org.apache.camel.test.junit4.TestSupport Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.test.junit4;
import java.io.File;
import java.util.Collection;
import java.util.List;
import java.util.Locale;
import org.apache.camel.CamelContext;
import org.apache.camel.Channel;
import org.apache.camel.Endpoint;
import org.apache.camel.Exchange;
import org.apache.camel.Expression;
import org.apache.camel.InvalidPayloadException;
import org.apache.camel.Message;
import org.apache.camel.Predicate;
import org.apache.camel.Processor;
import org.apache.camel.Route;
import org.apache.camel.builder.Builder;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.builder.ValueBuilder;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.impl.DefaultExchange;
import org.apache.camel.processor.DelegateProcessor;
import org.apache.camel.util.PredicateAssertHelper;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.rules.TestName;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A bunch of useful testing methods
*
* @version
*/
public abstract class TestSupport extends Assert {
protected static final String LS = System.getProperty("line.separator");
private static final Logger LOG = LoggerFactory.getLogger(TestSupport.class);
protected transient Logger log = LoggerFactory.getLogger(getClass());
// CHECKSTYLE:OFF
@Rule
public TestName testName = new TestName();
// CHECKSTYLE:ON
// Builder methods for expressions used when testing
// -------------------------------------------------------------------------
/**
* Returns a value builder for the given header
*/
public static ValueBuilder header(String name) {
return Builder.header(name);
}
/**
* Returns a value builder for the given property
*/
public static ValueBuilder property(String name) {
return Builder.property(name);
}
/**
* Returns a predicate and value builder for the inbound body on an exchange
*/
public static ValueBuilder body() {
return Builder.body();
}
/**
* Returns a predicate and value builder for the inbound message body as a
* specific type
*/
public static ValueBuilder bodyAs(Class type) {
return Builder.bodyAs(type);
}
/**
* Returns a predicate and value builder for the outbound body on an
* exchange
*/
public static ValueBuilder outBody() {
return Builder.outBody();
}
/**
* Returns a predicate and value builder for the outbound message body as a
* specific type
*/
public static ValueBuilder outBodyAs(Class type) {
return Builder.outBodyAs(type);
}
/**
* Returns a predicate and value builder for the fault body on an
* exchange
*/
public static ValueBuilder faultBody() {
return Builder.faultBody();
}
/**
* Returns a predicate and value builder for the fault message body as a
* specific type
*/
public static ValueBuilder faultBodyAs(Class type) {
return Builder.faultBodyAs(type);
}
/**
* Returns a value builder for the given system property
*/
public static ValueBuilder systemProperty(String name) {
return Builder.systemProperty(name);
}
/**
* Returns a value builder for the given system property
*/
public static ValueBuilder systemProperty(String name, String defaultValue) {
return Builder.systemProperty(name, defaultValue);
}
// Assertions
// -----------------------------------------------------------------------
public static T assertIsInstanceOf(Class expectedType, Object value) {
assertNotNull("Expected an instance of type: " + expectedType.getName() + " but was null", value);
assertTrue("object should be a " + expectedType.getName() + " but was: " + value + " with type: "
+ value.getClass().getName(), expectedType.isInstance(value));
return expectedType.cast(value);
}
public static void assertEndpointUri(Endpoint endpoint, String uri) {
assertNotNull("Endpoint is null when expecting endpoint for: " + uri, endpoint);
assertEquals("Endoint uri for: " + endpoint, uri, endpoint.getEndpointUri());
}
/**
* Asserts the In message on the exchange contains the expected value
*/
public static Object assertInMessageHeader(Exchange exchange, String name, Object expected) {
return assertMessageHeader(exchange.getIn(), name, expected);
}
/**
* Asserts the Out message on the exchange contains the expected value
*/
public static Object assertOutMessageHeader(Exchange exchange, String name, Object expected) {
return assertMessageHeader(exchange.getOut(), name, expected);
}
/**
* Asserts that the given exchange has an OUT message of the given body value
*
* @param exchange the exchange which should have an OUT message
* @param expected the expected value of the OUT message
* @throws InvalidPayloadException is thrown if the payload is not the expected class type
*/
public static void assertInMessageBodyEquals(Exchange exchange, Object expected) throws InvalidPayloadException {
assertNotNull("Should have a response exchange!", exchange);
Object actual;
if (expected == null) {
actual = exchange.getIn().getMandatoryBody();
assertEquals("in body of: " + exchange, expected, actual);
} else {
actual = exchange.getIn().getMandatoryBody(expected.getClass());
}
assertEquals("in body of: " + exchange, expected, actual);
LOG.debug("Received response: " + exchange + " with in: " + exchange.getIn());
}
/**
* Asserts that the given exchange has an OUT message of the given body value
*
* @param exchange the exchange which should have an OUT message
* @param expected the expected value of the OUT message
* @throws InvalidPayloadException is thrown if the payload is not the expected class type
*/
public static void assertOutMessageBodyEquals(Exchange exchange, Object expected) throws InvalidPayloadException {
assertNotNull("Should have a response exchange!", exchange);
Object actual;
if (expected == null) {
actual = exchange.getOut().getMandatoryBody();
assertEquals("output body of: " + exchange, expected, actual);
} else {
actual = exchange.getOut().getMandatoryBody(expected.getClass());
}
assertEquals("output body of: " + exchange, expected, actual);
LOG.debug("Received response: " + exchange + " with out: " + exchange.getOut());
}
public static Object assertMessageHeader(Message message, String name, Object expected) {
Object value = message.getHeader(name);
assertEquals("Header: " + name + " on Message: " + message, expected, value);
return value;
}
/**
* Asserts that the given expression when evaluated returns the given answer
*/
public static Object assertExpression(Expression expression, Exchange exchange, Object expected) {
Object value;
if (expected != null) {
value = expression.evaluate(exchange, expected.getClass());
} else {
value = expression.evaluate(exchange, Object.class);
}
LOG.debug("Evaluated expression: " + expression + " on exchange: " + exchange + " result: " + value);
assertEquals("Expression: " + expression + " on Exchange: " + exchange, expected, value);
return value;
}
/**
* Asserts that the predicate returns the expected value on the exchange
*/
public static void assertPredicateMatches(Predicate predicate, Exchange exchange) {
assertPredicate(predicate, exchange, true);
}
/**
* Asserts that the predicate returns the expected value on the exchange
*/
public static void assertPredicateDoesNotMatch(Predicate predicate, Exchange exchange) {
try {
PredicateAssertHelper.assertMatches(predicate, "Predicate should match: ", exchange);
} catch (AssertionError e) {
LOG.debug("Caught expected assertion error: " + e);
}
assertPredicate(predicate, exchange, false);
}
/**
* Asserts that the predicate returns the expected value on the exchange
*/
public static boolean assertPredicate(final Predicate predicate, Exchange exchange, boolean expected) {
if (expected) {
PredicateAssertHelper.assertMatches(predicate, "Predicate failed: ", exchange);
}
boolean value = predicate.matches(exchange);
LOG.debug("Evaluated predicate: " + predicate + " on exchange: " + exchange + " result: " + value);
assertEquals("Predicate: " + predicate + " on Exchange: " + exchange, expected, value);
return value;
}
/**
* Resolves an endpoint and asserts that it is found
*/
public static Endpoint resolveMandatoryEndpoint(CamelContext context, String uri) {
Endpoint endpoint = context.getEndpoint(uri);
assertNotNull("No endpoint found for URI: " + uri, endpoint);
return endpoint;
}
/**
* Resolves an endpoint and asserts that it is found
*/
public static T resolveMandatoryEndpoint(CamelContext context, String uri,
Class endpointType) {
T endpoint = context.getEndpoint(uri, endpointType);
assertNotNull("No endpoint found for URI: " + uri, endpoint);
return endpoint;
}
/**
* Creates an exchange with the given body
*/
protected Exchange createExchangeWithBody(CamelContext camelContext, Object body) {
Exchange exchange = new DefaultExchange(camelContext);
Message message = exchange.getIn();
message.setHeader("testClass", getClass().getName());
message.setBody(body);
return exchange;
}
public static T assertOneElement(List list) {
assertEquals("Size of list should be 1: " + list, 1, list.size());
return list.get(0);
}
/**
* Asserts that a list is of the given size
*/
public static List assertListSize(List list, int size) {
return assertListSize("List", list, size);
}
/**
* Asserts that a list is of the given size
*/
public static List assertListSize(String message, List list, int size) {
assertEquals(message + " should be of size: "
+ size + " but is: " + list, size, list.size());
return list;
}
/**
* Asserts that a list is of the given size
*/
public static Collection assertCollectionSize(Collection list, int size) {
return assertCollectionSize("List", list, size);
}
/**
* Asserts that a list is of the given size
*/
public static Collection assertCollectionSize(String message, Collection list, int size) {
assertEquals(message + " should be of size: "
+ size + " but is: " + list, size, list.size());
return list;
}
/**
* A helper method to create a list of Route objects for a given route builder
*/
public static List getRouteList(RouteBuilder builder) throws Exception {
CamelContext context = new DefaultCamelContext();
context.addRoutes(builder);
context.start();
List answer = context.getRoutes();
context.stop();
return answer;
}
/**
* Asserts that the text contains the given string
*
* @param text the text to compare
* @param containedText the text which must be contained inside the other text parameter
*/
public static void assertStringContains(String text, String containedText) {
assertNotNull("Text should not be null!", text);
assertTrue("Text: " + text + " does not contain: " + containedText, text.contains(containedText));
}
/**
* If a processor is wrapped with a bunch of DelegateProcessor or DelegateAsyncProcessor objects
* this call will drill through them and return the wrapped Processor.
*/
public static Processor unwrap(Processor processor) {
while (true) {
if (processor instanceof DelegateProcessor) {
processor = ((DelegateProcessor)processor).getProcessor();
} else {
return processor;
}
}
}
/**
* If a processor is wrapped with a bunch of DelegateProcessor or DelegateAsyncProcessor objects
* this call will drill through them and return the Channel.
*
* Returns null if no channel is found.
*/
public static Channel unwrapChannel(Processor processor) {
while (true) {
if (processor instanceof Channel) {
return (Channel) processor;
} else if (processor instanceof DelegateProcessor) {
processor = ((DelegateProcessor)processor).getProcessor();
} else {
return null;
}
}
}
/**
* Recursively delete a directory, useful to zapping test data
*
* @param file the directory to be deleted
* @return false if error deleting directory
*/
public static boolean deleteDirectory(String file) {
return deleteDirectory(new File(file));
}
/**
* Recursively delete a directory, useful to zapping test data
*
* @param file the directory to be deleted
* @return false if error deleting directory
*/
public static boolean deleteDirectory(File file) {
int tries = 0;
int maxTries = 5;
boolean exists = true;
while (exists && (tries < maxTries)) {
recursivelyDeleteDirectory(file);
tries++;
exists = file.exists();
if (exists) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// Ignore
}
}
}
return !exists;
}
private static void recursivelyDeleteDirectory(File file) {
if (!file.exists()) {
return;
}
if (file.isDirectory()) {
File[] files = file.listFiles();
for (File child : files) {
recursivelyDeleteDirectory(child);
}
}
boolean success = file.delete();
if (!success) {
LOG.warn("Deletion of file: " + file.getAbsolutePath() + " failed");
}
}
/**
* create the directory
*
* @param file the directory to be created
*/
public static void createDirectory(String file) {
File dir = new File(file);
dir.mkdirs();
}
/**
* To be used for folder/directory comparison that works across different platforms such
* as Window, Mac and Linux.
*/
public static void assertDirectoryEquals(String expected, String actual) {
assertDirectoryEquals(null, expected, actual);
}
/**
* To be used for folder/directory comparison that works across different platforms such
* as Window, Mac and Linux.
*/
public static void assertDirectoryEquals(String message, String expected, String actual) {
// must use single / as path separators
String expectedPath = expected.replace('\\', '/');
String actualPath = actual.replace('\\', '/');
if (message != null) {
assertEquals(message, expectedPath, actualPath);
} else {
assertEquals(expectedPath, actualPath);
}
}
/**
* To be used to check is a file is found in the file system
*/
public static void assertFileExists(String filename) {
File file = new File(filename);
assertTrue("File " + filename + " should exist", file.exists());
}
/**
* To be used to check is a file is not found in the file system
*/
public static void assertFileNotExists(String filename) {
File file = new File(filename);
assertFalse("File " + filename + " should not exist", file.exists());
}
/**
* Is this OS the given platform.
*
* Uses os.name from the system properties to determine the OS.
*
* @param platform such as Windows
* @return true if its that platform.
*/
public static boolean isPlatform(String platform) {
String osName = System.getProperty("os.name").toLowerCase(Locale.US);
return osName.indexOf(platform.toLowerCase(Locale.US)) > -1;
}
/**
* Is this Java by the given vendor.
*
* Uses java.vendor from the system properties to determine the vendor.
*
* @param vendor such as IBM
* @return true if its that vendor.
*/
public static boolean isJavaVendor(String vendor) {
String javaVendor = System.getProperty("java.vendor").toLowerCase(Locale.US);
return javaVendor.indexOf(vendor.toLowerCase(Locale.US)) > -1;
}
/**
* Is this Java 1.5
*
* @return true if its Java 1.5, false if its not (for example Java 1.6 or better)
* @deprecated will be removed in the near future as Camel now requires JDK1.6+
*/
@Deprecated
public static boolean isJava15() {
String javaVersion = System.getProperty("java.version").toLowerCase(Locale.US);
return javaVersion.startsWith("1.5");
}
/**
* Is this Java 1.6
*
* @return true if its Java 1.6, false if its not (for example Java 1.7 or better)
*/
public static boolean isJava16() {
String javaVersion = System.getProperty("java.version").toLowerCase(Locale.US);
return javaVersion.startsWith("1.6");
}
/**
* Is this Java 1.7
*
* @return true if its Java 1.7, false if its not (for example Java 1.8 or better)
*/
public static boolean isJava17() {
String javaVersion = System.getProperty("java.version").toLowerCase(Locale.US);
return javaVersion.startsWith("1.7");
}
/**
* Gets the current test method name
*
* @return the method name
*/
public String getTestMethodName() {
return testName.getMethodName();
}
}
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