test @SuppressWarnings("unchecked") public void runConsumerPacts() { //grab the first interaction from the pact with consumer List<Interaction> interactions = scala.collection.JavaConversions.seqAsJavaList(testConsumerPact.interactions()); Interaction interaction1 = interactions.get(0); //setup any provider state //setup the client and interaction to fire against the provider ProviderClient client = new ProviderClient(); client.setProvider(serviceProvider); client.setRequest(interaction1.request()); Map<String, Object> clientResponse = (Map<String, Object>) client.makeRequest(); Map<String, Object> result = (Map<String, Object>) ResponseComparison.compareResponse(interaction1.response(), clientResponse, (int) clientResponse.get("statusCode"), (Map) clientResponse.get("headers"), (String) clientResponse.get("data")); //assert all good assertThat(result.get("method"), is(true)); // method type matches Map headers = (Map) result.get("headers"); //headers match headers.forEach( (k, v) -> assertThat(format("Header: [%s] does not match", k), v, org.hamcrest.Matchers.equalTo(true)) ); assertThat((Collection<Object>)((Map)result.get("body")).values(), org.hamcrest.Matchers.hasSize(0)); // empty list of body mismatches } } ``` ### An example of running provider verification with spock This example uses groovy and spock to run the provider verification. Again the provider service is a DropWizard application, and is using the DropwizardAppRule to startup the service. This example runs all interactions using spocks Unroll feature ```groovy class PactJVMProviderSpockSpec extends Specification { @ClassRule @Shared TestRule startServiceRule = new DropwizardAppRule<DropwizardAppConfig>(DropwizardApp.class, "config.yml"); @Shared ProviderInfo serviceProvider @Shared Pact testConsumerPact def setupSpec() { serviceProvider = new ProviderInfo("Dropwizard App") serviceProvider.protocol = "http" serviceProvider.host = "localhost" serviceProvider.port = 8080; serviceProvider.path = "/" def consumer = serviceProvider.hasPactWith("ping_consumer", { pactFile = new File('target/pacts/ping_client-ping_service.json') }) testConsumerPact = (Pact) new PactReader().loadPact(consumer.getPactFile()); } def cleanup() { //cleanup provider state //ie. db.truncateAllTables() } def cleanupSpec() { //cleanup provider } @Unroll def "Provider Pact - With Consumer"() { given: //setup provider state // ie. db.setupRecords() // serviceProvider.requestFilter = { req -> // req.addHeader('Authorization', token) // } when: ProviderClient client = new ProviderClient(provider: serviceProvider, request: interaction.request()) Map clientResponse = (Map) client.makeRequest() Map result = (Map) ResponseComparison.compareResponse(interaction.response(), clientResponse, clientResponse.statusCode, clientResponse.headers, clientResponse.data) then: // method matches result.method == true // headers all match, spock needs the size checked before // asserting each result if (result.headers.size() > 0) { result.headers.each() { k, v -> assert v == true } } // empty list of body mismatches result.body.size() == 0 where: interaction << scala.collection.JavaConversions.seqAsJavaList(testConsumerPact.interactions()) } } ```

Pact consumer ============= Pact Consumer is used by projects that are consumers of an API. Most projects will want to use pact-consumer via one of the test framework specific projects. If your favourite framework is not implemented, this module should give you all the hooks you need. Provides a DSL for use with Java to build consumer pacts. ## Dependency The library is available on maven central using: * group-id = `au.com.dius` * artifact-id = `pact-jvm-consumer_2.11` ## DSL Usage Example in a JUnit test: ```java import au.com.dius.pact.model.MockProviderConfig; import au.com.dius.pact.model.PactFragment; import org.junit.Test; import java.io.IOException; import java.util.HashMap; import java.util.Map; import static org.junit.Assert.assertEquals; public class PactTest { @Test public void testPact() { PactFragment pactFragment = ConsumerPactBuilder .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .uponReceiving(&quot;a request to say Hello&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .toFragment(); MockProviderConfig config = MockProviderConfig.createDefault(); VerificationResult result = pactFragment.runConsumer(config, new TestRun() { @Override public void run(MockProviderConfig config) { Map expectedResponse = new HashMap(); expectedResponse.put(&quot;hello&quot;, &quot;harry&quot;); try { assertEquals(new ProviderClient(config.url()).hello(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;), expectedResponse); } catch (IOException e) {} } }); if (result instanceof PactError) { throw new RuntimeException(((PactError)result).error()); } assertEquals(ConsumerPactTest.PACT_VERIFIED, result); } } ``` The DSL has the following pattern: ```java .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .given(&quot;a certain state on the provider&quot;) .uponReceiving(&quot;a request for something&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .uponReceiving(&quot;another request for something&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) . . . .toFragment() ``` You can define as many interactions as required. Each interaction starts with `uponReceiving` followed by `willRespondWith`. The test state setup with `given` is a mechanism to describe what the state of the provider should be in before the provider is verified. It is only recorded in the consumer tests and used by the provider verification tasks. ### Building JSON bodies with PactDslJsonBody DSL The body method of the ConsumerPactBuilder can accept a PactDslJsonBody, which can construct a JSON body as well as define regex and type matchers. For example: ```java PactDslJsonBody body = new PactDslJsonBody() .stringType(&quot;name&quot;) .booleanType(&quot;happy&quot;) .hexValue(&quot;hexCode&quot;) .id() .ipAddress(&quot;localAddress&quot;) .numberValue(&quot;age&quot;, 100) .timestamp(); ``` #### DSL Matching methods The following matching methods are provided with the DSL. In most cases, they take an optional value parameter which will be used to generate example values (i.e. when returning a mock response). If no example value is given, a random one will be generated. | method | description | |--------|-------------| | string, stringValue | Match a string value (using string equality) | | number, numberValue | Match a number value (using Number.equals)\* | | booleanValue | Match a boolean value (using equality) | | stringType | Will match all Strings | | numberType | Will match all numbers\* | | integerType | Will match all numbers that are integers (both ints and longs)\* | | decimalType | Will match all real numbers (floating point and decimal)\* | | booleanType | Will match all boolean values (true and false) | | stringMatcher | Will match strings using the provided regular expression | | timestamp | Will match string containing timestamps. If a timestamp format is not given, will match an ISO timestamp format | | date | Will match string containing dates. If a date format is not given, will match an ISO date format | | time | Will match string containing times. If a time format is not given, will match an ISO time format | | ipAddress | Will match string containing IP4 formatted address. | | id | Will match all numbers by type | | hexValue | Will match all hexadecimal encoded strings | | uuid | Will match strings containing UUIDs | _\* Note:_ JSON only supports double precision floating point values. Depending on the language implementation, they may parsed as integer, floating point or decimal numbers. #### Ensuring all items in a list match an example (2.2.0+) Lots of the time you might not know the number of items that will be in a list, but you want to ensure that the list has a minimum or maximum size and that each item in the list matches a given example. You can do this with the `arrayLike`, `minArrayLike` and `maxArrayLike` functions. | function | description | |----------|-------------| | `eachLike` | Ensure that each item in the list matches the provided example | | `maxArrayLike` | Ensure that each item in the list matches the provided example and the list is no bigger than the provided max | | `minArrayLike` | Ensure that each item in the list matches the provided example and the list is no smaller than the provided min | For example: ```java DslPart body = new PactDslJsonBody() .minArrayLike(&quot;users&quot;) .id() .stringType(&quot;name&quot;) .closeObject() .closeArray(); ``` This will ensure that the users list is never empty and that each user has an identifier that is a number and a name that is a string. #### Matching JSON values at the root (Version 3.2.2/2.4.3+) For cases where you are expecting basic JSON values (strings, numbers, booleans and null) at the root level of the body and need to use matchers, you can use the `PactDslJsonRootValue` class. It has all the DSL matching methods for basic values that you can use. For example: ```java .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .uponReceiving(&quot;a request for a basic JSON value&quot;) .path(&quot;/hello&quot;) .willRespondWith() .status(200) .body(PactDslJsonRootValue.integerType()) ``` #### Root level arrays that match all items (version 2.2.11+) If the root of the body is an array, you can create PactDslJsonArray classes with the following methods: | function | description | |----------|-------------| | `arrayEachLike` | Ensure that each item in the list matches the provided example | | `arrayMinLike` | Ensure that each item in the list matches the provided example and the list is no bigger than the provided max | | `arrayMaxLike` | Ensure that each item in the list matches the provided example and the list is no smaller than the provided min | For example: ```java PactDslJsonArray.arrayEachLike() .date(&quot;clearedDate&quot;, &quot;mm/dd/yyyy&quot;, date) .stringType(&quot;status&quot;, &quot;STATUS&quot;) .decimalType(&quot;amount&quot;, 100.0) .closeObject() ``` This will then match a body like: ```json [ { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 }, { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 }, { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 } ] ``` #### Matching arrays of arrays (version 3.2.12/2.4.14+) For the case where you have arrays of arrays (GeoJSON is an example), the following methods have been provided: | function | description | |----------|-------------| | `eachArrayLike` | Ensure that each item in the array is an array that matches the provided example | | `eachArrayWithMaxLike` | Ensure that each item in the array is an array that matches the provided example and the array is no bigger than the provided max | | `eachArrayWithMinLike` | Ensure that each item in the array is an array that matches the provided example and the array is no smaller than the provided min | For example (with GeoJSON structure): ```java new PactDslJsonBody() .stringType(&quot;type&quot;,&quot;FeatureCollection&quot;) .eachLike(&quot;features&quot;) .stringType(&quot;type&quot;,&quot;Feature&quot;) .object(&quot;geometry&quot;) .stringType(&quot;type&quot;,&quot;Point&quot;) .eachArrayLike(&quot;coordinates&quot;) // coordinates is an array of arrays .decimalType(-7.55717) .decimalType(49.766896) .closeArray() .closeArray() .closeObject() .object(&quot;properties&quot;) .stringType(&quot;prop0&quot;,&quot;value0&quot;) .closeObject() .closeObject() .closeArray() ``` This generated the following JSON: ```json { &quot;features&quot;: [ { &quot;geometry&quot;: { &quot;coordinates&quot;: [[-7.55717, 49.766896]], &quot;type&quot;: &quot;Point&quot; }, &quot;type&quot;: &quot;Feature&quot;, &quot;properties&quot;: { &quot;prop0&quot;: &quot;value0&quot; } } ], &quot;type&quot;: &quot;FeatureCollection&quot; } ``` and will be able to match all coordinates regardless of the number of coordinates. #### Matching any key in a map (3.3.1/2.5.0+) The DSL has been extended for cases where the keys in a map are IDs. For an example of this, see [#313](https://github.com/DiUS/pact-jvm/issues/131). In this case you can use the `eachKeyLike` method, which takes an example key as a parameter. For example: ```java DslPart body = new PactDslJsonBody() .object(&quot;one&quot;) .eachKeyLike(&quot;001&quot;, PactDslJsonRootValue.id(12345L)) // key like an id mapped to a matcher .closeObject() .object(&quot;two&quot;) .eachKeyLike(&quot;001-A&quot;) // key like an id where the value is matched by the following example .stringType(&quot;description&quot;, &quot;Some Description&quot;) .closeObject() .closeObject() .object(&quot;three&quot;) .eachKeyMappedToAnArrayLike(&quot;001&quot;) // key like an id mapped to an array where each item is matched by the following example .id(&quot;someId&quot;, 23456L) .closeObject() .closeArray() .closeObject(); ``` For an example, have a look at [WildcardKeysTest](src/test/java/au/com/dius/pact/consumer/WildcardKeysTest.java). **NOTE:** The `eachKeyLike` method adds a `*` to the matching path, so the matching definition will be applied to all keys of the map if there is not a more specific matcher defined for a particular key. Having more than one `eachKeyLike` condition applied to a map will result in only one being applied when the pact is verified (probably the last). ### Matching on paths (version 2.1.5+) You can use regular expressions to match incoming requests. The DSL has a `matchPath` method for this. You can provide a real path as a second value to use when generating requests, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .matchPath(&quot;/transaction/[0-9]+&quot;) // or .matchPath(&quot;/transaction/[0-9]+&quot;, &quot;/transaction/1234567890&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) ``` ### Matching on headers (version 2.2.2+) You can use regular expressions to match request and response headers. The DSL has a `matchHeader` method for this. You can provide an example header value to use when generating requests and responses, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .matchHeader(&quot;testreqheader&quot;, &quot;test.*value&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .matchHeader(&quot;Location&quot;, &quot;.*/hello/[0-9]+&quot;, &quot;/hello/1234&quot;) ``` ### Matching on query parameters (version 3.3.7+) You can use regular expressions to match request query parameters. The DSL has a `matchQuery` method for this. You can provide an example value to use when generating requests, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .matchQuery(&quot;a&quot;, &quot;\\d+&quot;, &quot;100&quot;) .matchQuery(&quot;b&quot;, &quot;[A-Z]&quot;, &quot;X&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) ```

Pact consumer ============= Pact Consumer is used by projects that are consumers of an API. Most projects will want to use pact-consumer via one of the test framework specific projects. If your favourite framework is not implemented, this module should give you all the hooks you need. Provides a DSL for use with Java to build consumer pacts. ## Dependency The library is available on maven central using: * group-id = `au.com.dius` * artifact-id = `pact-jvm-consumer_2.11` ## DSL Usage Example in a JUnit test: ```java import au.com.dius.pact.model.MockProviderConfig; import au.com.dius.pact.model.RequestResponsePact; import org.apache.http.entity.ContentType; import org.jetbrains.annotations.NotNull; import org.junit.Test; import java.io.IOException; import java.util.HashMap; import java.util.Map; import static au.com.dius.pact.consumer.ConsumerPactRunnerKt.runConsumerTest; import static org.junit.Assert.assertEquals; public class PactTest { @Test public void testPact() { RequestResponsePact pact = ConsumerPactBuilder .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .uponReceiving(&quot;a request to say Hello&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .toPact(); MockProviderConfig config = MockProviderConfig.createDefault(); PactVerificationResult result = runConsumerTest(pact, config, new PactTestRun() { @Override public void run(@NotNull MockServer mockServer) throws IOException { Map expectedResponse = new HashMap(); expectedResponse.put(&quot;hello&quot;, &quot;harry&quot;); assertEquals(expectedResponse, new ConsumerClient(mockServer.getUrl()).post(&quot;/hello&quot;, &quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;, ContentType.APPLICATION_JSON)); } }); if (result instanceof PactVerificationResult.Error) { throw new RuntimeException(((PactVerificationResult.Error)result).getError()); } assertEquals(PactVerificationResult.Ok.INSTANCE, result); } } ``` The DSL has the following pattern: ```java .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .given(&quot;a certain state on the provider&quot;) .uponReceiving(&quot;a request for something&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .uponReceiving(&quot;another request for something&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) . . . .toPact() ``` You can define as many interactions as required. Each interaction starts with `uponReceiving` followed by `willRespondWith`. The test state setup with `given` is a mechanism to describe what the state of the provider should be in before the provider is verified. It is only recorded in the consumer tests and used by the provider verification tasks. ### Building JSON bodies with PactDslJsonBody DSL The body method of the ConsumerPactBuilder can accept a PactDslJsonBody, which can construct a JSON body as well as define regex and type matchers. For example: ```java PactDslJsonBody body = new PactDslJsonBody() .stringType(&quot;name&quot;) .booleanType(&quot;happy&quot;) .hexValue(&quot;hexCode&quot;) .id() .ipAddress(&quot;localAddress&quot;) .numberValue(&quot;age&quot;, 100) .timestamp(); ``` #### DSL Matching methods The following matching methods are provided with the DSL. In most cases, they take an optional value parameter which will be used to generate example values (i.e. when returning a mock response). If no example value is given, a random one will be generated. | method | description | |--------|-------------| | string, stringValue | Match a string value (using string equality) | | number, numberValue | Match a number value (using Number.equals)\* | | booleanValue | Match a boolean value (using equality) | | stringType | Will match all Strings | | numberType | Will match all numbers\* | | integerType | Will match all numbers that are integers (both ints and longs)\* | | decimalType | Will match all real numbers (floating point and decimal)\* | | booleanType | Will match all boolean values (true and false) | | stringMatcher | Will match strings using the provided regular expression | | timestamp | Will match string containing timestamps. If a timestamp format is not given, will match an ISO timestamp format | | date | Will match string containing dates. If a date format is not given, will match an ISO date format | | time | Will match string containing times. If a time format is not given, will match an ISO time format | | ipAddress | Will match string containing IP4 formatted address. | | id | Will match all numbers by type | | hexValue | Will match all hexadecimal encoded strings | | uuid | Will match strings containing UUIDs | | includesStr | Will match strings containing the provided string | | equalsTo | Will match using equals | | matchUrl | Defines a matcher for URLs, given the base URL path and a sequence of path fragments. The path fragments could be strings or regular expression matchers | _\* Note:_ JSON only supports double precision floating point values. Depending on the language implementation, they may parsed as integer, floating point or decimal numbers. #### Ensuring all items in a list match an example (2.2.0+) Lots of the time you might not know the number of items that will be in a list, but you want to ensure that the list has a minimum or maximum size and that each item in the list matches a given example. You can do this with the `arrayLike`, `minArrayLike` and `maxArrayLike` functions. | function | description | |----------|-------------| | `eachLike` | Ensure that each item in the list matches the provided example | | `maxArrayLike` | Ensure that each item in the list matches the provided example and the list is no bigger than the provided max | | `minArrayLike` | Ensure that each item in the list matches the provided example and the list is no smaller than the provided min | For example: ```java DslPart body = new PactDslJsonBody() .minArrayLike(&quot;users&quot;) .id() .stringType(&quot;name&quot;) .closeObject() .closeArray(); ``` This will ensure that the users list is never empty and that each user has an identifier that is a number and a name that is a string. #### Matching JSON values at the root (Version 3.2.2/2.4.3+) For cases where you are expecting basic JSON values (strings, numbers, booleans and null) at the root level of the body and need to use matchers, you can use the `PactDslJsonRootValue` class. It has all the DSL matching methods for basic values that you can use. For example: ```java .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .uponReceiving(&quot;a request for a basic JSON value&quot;) .path(&quot;/hello&quot;) .willRespondWith() .status(200) .body(PactDslJsonRootValue.integerType()) ``` #### Root level arrays that match all items (version 2.2.11+) If the root of the body is an array, you can create PactDslJsonArray classes with the following methods: | function | description | |----------|-------------| | `arrayEachLike` | Ensure that each item in the list matches the provided example | | `arrayMinLike` | Ensure that each item in the list matches the provided example and the list is no bigger than the provided max | | `arrayMaxLike` | Ensure that each item in the list matches the provided example and the list is no smaller than the provided min | For example: ```java PactDslJsonArray.arrayEachLike() .date(&quot;clearedDate&quot;, &quot;mm/dd/yyyy&quot;, date) .stringType(&quot;status&quot;, &quot;STATUS&quot;) .decimalType(&quot;amount&quot;, 100.0) .closeObject() ``` This will then match a body like: ```json [ { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 }, { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 }, { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 } ] ``` #### Matching arrays of arrays (version 3.2.12/2.4.14+) For the case where you have arrays of arrays (GeoJSON is an example), the following methods have been provided: | function | description | |----------|-------------| | `eachArrayLike` | Ensure that each item in the array is an array that matches the provided example | | `eachArrayWithMaxLike` | Ensure that each item in the array is an array that matches the provided example and the array is no bigger than the provided max | | `eachArrayWithMinLike` | Ensure that each item in the array is an array that matches the provided example and the array is no smaller than the provided min | For example (with GeoJSON structure): ```java new PactDslJsonBody() .stringType(&quot;type&quot;,&quot;FeatureCollection&quot;) .eachLike(&quot;features&quot;) .stringType(&quot;type&quot;,&quot;Feature&quot;) .object(&quot;geometry&quot;) .stringType(&quot;type&quot;,&quot;Point&quot;) .eachArrayLike(&quot;coordinates&quot;) // coordinates is an array of arrays .decimalType(-7.55717) .decimalType(49.766896) .closeArray() .closeArray() .closeObject() .object(&quot;properties&quot;) .stringType(&quot;prop0&quot;,&quot;value0&quot;) .closeObject() .closeObject() .closeArray() ``` This generated the following JSON: ```json { &quot;features&quot;: [ { &quot;geometry&quot;: { &quot;coordinates&quot;: [[-7.55717, 49.766896]], &quot;type&quot;: &quot;Point&quot; }, &quot;type&quot;: &quot;Feature&quot;, &quot;properties&quot;: { &quot;prop0&quot;: &quot;value0&quot; } } ], &quot;type&quot;: &quot;FeatureCollection&quot; } ``` and will be able to match all coordinates regardless of the number of coordinates. #### Matching any key in a map (3.3.1/2.5.0+) The DSL has been extended for cases where the keys in a map are IDs. For an example of this, see [#313](https://github.com/DiUS/pact-jvm/issues/313). In this case you can use the `eachKeyLike` method, which takes an example key as a parameter. For example: ```java DslPart body = new PactDslJsonBody() .object(&quot;one&quot;) .eachKeyLike(&quot;001&quot;, PactDslJsonRootValue.id(12345L)) // key like an id mapped to a matcher .closeObject() .object(&quot;two&quot;) .eachKeyLike(&quot;001-A&quot;) // key like an id where the value is matched by the following example .stringType(&quot;description&quot;, &quot;Some Description&quot;) .closeObject() .closeObject() .object(&quot;three&quot;) .eachKeyMappedToAnArrayLike(&quot;001&quot;) // key like an id mapped to an array where each item is matched by the following example .id(&quot;someId&quot;, 23456L) .closeObject() .closeArray() .closeObject(); ``` For an example, have a look at [WildcardKeysTest](../pact-jvm-consumer-junit/src/test/java/au/com/dius/pact/consumer/WildcardKeysTest.java). **NOTE:** The `eachKeyLike` method adds a `*` to the matching path, so the matching definition will be applied to all keys of the map if there is not a more specific matcher defined for a particular key. Having more than one `eachKeyLike` condition applied to a map will result in only one being applied when the pact is verified (probably the last). **Further Note: From version 3.5.22 onwards pacts with wildcards applied to map keys will require the Java system property &quot;pact.matching.wildcard&quot; set to value &quot;true&quot; when the pact file is verified.** ### Matching on paths (version 2.1.5+) You can use regular expressions to match incoming requests. The DSL has a `matchPath` method for this. You can provide a real path as a second value to use when generating requests, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .matchPath(&quot;/transaction/[0-9]+&quot;) // or .matchPath(&quot;/transaction/[0-9]+&quot;, &quot;/transaction/1234567890&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) ``` ### Matching on headers (version 2.2.2+) You can use regular expressions to match request and response headers. The DSL has a `matchHeader` method for this. You can provide an example header value to use when generating requests and responses, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .matchHeader(&quot;testreqheader&quot;, &quot;test.*value&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .matchHeader(&quot;Location&quot;, &quot;.*/hello/[0-9]+&quot;, &quot;/hello/1234&quot;) ``` ### Matching on query parameters (version 3.3.7+) You can use regular expressions to match request query parameters. The DSL has a `matchQuery` method for this. You can provide an example value to use when generating requests, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .matchQuery(&quot;a&quot;, &quot;\\d+&quot;, &quot;100&quot;) .matchQuery(&quot;b&quot;, &quot;[A-Z]&quot;, &quot;X&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) ``` # Forcing pact files to be overwritten (3.6.5+) By default, when the pact file is written, it will be merged with any existing pact file. To force the file to be overwritten, set the Java system property `pact.writer.overwrite` to `true`. # Having values injected from provider state callbacks (3.6.11+) You can have values from the provider state callbacks be injected into most places (paths, query parameters, headers, bodies, etc.). This works by using the V3 spec generators with provider state callbacks that return values. One example of where this would be useful is API calls that require an ID which would be auto-generated by the database on the provider side, so there is no way to know what the ID would be beforehand. The following DSL methods allow you to set an expression that will be parsed with the values returned from the provider states: For JSON bodies, use `valueFromProviderState`.&lt;br/&gt; For headers, use `headerFromProviderState`.&lt;br/&gt; For query parameters, use `queryParameterFromProviderState`.&lt;br/&gt; For paths, use `pathFromProviderState`. For example, assume that an API call is made to get the details of a user by ID. A provider state can be defined that specifies that the user must be exist, but the ID will be created when the user is created. So we can then define an expression for the path where the ID will be replaced with the value returned from the provider state callback. ```java .pathFromProviderState(&quot;/api/users/${id}&quot;, &quot;/api/users/100&quot;) ``` You can also just use the key instead of an expression: ```java .valueFromProviderState(&apos;userId&apos;, &apos;userId&apos;, 100) // will look value using userId as the key ```

Pact consumer ============= Pact Consumer is used by projects that are consumers of an API. Most projects will want to use pact-consumer via one of the test framework specific projects. If your favourite framework is not implemented, this module should give you all the hooks you need. Provides a DSL for use with Java to build consumer pacts. ## Dependency The library is available on maven central using: * group-id = `au.com.dius` * artifact-id = `pact-jvm-consumer` ## DSL Usage Example in a JUnit test: ```java import au.com.dius.pact.model.MockProviderConfig; import au.com.dius.pact.model.RequestResponsePact; import org.apache.http.entity.ContentType; import org.jetbrains.annotations.NotNull; import org.junit.Test; import java.io.IOException; import java.util.HashMap; import java.util.Map; import static au.com.dius.pact.consumer.ConsumerPactRunnerKt.runConsumerTest; import static org.junit.Assert.assertEquals; public class PactTest { @Test public void testPact() { RequestResponsePact pact = ConsumerPactBuilder .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .uponReceiving(&quot;a request to say Hello&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .toPact(); MockProviderConfig config = MockProviderConfig.createDefault(); PactVerificationResult result = runConsumerTest(pact, config, new PactTestRun() { @Override public void run(@NotNull MockServer mockServer) throws IOException { Map expectedResponse = new HashMap(); expectedResponse.put(&quot;hello&quot;, &quot;harry&quot;); assertEquals(expectedResponse, new ConsumerClient(mockServer.getUrl()).post(&quot;/hello&quot;, &quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;, ContentType.APPLICATION_JSON)); } }); if (result instanceof PactVerificationResult.Error) { throw new RuntimeException(((PactVerificationResult.Error)result).getError()); } assertEquals(PactVerificationResult.Ok.INSTANCE, result); } } ``` The DSL has the following pattern: ```java .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .given(&quot;a certain state on the provider&quot;) .uponReceiving(&quot;a request for something&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .uponReceiving(&quot;another request for something&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) . . . .toPact() ``` You can define as many interactions as required. Each interaction starts with `uponReceiving` followed by `willRespondWith`. The test state setup with `given` is a mechanism to describe what the state of the provider should be in before the provider is verified. It is only recorded in the consumer tests and used by the provider verification tasks. ### Building JSON bodies with PactDslJsonBody DSL The body method of the ConsumerPactBuilder can accept a PactDslJsonBody, which can construct a JSON body as well as define regex and type matchers. For example: ```java PactDslJsonBody body = new PactDslJsonBody() .stringType(&quot;name&quot;) .booleanType(&quot;happy&quot;) .hexValue(&quot;hexCode&quot;) .id() .ipAddress(&quot;localAddress&quot;) .numberValue(&quot;age&quot;, 100) .timestamp(); ``` #### DSL Matching methods The following matching methods are provided with the DSL. In most cases, they take an optional value parameter which will be used to generate example values (i.e. when returning a mock response). If no example value is given, a random one will be generated. | method | description | |--------|-------------| | string, stringValue | Match a string value (using string equality) | | number, numberValue | Match a number value (using Number.equals)\* | | booleanValue | Match a boolean value (using equality) | | stringType | Will match all Strings | | numberType | Will match all numbers\* | | integerType | Will match all numbers that are integers (both ints and longs)\* | | decimalType | Will match all real numbers (floating point and decimal)\* | | booleanType | Will match all boolean values (true and false) | | stringMatcher | Will match strings using the provided regular expression | | timestamp | Will match string containing timestamps. If a timestamp format is not given, will match an ISO timestamp format | | date | Will match string containing dates. If a date format is not given, will match an ISO date format | | time | Will match string containing times. If a time format is not given, will match an ISO time format | | ipAddress | Will match string containing IP4 formatted address. | | id | Will match all numbers by type | | hexValue | Will match all hexadecimal encoded strings | | uuid | Will match strings containing UUIDs | | includesStr | Will match strings containing the provided string | | equalsTo | Will match using equals | | matchUrl | Defines a matcher for URLs, given the base URL path and a sequence of path fragments. The path fragments could be strings or regular expression matchers | _\* Note:_ JSON only supports double precision floating point values. Depending on the language implementation, they may parsed as integer, floating point or decimal numbers. #### Ensuring all items in a list match an example (2.2.0+) Lots of the time you might not know the number of items that will be in a list, but you want to ensure that the list has a minimum or maximum size and that each item in the list matches a given example. You can do this with the `arrayLike`, `minArrayLike` and `maxArrayLike` functions. | function | description | |----------|-------------| | `eachLike` | Ensure that each item in the list matches the provided example | | `maxArrayLike` | Ensure that each item in the list matches the provided example and the list is no bigger than the provided max | | `minArrayLike` | Ensure that each item in the list matches the provided example and the list is no smaller than the provided min | For example: ```java DslPart body = new PactDslJsonBody() .minArrayLike(&quot;users&quot;) .id() .stringType(&quot;name&quot;) .closeObject() .closeArray(); ``` This will ensure that the users list is never empty and that each user has an identifier that is a number and a name that is a string. #### Matching JSON values at the root For cases where you are expecting basic JSON values (strings, numbers, booleans and null) at the root level of the body and need to use matchers, you can use the `PactDslJsonRootValue` class. It has all the DSL matching methods for basic values that you can use. For example: ```java .consumer(&quot;Some Consumer&quot;) .hasPactWith(&quot;Some Provider&quot;) .uponReceiving(&quot;a request for a basic JSON value&quot;) .path(&quot;/hello&quot;) .willRespondWith() .status(200) .body(PactDslJsonRootValue.integerType()) ``` #### Root level arrays that match all items If the root of the body is an array, you can create PactDslJsonArray classes with the following methods: | function | description | |----------|-------------| | `arrayEachLike` | Ensure that each item in the list matches the provided example | | `arrayMinLike` | Ensure that each item in the list matches the provided example and the list is no bigger than the provided max | | `arrayMaxLike` | Ensure that each item in the list matches the provided example and the list is no smaller than the provided min | For example: ```java PactDslJsonArray.arrayEachLike() .date(&quot;clearedDate&quot;, &quot;mm/dd/yyyy&quot;, date) .stringType(&quot;status&quot;, &quot;STATUS&quot;) .decimalType(&quot;amount&quot;, 100.0) .closeObject() ``` This will then match a body like: ```json [ { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 }, { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 }, { &quot;clearedDate&quot; : &quot;07/22/2015&quot;, &quot;status&quot; : &quot;C&quot;, &quot;amount&quot; : 15.0 } ] ``` #### Matching arrays of arrays For the case where you have arrays of arrays (GeoJSON is an example), the following methods have been provided: | function | description | |----------|-------------| | `eachArrayLike` | Ensure that each item in the array is an array that matches the provided example | | `eachArrayWithMaxLike` | Ensure that each item in the array is an array that matches the provided example and the array is no bigger than the provided max | | `eachArrayWithMinLike` | Ensure that each item in the array is an array that matches the provided example and the array is no smaller than the provided min | For example (with GeoJSON structure): ```java new PactDslJsonBody() .stringType(&quot;type&quot;,&quot;FeatureCollection&quot;) .eachLike(&quot;features&quot;) .stringType(&quot;type&quot;,&quot;Feature&quot;) .object(&quot;geometry&quot;) .stringType(&quot;type&quot;,&quot;Point&quot;) .eachArrayLike(&quot;coordinates&quot;) // coordinates is an array of arrays .decimalType(-7.55717) .decimalType(49.766896) .closeArray() .closeArray() .closeObject() .object(&quot;properties&quot;) .stringType(&quot;prop0&quot;,&quot;value0&quot;) .closeObject() .closeObject() .closeArray() ``` This generated the following JSON: ```json { &quot;features&quot;: [ { &quot;geometry&quot;: { &quot;coordinates&quot;: [[-7.55717, 49.766896]], &quot;type&quot;: &quot;Point&quot; }, &quot;type&quot;: &quot;Feature&quot;, &quot;properties&quot;: { &quot;prop0&quot;: &quot;value0&quot; } } ], &quot;type&quot;: &quot;FeatureCollection&quot; } ``` and will be able to match all coordinates regardless of the number of coordinates. #### Matching any key in a map The DSL has been extended for cases where the keys in a map are IDs. For an example of this, see [#313](https://github.com/DiUS/pact-jvm/issues/313). In this case you can use the `eachKeyLike` method, which takes an example key as a parameter. For example: ```java DslPart body = new PactDslJsonBody() .object(&quot;one&quot;) .eachKeyLike(&quot;001&quot;, PactDslJsonRootValue.id(12345L)) // key like an id mapped to a matcher .closeObject() .object(&quot;two&quot;) .eachKeyLike(&quot;001-A&quot;) // key like an id where the value is matched by the following example .stringType(&quot;description&quot;, &quot;Some Description&quot;) .closeObject() .closeObject() .object(&quot;three&quot;) .eachKeyMappedToAnArrayLike(&quot;001&quot;) // key like an id mapped to an array where each item is matched by the following example .id(&quot;someId&quot;, 23456L) .closeObject() .closeArray() .closeObject(); ``` For an example, have a look at [WildcardKeysTest](../pact-jvm-consumer-junit/src/test/java/au/com/dius/pact/consumer/WildcardKeysTest.java). **NOTE:** The `eachKeyLike` method adds a `*` to the matching path, so the matching definition will be applied to all keys of the map if there is not a more specific matcher defined for a particular key. Having more than one `eachKeyLike` condition applied to a map will result in only one being applied when the pact is verified (probably the last). **Further Note: From version 3.5.22 onwards pacts with wildcards applied to map keys will require the Java system property &quot;pact.matching.wildcard&quot; set to value &quot;true&quot; when the pact file is verified.** ### Matching on paths You can use regular expressions to match incoming requests. The DSL has a `matchPath` method for this. You can provide a real path as a second value to use when generating requests, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .matchPath(&quot;/transaction/[0-9]+&quot;) // or .matchPath(&quot;/transaction/[0-9]+&quot;, &quot;/transaction/1234567890&quot;) .method(&quot;POST&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) ``` ### Matching on headers You can use regular expressions to match request and response headers. The DSL has a `matchHeader` method for this. You can provide an example header value to use when generating requests and responses, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .matchHeader(&quot;testreqheader&quot;, &quot;test.*value&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) .matchHeader(&quot;Location&quot;, &quot;.*/hello/[0-9]+&quot;, &quot;/hello/1234&quot;) ``` ### Matching on query parameters You can use regular expressions to match request query parameters. The DSL has a `matchQuery` method for this. You can provide an example value to use when generating requests, and if you leave it out it will generate a random one from the regular expression. For example: ```java .given(&quot;test state&quot;) .uponReceiving(&quot;a test interaction&quot;) .path(&quot;/hello&quot;) .method(&quot;POST&quot;) .matchQuery(&quot;a&quot;, &quot;\\d+&quot;, &quot;100&quot;) .matchQuery(&quot;b&quot;, &quot;[A-Z]&quot;, &quot;X&quot;) .body(&quot;{\&quot;name\&quot;: \&quot;harry\&quot;}&quot;) .willRespondWith() .status(200) .body(&quot;{\&quot;hello\&quot;: \&quot;harry\&quot;}&quot;) ``` # Forcing pact files to be overwritten (3.6.5+) By default, when the pact file is written, it will be merged with any existing pact file. To force the file to be overwritten, set the Java system property `pact.writer.overwrite` to `true`. # Having values injected from provider state callbacks (3.6.11+) You can have values from the provider state callbacks be injected into most places (paths, query parameters, headers, bodies, etc.). This works by using the V3 spec generators with provider state callbacks that return values. One example of where this would be useful is API calls that require an ID which would be auto-generated by the database on the provider side, so there is no way to know what the ID would be beforehand. The following DSL methods allow you to set an expression that will be parsed with the values returned from the provider states: For JSON bodies, use `valueFromProviderState`.&lt;br/&gt; For headers, use `headerFromProviderState`.&lt;br/&gt; For query parameters, use `queryParameterFromProviderState`.&lt;br/&gt; For paths, use `pathFromProviderState`. For example, assume that an API call is made to get the details of a user by ID. A provider state can be defined that specifies that the user must be exist, but the ID will be created when the user is created. So we can then define an expression for the path where the ID will be replaced with the value returned from the provider state callback. ```java .pathFromProviderState(&quot;/api/users/${id}&quot;, &quot;/api/users/100&quot;) ```

Pact consumer ============= Pact Consumer is used by projects that are consumers of an API. Most projects will want to use pact-consumer via one of the test framework specific projects above. If your favourite framework is not implemented, this module should give you all the hooks you need. Please let us know if you build one and we'll link to you from the main page.