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org.scalatest

BeforeAndAfterAll

trait BeforeAndAfterAll extends SuiteMixin

Stackable trait that can be mixed into suites that need methods invoked before and after executing the suite.

This trait allows code to be executed before and/or after all the tests and nested suites of a suite are run. This trait overrides run and calls the beforeAll method, then calls super.run. After the super.run invocation completes, whether it returns normally or completes abruptly with an exception, this trait's run method will invoke afterAll.

Trait BeforeAndAfterAll defines beforeAll and afterAll methods that take no parameters. This trait's implementation of these methods do nothing.

For example, the following ExampleSpec mixes in BeforeAndAfterAll and in beforeAll, creates and writes to a temp file. Each test class, ExampleSpec and all its nested suites--OneSpec, TwoSpec, RedSpec, and BlueSpec--tests that the file exists. After all of the nested suites have executed, afterAll is invoked, which deletes the file. (Note: if you're unfamiliar with the withFixture(OneArgTest) approach to shared fixtures, check out the documentation for trait fixture.FlatSpec.)

package org.scalatest.examples.beforeandafterall

import org.scalatest._
import java.io._

trait TempFileExistsSpec extends fixture.FlatSpecLike {

  protected val tempFileName = "tmp.txt"

  type FixtureParam = File
  override def withFixture(test: OneArgTest) = {
    val file = new File(tempFileName)
    withFixture(test.toNoArgTest(file)) // loan the fixture to the test
  }

  "The temp file" should ("exist in " + suiteName) in { file =>
    assert(file.exists)
  }
}

class OneSpec extends TempFileExistsSpec
class TwoSpec extends TempFileExistsSpec
class RedSpec extends TempFileExistsSpec
class BlueSpec extends TempFileExistsSpec

class ExampleSpec extends Suites(
  new OneSpec,
  new TwoSpec,
  new RedSpec,
  new BlueSpec
) with TempFileExistsSpec with BeforeAndAfterAll {

  // Set up the temp file needed by the test, taking
  // a file name from the config map
  override def beforeAll() {
    val writer = new FileWriter(tempFileName)
    try writer.write("Hello, suite of tests!")
    finally writer.close()
  }

  // Delete the temp file
  override def afterAll() {
    val file = new File(tempFileName)
    file.delete()
  }
}

If you do supply a mapping for "tempFileName" in the config map, you'll see that the temp file is available to all the tests:

scala> org.scalatest.run(new ExampleSpec)
ExampleSpec:
OneSpec:
The temp file
- should exist in OneSpec
TwoSpec:
The temp file
- should exist in TwoSpec
RedSpec:
The temp file
- should exist in RedSpec
BlueSpec:
The temp file
- should exist in BlueSpec
The temp file
- should exist in ExampleSpec

Note: this trait uses the Status result of Suite's "run" methods to ensure that the code in afterAll is executed after all the tests and nested suites are executed even if a Distributor is passed.

Note that it is not guaranteed that afterAll is invoked from the same thread as beforeAll, so if there's any shared state between beforeAll and afterAll you'll need to make sure they are synchronized correctly.

Self Type
BeforeAndAfterAll with Suite
Source
BeforeAndAfterAll.scala
Linear Supertypes
SuiteMixin, AnyRef, Any
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Abstract Value Members

  1. abstract def expectedTestCount(filter: Filter): Int

    The total number of tests that are expected to run when this Suite's run method is invoked.

    The total number of tests that are expected to run when this Suite's run method is invoked.

    filter

    a Filter with which to filter tests to count based on their tags

    Definition Classes
    SuiteMixin
  2. abstract def nestedSuites: IndexedSeq[Suite]

    An immutable IndexedSeq of this SuiteMixin object's nested Suites.

    An immutable IndexedSeq of this SuiteMixin object's nested Suites. If this SuiteMixin contains no nested Suites, this method returns an empty IndexedSeq.

    Definition Classes
    SuiteMixin
  3. abstract def rerunner: Option[String]

    The fully qualified name of the class that can be used to rerun this suite.

    The fully qualified name of the class that can be used to rerun this suite.

    Definition Classes
    SuiteMixin
  4. abstract def runNestedSuites(args: Args): Status

    Runs zero to many of this suite's nested suites.

    Runs zero to many of this suite's nested suites.

    args

    the Args for this run

    returns

    a Status object that indicates when all nested suites started by this method have completed, and whether or not a failure occurred.

    Attributes
    protected
    Definition Classes
    SuiteMixin
    Exceptions thrown

    NullArgumentException if args is null.

  5. abstract def runTest(testName: String, args: Args): Status

    Runs a test.

    Runs a test.

    testName

    the name of one test to execute.

    args

    the Args for this run

    returns

    a Status object that indicates when the test started by this method has completed, and whether or not it failed .

    Attributes
    protected
    Definition Classes
    SuiteMixin
    Exceptions thrown

    NullArgumentException if any of testName or args is null.

  6. abstract def runTests(testName: Option[String], args: Args): Status

    Runs zero to many of this suite's tests.

    Runs zero to many of this suite's tests.

    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.

    args

    the Args for this run

    returns

    a Status object that indicates when all tests started by this method have completed, and whether or not a failure occurred.

    Attributes
    protected
    Definition Classes
    SuiteMixin
    Exceptions thrown

    NullArgumentException if either testName or args is null.

  7. abstract val styleName: String

    This suite's style name.

    This suite's style name.

    This lifecycle method provides a string that is used to determine whether this suite object's style is one of the chosen styles for the project.

    Definition Classes
    SuiteMixin
  8. abstract def suiteId: String

    A string ID for this Suite that is intended to be unique among all suites reported during a run.

    A string ID for this Suite that is intended to be unique among all suites reported during a run.

    The suite ID is intended to be unique, because ScalaTest does not enforce that it is unique. If it is not unique, then you may not be able to uniquely identify a particular test of a particular suite. This ability is used, for example, to dynamically tag tests as having failed in the previous run when rerunning only failed tests.

    returns

    this Suite object's ID.

    Definition Classes
    SuiteMixin
  9. abstract def suiteName: String

    A user-friendly suite name for this Suite.

    A user-friendly suite name for this Suite.

    This trait's implementation of this method returns the simple name of this object's class. This trait's implementation of runNestedSuites calls this method to obtain a name for Reports to pass to the suiteStarting, suiteCompleted, and suiteAborted methods of the Reporter.

    returns

    this Suite object's suite name.

    Definition Classes
    SuiteMixin
  10. abstract def tags: Map[String, Set[String]]

    A Map whose keys are String names of tagged tests and whose associated values are the Set of tag names for the test.

    A Map whose keys are String names of tagged tests and whose associated values are the Set of tag names for the test. If a test has no associated tags, its name does not appear as a key in the returned Map. If this Suite contains no tests with tags, this method returns an empty Map.

    Subclasses may override this method to define and/or discover tags in a custom manner, but overriding method implementations should never return an empty Set as a value. If a test has no tags, its name should not appear as a key in the returned Map.

    Definition Classes
    SuiteMixin
  11. abstract def testDataFor(testName: String, theConfigMap: ConfigMap): TestData

    Provides a TestData instance for the passed test name, given the passed config map.

    Provides a TestData instance for the passed test name, given the passed config map.

    This method is used to obtain a TestData instance to pass to withFixture(NoArgTest) and withFixture(OneArgTest) and the beforeEach and afterEach methods of trait BeforeAndAfterEach.

    testName

    the name of the test for which to return a TestData instance

    theConfigMap

    the config map to include in the returned TestData

    returns

    a TestData instance for the specified test, which includes the specified config map

    Definition Classes
    SuiteMixin
  12. abstract def testNames: Set[String]

    A Set of test names.

    A Set of test names. If this Suite contains no tests, this method returns an empty Set.

    Although subclass and subtrait implementations of this method may return a Set whose iterator produces String test names in a well-defined order, the contract of this method does not required a defined order. Subclasses are free to implement this method and return test names in either a defined or undefined order.

    Definition Classes
    SuiteMixin

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def afterAll(): Unit

    Defines a method to be run after all of this suite's tests and nested suites have been run.

    Defines a method to be run after all of this suite's tests and nested suites have been run.

    This trait's implementation of run invokes this afterAll() method. This trait's implementation of this method does nothing.

    Attributes
    protected
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def beforeAll(): Unit

    Defines a method to be run before any of this suite's tests or nested suites are run.

    Defines a method to be run before any of this suite's tests or nested suites are run.

    This trait's implementation of run invokes this beforeAll() method. This trait's implementation of this method does nothing.

    Attributes
    protected
  7. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  10. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  11. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
  12. def hashCode(): Int
    Definition Classes
    AnyRef → Any
  13. val invokeBeforeAllAndAfterAllEvenIfNoTestsAreExpected: Boolean

    Flag to indicate whether to invoke beforeAll and afterAll even when there are no tests expected.

    Flag to indicate whether to invoke beforeAll and afterAll even when there are no tests expected.

    The default value is false, which means beforeAll and afterAll will not be invoked if there are no tests expected. Whether tests are expected is determined by invoking expectedTestCount passing in the passed filter. Because this count does not include tests excluded based on tags, such as ignored tests, this prevents any side effects in beforeAll or afterAll if no tests will ultimately be executed anyway. If you always want to see the side effects even if no tests are expected, override this val and set it to true.

  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
    Definition Classes
    AnyRef
  17. final def notifyAll(): Unit
    Definition Classes
    AnyRef
  18. def run(testName: Option[String], args: Args): Status

    Execute a suite surrounded by calls to beforeAll and afterAll.

    Execute a suite surrounded by calls to beforeAll and afterAll.

    This trait's implementation of this method ("this method") invokes beforeAll(ConfigMap) before executing any tests or nested suites and afterAll(ConfigMap) after executing all tests and nested suites. It runs the suite by invoking super.run, passing along the parameters passed to it.

    If any invocation of beforeAll completes abruptly with an exception, this method will complete abruptly with the same exception. If any call to super.run completes abruptly with an exception, this method will complete abruptly with the same exception, however, before doing so, it will invoke afterAll. If afterAll also completes abruptly with an exception, this method will nevertheless complete abruptly with the exception previously thrown by super.run. If super.run returns normally, but afterAll completes abruptly with an exception, this method will complete abruptly with the same exception.

    This method does not invoke either beforeAll or afterAll if runTestsInNewInstance is true so that any side effects only happen once per test if OneInstancePerTest is being used. In addition, if no tests are expected, then beforeAll and afterAll will be invoked only if the invokeBeforeAllAndAfterAllEvenIfNoTestsAreExpected flag is true. By default, this flag is false, so that if all tests are excluded (such as if the entire suite class has been marked with @Ignore), then side effects would happen only if at least one test will ultimately be executed in this suite or its nested suites.

    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.

    args

    the Args for this run

    returns

    a Status object that indicates when the test started by this method has completed, and whether or not it failed .

    Definition Classes
    BeforeAndAfterAll → SuiteMixin
  19. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  20. def toString(): String
    Definition Classes
    AnyRef → Any
  21. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  22. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  23. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from SuiteMixin

Inherited from AnyRef

Inherited from Any

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