org.scalatest.FeatureSpecLike.scala Maven / Gradle / Ivy
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/*
* Copyright 2001-2013 Artima, Inc.
*
* Licensed 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.scalatest
import scala.collection.immutable.ListSet
import org.scalatest.exceptions.StackDepthExceptionHelper.getStackDepthFun
import java.util.concurrent.atomic.AtomicReference
import java.util.ConcurrentModificationException
import org.scalatest.events._
import Suite.anExceptionThatShouldCauseAnAbort
import Suite.autoTagClassAnnotations
/**
* Implementation trait for class FeatureSpec, which represents
* a suite of tests in which each test represents one scenario of a
* feature.
*
*
* FeatureSpec is a class, not a
* trait, to minimize compile time given there is a slight compiler overhead to
* mixing in traits compared to extending classes. If you need to mix the
* behavior of FeatureSpec into some other class, you can use this
* trait instead, because class FeatureSpec does nothing more than
* extend this trait and add a nice toString implementation.
*
*
*
* See the documentation of the class for a detailed
* overview of FeatureSpec.
*
*
* @author Bill Venners
*/
@Finders(Array("org.scalatest.finders.FeatureSpecFinder"))
trait FeatureSpecLike extends Suite with Informing with Notifying with Alerting with Documenting { thisSuite =>
private final val engine = new Engine("concurrentFeatureSpecMod", "FeatureSpec")
import engine._
/**
* Returns an Informer that during test execution will forward strings passed to its
* apply method to the current reporter. If invoked in a constructor, it
* will register the passed string for forwarding later during test execution. If invoked from inside a scope,
* it will forward the information to the current reporter immediately. If invoked from inside a test function,
* it will record the information and forward it to the current reporter only after the test completed, as recordedEvents
* of the test completed event, such as TestSucceeded. If invoked at any other time, it will print to the standard output.
* This method can be called safely by any thread.
*/
protected def info: Informer = atomicInformer.get
/**
* Returns a Notifier that during test execution will forward strings (and other objects) passed to its
* apply method to the current reporter. If invoked in a constructor, it
* will register the passed string for forwarding later during test execution. If invoked while this
* FeatureSpec is being executed, such as from inside a test function, it will forward the information to
* the current reporter immediately. If invoked at any other time, it will
* print to the standard output. This method can be called safely by any thread.
*/
protected def note: Notifier = atomicNotifier.get
/**
* Returns an Alerter that during test execution will forward strings (and other objects) passed to its
* apply method to the current reporter. If invoked in a constructor, it
* will register the passed string for forwarding later during test execution. If invoked while this
* FeatureSpec is being executed, such as from inside a test function, it will forward the information to
* the current reporter immediately. If invoked at any other time, it will
* print to the standard output. This method can be called safely by any thread.
*/
protected def alert: Alerter = atomicAlerter.get
/**
* Returns a Documenter that during test execution will forward strings passed to its
* apply method to the current reporter. If invoked in a constructor, it
* will register the passed string for forwarding later during test execution. If invoked from inside a scope,
* it will forward the information to the current reporter immediately. If invoked from inside a test function,
* it will record the information and forward it to the current reporter only after the test completed, as recordedEvents
* of the test completed event, such as TestSucceeded. If invoked at any other time, it will print to the standard output.
* This method can be called safely by any thread.
*/
protected def markup: Documenter = atomicDocumenter.get
/**
* Register a test with the given spec text, optional tags, and test function value that takes no arguments.
* An invocation of this method is called an “example.”
*
* This method will register the test for later execution via an invocation of one of the execute
* methods. The name of the test will be a concatenation of the text of all surrounding describers,
* from outside in, and the passed spec text, with one space placed between each item. (See the documenation
* for testNames for an example.) The resulting test name must not have been registered previously on
* this FeatureSpec instance.
*
* @param specText the specification text, which will be combined with the descText of any surrounding describers
* to form the test name
* @param testTags the optional list of tags for this test
* @param testFun the test function
* @throws DuplicateTestNameException if a test with the same name has been registered previously
* @throws TestRegistrationClosedException if invoked after run has been invoked on this suite
* @throws NullPointerException if specText or any passed test tag is null
*/
protected def scenario(specText: String, testTags: Tag*)(testFun: => Unit) {
registerTest(Resources("scenario", specText.trim), Transformer(testFun _), "scenarioCannotAppearInsideAnotherScenario", "FeatureSpecLike.scala", "scenario", 4, -2, None, None, None, testTags: _*)
}
/**
* Register a test to ignore, which has the given spec text, optional tags, and test function value that takes no arguments.
* This method will register the test for later ignoring via an invocation of one of the execute
* methods. This method exists to make it easy to ignore an existing test by changing the call to it
* to ignore without deleting or commenting out the actual test code. The test will not be executed, but a
* report will be sent that indicates the test was ignored. The name of the test will be a concatenation of the text of all surrounding describers,
* from outside in, and the passed spec text, with one space placed between each item. (See the documenation
* for testNames for an example.) The resulting test name must not have been registered previously on
* this FeatureSpec instance.
*
* @param specText the specification text, which will be combined with the descText of any surrounding describers
* to form the test name
* @param testTags the optional list of tags for this test
* @param testFun the test function
* @throws DuplicateTestNameException if a test with the same name has been registered previously
* @throws TestRegistrationClosedException if invoked after run has been invoked on this suite
* @throws NullPointerException if specText or any passed test tag is null
*/
protected def ignore(specText: String, testTags: Tag*)(testFun: => Unit) {
registerIgnoredTest(Resources("scenario", specText), Transformer(testFun _), "ignoreCannotAppearInsideAScenario", "FeatureSpecLike.scala", "ignore", 4, -2, None, testTags: _*)
}
/**
* Describe a “subject” being specified and tested by the passed function value. The
* passed function value may contain more describers (defined with describe) and/or tests
* (defined with it). This trait's implementation of this method will register the
* description string and immediately invoke the passed function.
*/
protected def feature(description: String)(fun: => Unit) {
if (!currentBranchIsTrunk)
throw new NotAllowedException(Resources("cantNestFeatureClauses"), getStackDepthFun("FeatureSpecLike.scala", "feature"))
registerNestedBranch(Resources("feature", description.trim), None, fun, "featureCannotAppearInsideAScenario", "FeatureSpecLike.scala", "feature", 4, -2, None)
}
/**
* A Map whose keys are String names of tagged tests and whose associated values are
* the Set of tag names for the test. If this FeatureSpec contains no tags, this method returns an empty Map.
*
*
* This trait's implementation returns tags that were passed as strings contained in Tag objects passed to
* methods scenario and ignore.
*
*
*
* In addition, this trait's implementation will also auto-tag tests with class level annotations.
* For example, if you annotate @Ignore at the class level, all test methods in the class will be auto-annotated with
* org.scalatest.Ignore.
*
*/
override def tags: Map[String, Set[String]] = autoTagClassAnnotations(atomic.get.tagsMap, this)
/**
* Run a test. This trait's implementation runs the test registered with the name specified by
* testName. Each test's name is a concatenation of the text of all describers surrounding a test,
* from outside in, and the test's spec text, with one space placed between each item. (See the documenation
* for testNames for an example.)
*
* @param testName the name of one test to execute.
* @param args the Args for this run
* @return a Status object that indicates when the test started by this method has completed, and whether or not it failed .
*
* @throws NullPointerException if any of testName, reporter, stopper, or configMap
* is null.
*/
protected override def runTest(testName: String, args: Args): Status = {
def invokeWithFixture(theTest: TestLeaf): Outcome = {
val theConfigMap = args.configMap
val testData = testDataFor(testName, theConfigMap)
withFixture(
new NoArgTest {
val name = testData.name
def apply(): Outcome = { theTest.testFun() }
val configMap = testData.configMap
val scopes = testData.scopes
val text = testData.text
val tags = testData.tags
}
)
}
runTestImpl(thisSuite, testName, args, false, invokeWithFixture)
}
/**
* Run zero to many of this FeatureSpec's tests.
*
*
* This method takes a testName parameter that optionally specifies a test to invoke.
* If testName is Some, this trait's implementation of this method
* invokes runTest on this object, passing in:
*
*
*
* testName - the String value of the testName Option passed
* to this methodreporter - the Reporter passed to this method, or one that wraps and delegates to itstopper - the Stopper passed to this method, or one that wraps and delegates to itconfigMap - the configMap passed to this method, or one that wraps and delegates to it
*
*
* This method takes a Set of tag names that should be included (tagsToInclude), and a Set
* that should be excluded (tagsToExclude), when deciding which of this Suite's tests to execute.
* If tagsToInclude is empty, all tests will be executed
* except those those belonging to tags listed in the tagsToExclude Set. If tagsToInclude is non-empty, only tests
* belonging to tags mentioned in tagsToInclude, and not mentioned in tagsToExclude
* will be executed. However, if testName is Some, tagsToInclude and tagsToExclude are essentially ignored.
* Only if testName is None will tagsToInclude and tagsToExclude be consulted to
* determine which of the tests named in the testNames Set should be run. For more information on trait tags, see the main documentation for this trait.
*
*
*
* If testName is None, this trait's implementation of this method
* invokes testNames on this Suite to get a Set of names of tests to potentially execute.
* (A testNames value of None essentially acts as a wildcard that means all tests in
* this Suite that are selected by tagsToInclude and tagsToExclude should be executed.)
* For each test in the testName Set, in the order
* they appear in the iterator obtained by invoking the elements method on the Set, this trait's implementation
* of this method checks whether the test should be run based on the tagsToInclude and tagsToExclude Sets.
* If so, this implementation invokes runTest, passing in:
*
*
*
* testName - the String name of the test to run (which will be one of the names in the testNames Set)reporter - the Reporter passed to this method, or one that wraps and delegates to itstopper - the Stopper passed to this method, or one that wraps and delegates to itconfigMap - the configMap passed to this method, or one that wraps and delegates to it
*
* @param testName an optional name of one test to run. If None, all relevant tests should be run.
* I.e., None acts like a wildcard that means run all relevant tests in this Suite.
* @param args the Args for this run
* @return a Status object that indicates when all tests started by this method have completed, and whether or not a failure occurred.
*
* @throws NullPointerException if any of the passed parameters is null.
* @throws IllegalArgumentException if testName is defined, but no test with the specified test name
* exists in this Suite
*/
protected override def runTests(testName: Option[String], args: Args): Status = {
runTestsImpl(thisSuite, testName, args, info, false, runTest)
}
/**
* An immutable Set of test names. If this FeatureSpec contains no tests, this method returns an
* empty Set.
*
*
* This trait's implementation of this method will return a set that contains the names of all registered tests. The set's
* iterator will return those names in the order in which the tests were registered. Each test's name is composed
* of the concatenation of the text of each surrounding describer, in order from outside in, and the text of the
* example itself, with all components separated by a space. For example, consider this FeatureSpec:
*
*
*
* import org.scalatest.FeatureSpec
*
* class StackSpec extends FeatureSpec {
* feature("A Stack") {
* scenario("(when not empty) must allow me to pop") {}
* scenario("(when not full) must allow me to push") {}
* }
* }
*
*
*
* Invoking testNames on this FeatureSpec will yield a set that contains the following
* two test name strings:
*
*
*
* "A Stack (when not empty) must allow me to pop"
* "A Stack (when not full) must allow me to push"
*
*/
// override def testNames: Set[String] = ListSet(atomic.get.testsList.map(_.testName): _*)
override def testNames: Set[String] = {
// I'm returning a ListSet here so that they tests will be run in registration order
ListSet(atomic.get.testNamesList.toArray: _*)
}
override def run(testName: Option[String], args: Args): Status = {
runImpl(thisSuite, testName, args, super.run)
}
/**
* Registers shared scenarios.
*
*
* This method enables the following syntax for shared scenarios in a FeatureSpec:
*
*
*
* scenariosFor(nonEmptyStack(lastValuePushed))
*
*
*
* This method just provides syntax sugar intended to make the intent of the code clearer.
* Because the parameter passed to it is
* type Unit, the expression will be evaluated before being passed, which
* is sufficient to register the shared scenarios. For examples of shared scenarios, see the
* Shared scenarios section in the main documentation for this trait.
*
*/
protected def scenariosFor(unit: Unit) {}
/**
* Suite style name.
*/
final override val styleName: String = "org.scalatest.FeatureSpec"
override def testDataFor(testName: String, theConfigMap: ConfigMap = ConfigMap.empty): TestData = createTestDataFor(testName, theConfigMap, this)
}