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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.fixture

import org.scalatest._
import words.{CanVerb, ResultOfAfterWordApplication, ShouldVerb, BehaveWord, MustVerb,
  StringVerbBlockRegistration}
import scala.collection.immutable.ListSet
import org.scalatest.exceptions.StackDepthExceptionHelper.getStackDepth
import java.util.concurrent.atomic.AtomicReference
import java.util.ConcurrentModificationException
import org.scalatest.events._
import org.scalatest.Suite.anExceptionThatShouldCauseAnAbort
import org.scalatest.Suite.autoTagClassAnnotations

/**
 * Implementation trait for class fixture.WordSpec, which is
 * a sister class to org.scalatest.WordSpec that can pass a
 * fixture object into its tests.
 * 
 * 
    
 * fixture.WordSpec 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 fixture.WordSpec into some other
 * class, you can use this trait instead, because class
 * fixture.WordSpec does nothing more than extend this trait and add a nice toString implementation.
 * 
    
 *
 * 
    
 * See the documentation of the class for a detailed
 * overview of fixture.WordSpec.
 * 
    
 *
 * @author Bill Venners
 */
@Finders(Array("org.scalatest.finders.WordSpecFinder"))
trait WordSpecLike extends Suite with ShouldVerb with MustVerb with CanVerb with Informing with Notifying with Alerting with Documenting { thisSuite =>

  private final val engine = new FixtureEngine[FixtureParam]("concurrentFixtureWordSpecMod", "FixtureWordSpec")
  import engine._
  
  private[scalatest] val sourceFileName = "WordSpecLike.scala"

  /**
   * 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
   * fixture.WordSpec 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
   * fixture.WordSpec 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 WordSpec 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 methodName Caller's method name
   * @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
   */
  private def registerTestToRun(specText: String, testTags: List[Tag], methodName: String, testFun: FixtureParam => Any) {
    registerTest(specText, Transformer(testFun), "itCannotAppearInsideAnotherIt", sourceFileName, methodName, 4, -3, 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 WordSpec 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 methodName Caller's method name
   * @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
   */
  private def registerTestToIgnore(specText: String, testTags: List[Tag], methodName: String, testFun: FixtureParam => Any) {
    registerIgnoredTest(specText, Transformer(testFun), "ignoreCannotAppearInsideAnIt", sourceFileName, methodName, 4, -3, None, testTags: _*)
  }

  private def registerBranch(description: String, childPrefix: Option[String], verb: String, methodName: String, stackDepth: Int, adjustment: Int, fun: () => Unit) {
    registerNestedBranch(description, childPrefix, fun(), verb + "CannotAppearInsideAnIn", sourceFileName, methodName, stackDepth, adjustment, None)
  }

  private def registerShorthandBranch(childPrefix: Option[String], notAllowResourceName: String, methodName:String, stackDepth: Int, adjustment: Int, fun: () => Unit) {
    // Shorthand syntax only allow at top level, and only after "..." when, "..." should/can/must, or it should/can/must
    if (engine.currentBranchIsTrunk) {
      val currentBranch = engine.atomic.get.currentBranch
      // headOption because subNodes are in reverse order
      currentBranch.subNodes.headOption match {
        case Some(last) =>
          last match {
            case DescriptionBranch(_, descriptionText, _, _) =>
              registerNestedBranch(descriptionText, childPrefix, fun(), methodName + "CannotAppearInsideAnIn", "WordSpecLike.scala", methodName, stackDepth, adjustment, None)
            case _ =>
              throw new exceptions.NotAllowedException(Resources(notAllowResourceName), 2)
          }
        case None =>
          throw new exceptions.NotAllowedException(Resources(notAllowResourceName), 2)
      }
    }
    else
      throw new exceptions.NotAllowedException(Resources(notAllowResourceName), 2)
  }

  /**
   * Class that supports the registration of tagged tests.
   *
   * 
    
   * Instances of this class are returned by the taggedAs method of 
   * class WordSpecStringWrapper.
   * 
    
   *
   * @author Bill Venners
   */
  protected final class ResultOfTaggedAsInvocationOnString(specText: String, tags: List[Tag]) {

    /**
     * Supports tagged test registration.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" taggedAs(SlowTest) in { fixture => ... }
     *                                       ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def in(testFun: FixtureParam => Any) {
      registerTestToRun(specText, tags, "in", testFun)
    }

    /**
     * Supports tagged test registration, for tests that don't take a fixture.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" taggedAs(SlowTest) in { () => ... }
     *                                       ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def in(testFun: () => Any) {
      registerTestToRun(specText, tags, "in", new NoArgTestWrapper(testFun))
    }

    /**
     * Supports registration of tagged, pending tests.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" taggedAs(SlowTest) is (pending)
     *                                       ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def is(testFun: => PendingNothing) {
      registerTestToRun(specText, tags, "is", unusedFixtureParam => testFun)
    }

    /**
     * Supports registration of tagged, ignored tests.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" taggedAs(SlowTest) ignore { fixture => ... }
     *                                       ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def ignore(testFun: FixtureParam => Any) {
      registerTestToIgnore(specText, tags, "ignore", testFun)
    }

    /**
     * Supports registration of tagged, ignored tests that take no fixture parameter.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" taggedAs(SlowTest) ignore { () => ... }
     *                                       ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def ignore(testFun: () => Any) {
      registerTestToIgnore(specText, tags, "ignore", new NoArgTestWrapper(testFun))
    }
  }

  /**
   * A class that via an implicit conversion (named convertToWordSpecStringWrapper) enables
   * methods when, which, in, is, taggedAs
   * and ignore to be invoked on Strings.
   *
   * 
    
   * This class provides much of the syntax for fixture.WordSpec, however, it does not add
   * the verb methods (should, must, and can) to String.
   * Instead, these are added via the ShouldVerb, MustVerb, and CanVerb
   * traits, which fixture.WordSpec mixes in, to avoid a conflict with implicit conversions provided
   * in ShouldMatchers and MustMatchers. 
   * 
    
   *
   * @param string the string that is wrapped
   *
   * @author Bill Venners
   */
  protected final class WordSpecStringWrapper(string: String) {

    /**
     * Supports test registration.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" in { fixture => ... }
     *                    ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def in(testFun: FixtureParam => Any) {
      registerTestToRun(string, List(), "in", testFun)
    }

    /**
     * Supports registration of tests that take no fixture.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" in { () => ... }
     *                    ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def in(testFun: () => Any) {
      registerTestToRun(string, List(), "in", new NoArgTestWrapper(testFun))
    }

    /**
     * Supports pending test registration.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" is (pending)
     *                    ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def is(testFun: => PendingNothing) {
      registerTestToRun(string, List(), "is", unusedFixtureParam => testFun)
    }

    /**
     * Supports ignored test registration.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" ignore { fixture => ... }
     *                    ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def ignore(testFun: FixtureParam => Any) {
      registerTestToIgnore(string, List(), "ignore", testFun)
    }

    /**
     * Supports registration of ignored tests that take no fixture.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" ignore { () => ... }
     *                    ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param testFun the test function
     */
    def ignore(testFun: () => Any) {
      registerTestToIgnore(string, List(), "ignore", new NoArgTestWrapper(testFun))
    
    }

    /**
     * Supports tagged test registration.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "complain on peek" taggedAs(SlowTest) in { fixture => ... }
     *                    ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param firstTestTag the first mandatory test tag
     * @param otherTestTags the others additional test tags
     * @return an new instance of ResultOfTaggedAsInvocationOnString
     */
    def taggedAs(firstTestTag: Tag, otherTestTags: Tag*) = {
      val tagList = firstTestTag :: otherTestTags.toList
      new ResultOfTaggedAsInvocationOnString(string, tagList)
    }

    /**
     * Registers a when clause.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "A Stack" when { ... }
     *           ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param f the function which is the body of the scope
     */
    def when(f: => Unit) {
      registerBranch(string, Some("when"), "when", "when", 4, -2, f _)
    }

    /**
     * Registers a when clause that is followed by an after word.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * val theUser = afterWord("the user")
     *
     * "A Stack" when theUser { ... }
     *           ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param resultOfAfterWordApplication a ResultOfAfterWordApplication
     */
    def when(resultOfAfterWordApplication: ResultOfAfterWordApplication) {
      registerBranch(string, Some("when " + resultOfAfterWordApplication.text), "when", "when", 4, -2, resultOfAfterWordApplication.f)
    }

    /**
     * that has been deprecated and will be used for a different purpose in a future version of ScalaTest. Please
     * use which instead. (Warning: this change will likely have a shorter than usual deprecation cycle: less than a year.)
     */
    @deprecated("Please use \"which\" instead of \"that\".")
    def that(f: => Unit) {
      registerBranch(string.trim + " that", None, "that", "that", 4, -2, f _)
    }
    
    /**
     * Registers a which clause.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "a rerun button" which {
     *                  ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param f the function which is the body of the scope
     */
    def which(f: => Unit) {
      registerBranch(string.trim + " which", None, "which", "which", 4, -2, f _)
    }

    /**
     * that has been deprecated and will be used for a different purpose in a future version of ScalaTest. Please
     * use which instead. (Warning: this change will likely have a shorter than usual deprecation cycle: less than a year.)
     */
    @deprecated("Please use \"which\" instead of \"that\".")
    def that(resultOfAfterWordApplication: ResultOfAfterWordApplication) {
      registerBranch(string.trim + " that " + resultOfAfterWordApplication.text.trim, None, "that", "that", 4, -2, resultOfAfterWordApplication.f)
    }
    
    /**
     * Registers a which clause.
     *
     * 
    
     * For example, this method supports syntax such as the following:
     * 
    
     *
     * 
         * "a rerun button" which {
     *                  ^
     * 
    
     *
     * 
    
     * For more information and examples of this method's use, see the main documentation for trait fixture.WordSpec.
     * 
    
     *
     * @param resultOfAfterWordApplication a ResultOfAfterWordApplication
     */
    def which(resultOfAfterWordApplication: ResultOfAfterWordApplication) {
      registerBranch(string.trim + " which " + resultOfAfterWordApplication.text.trim, None, "which", "which", 4, -2, resultOfAfterWordApplication.f)
    }
  }

  /**
   * Class whose instances are after words, which can be used to reduce text duplication.
   *
   * 
    
   * If you are repeating a word or phrase at the beginning of each string inside
   * a block, you can "move the word or phrase" out of the block with an after word.
   * You create an after word by passing the repeated word or phrase to the afterWord method.
   * Once created, you can place the after word after when, a verb
   * (should, must, or can), or
   * which. (You can't place one after in or is, the
   * words that introduce a test.) Here's an example that has after words used in all three
   * places:
   * 
    
   *
   * 
       * import org.scalatest.fixture
   * import ConfigMapFixture
   * 
   * class ScalaTestGUISpec extends fixture.WordSpec with ConfigMapFixture {
   * 
   *   def theUser = afterWord("the user")
   *   def display = afterWord("display")
   *   def is = afterWord("is")
   * 
   *   "The ScalaTest GUI" when theUser {
   *     "clicks on an event report in the list box" should display {
   *       "a blue background in the clicked-on row in the list box" in { cm => }
   *       "the details for the event in the details area" in { cm => }
   *       "a rerun button," which is {
   *         "enabled if the clicked-on event is rerunnable" in { cm => }
   *         "disabled if the clicked-on event is not rerunnable" in { cm => }
   *       }
   *     }
   *   }
   * }
   * 
    
   *
   * 
    
   * Running the previous fixture.WordSpec in the Scala interpreter would yield:
   * 
    
   *
   * 
       * scala> (new ScalaTestGUISpec).run()
   * The ScalaTest GUI (when the user clicks on an event report in the list box) 
   * - should display a blue background in the clicked-on row in the list box
   * - should display the details for the event in the details area
   * - should display a rerun button, which is enabled if the clicked-on event is rerunnable
   * - should display a rerun button, which is disabled if the clicked-on event is not rerunnable
   * 
    
   *
   * @param text the afterword text
   */
  protected final class AfterWord(text: String) {

    /**
     * Supports the use of after words.
     *
     * 
    
     * This method transforms a block of code into a ResultOfAfterWordApplication, which
     * is accepted by when, should, must, can, and which
     * methods.  For more information, see the main documentation for trait org.scalatest.WordSpec.
     * 
    
     *
     * @param f the function to be transformed into ResultOfAfterWordApplication
     * @return an new instance of ResultOfAfterWordApplication
     */
    def apply(f: => Unit) = new ResultOfAfterWordApplication(text, f _)
  }

  /**
   * Creates an after word that an be used to reduce text duplication.
   *
   * 
    
   * If you are repeating a word or phrase at the beginning of each string inside
   * a block, you can "move the word or phrase" out of the block with an after word.
   * You create an after word by passing the repeated word or phrase to the afterWord method.
   * Once created, you can place the after word after when, a verb
   * (should, must, or can), or
   * which. (You can't place one after in or is, the
   * words that introduce a test.) Here's an example that has after words used in all three
   * places:
   * 
    
   *
   * 
       * import org.scalatest.fixture
   * import ConfigMapFixture
   * 
   * class ScalaTestGUISpec extends fixture.WordSpec with ConfigMapFixture {
   * 
   *   def theUser = afterWord("the user")
   *   def display = afterWord("display")
   *   def is = afterWord("is")
   * 
   *   "The ScalaTest GUI" when theUser {
   *     "clicks on an event report in the list box" should display {
   *       "a blue background in the clicked-on row in the list box" in { cm => }
   *       "the details for the event in the details area" in { cm => }
   *       "a rerun button," which is {
   *         "enabled if the clicked-on event is rerunnable" in { cm => }
   *         "disabled if the clicked-on event is not rerunnable" in { cm => }
   *       }
   *     }
   *   }
   * }
   * 
    
   *
   * 
    
   * Running the previous fixture.WordSpec in the Scala interpreter would yield:
   * 
    
   *
   * 
       * scala> (new ScalaTestGUISpec).run()
   * The ScalaTest GUI (when the user clicks on an event report in the list box) 
   * - should display a blue background in the clicked-on row in the list box
   * - should display the details for the event in the details area
   * - should display a rerun button, which is enabled if the clicked-on event is rerunnable
   * - should display a rerun button, which is disabled if the clicked-on event is not rerunnable
   * 
    
   *
   * @param text the after word text
   * @return an instance of AfterWord
   */
  protected def afterWord(text: String) = new AfterWord(text)

  
  /**
   * Class that supports shorthand scope registration via the instance referenced from WordSpecLike's it field.
   *
   * 
    
   * This class enables syntax such as the following test registration:
   * 
    
   *
   * 
       * "A Stack" when { ... }
   * 
   * it should { ... }
   * ^
   * 
    
   *
   * 
    
   * For more information and examples of the use of the it field, see the main documentation 
   * for WordSpec.
   * 
    
   */
  protected final class ItWord {
    
    /**
     * Supports the registration of scope with should in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "A Stack" when { ... }
     * 
     * it should { ... }
     *    ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def should(right: => Unit) {
      registerShorthandBranch(Some("should"), "itMustAppearAfterTopLevelSubject", "should", 3, -2, right _)
    }
    
    /**
     * Supports the registration of scope with must in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "A Stack" when { ... }
     * 
     * it must { ... }
     *    ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def must(right: => Unit) {
      registerShorthandBranch(Some("must"), "itMustAppearAfterTopLevelSubject", "must", 3, -2, right _)
    }
    
    /**
     * Supports the registration of scope with can in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "A Stack" when { ... }
     * 
     * it can { ... }
     *    ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def can(right: => Unit) {
      registerShorthandBranch(Some("can"), "itMustAppearAfterTopLevelSubject", "can", 3, -2, right _)
    }
    
    /**
     * Supports the registration of scope with when in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "A Stack" should { ... }
     * 
     * it when { ... }
     *    ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def when(right: => Unit) {
      registerShorthandBranch(Some("when"), "itMustAppearAfterTopLevelSubject", "when", 3, -2, right _)
    }
  }
  
  /**
   * Supports shorthand scope registration in WordSpecLikes.
   *
   * 
    
   * This field enables syntax such as the following test registration:
   * 
    
   *
   * 
       * "A Stack" when { ... }
   * 
   * it should { ... }
   * ^
   * 
    
   *
   * 
    
   * For more information and examples of the use of the it field, see the main documentation 
   * for WordSpec.
   * 
    
   */
  protected val it = new ItWord
  
  /**
   * Class that supports shorthand scope registration via the instance referenced from WordSpecLike's they field.
   *
   * 
    
   * This class enables syntax such as the following test registration:
   * 
    
   *
   * 
       * "Basketball players" when { ... }
   * 
   * they should { ... }
   * ^
   * 
    
   *
   * 
    
   * For more information and examples of the use of the they field, see the main documentation 
   * for WordSpec.
   * 
    
   */
  protected final class TheyWord {
    
    /**
     * Supports the registration of scope with should in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "Basketball players" when { ... }
     * 
     * they should { ... }
     *      ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def should(right: => Unit) {
      registerShorthandBranch(Some("should"), "theyMustAppearAfterTopLevelSubject", "should", 3, -2, right _)
    }
    
    /**
     * Supports the registration of scope with must in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "Basketball players" when { ... }
     * 
     * they must { ... }
     *      ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def must(right: => Unit) {
      registerShorthandBranch(Some("must"), "theyMustAppearAfterTopLevelSubject", "must", 3, -2, right _)
    }
    
    /**
     * Supports the registration of scope with can in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "Basketball players" when { ... }
     * 
     * they can { ... }
     *      ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def can(right: => Unit) {
      registerShorthandBranch(Some("can"), "theyMustAppearAfterTopLevelSubject", "can", 3, -2, right _)
    }
    
    /**
     * Supports the registration of scope with when in a WordSpecLike.
     *
     * 
    
     * This method supports syntax such as the following:
     * 
    
     *
     * 
         * "Basketball players" should { ... }
     * 
     * they when { ... }
     *      ^
     * 
    
     *
     * 
    
     * For examples of scope registration, see the main documentation
     * for WordSpec.
     * 
    
     *
     * @param right the body function
     */
    def when(right: => Unit) {
      registerShorthandBranch(Some("when"), "theyMustAppearAfterTopLevelSubject", "when", 3, -2, right _)
    }
  }
  
  /**
   * Supports shorthand scope registration in WordSpecLikes.
   *
   * 
    
   * This field enables syntax such as the following test registration:
   * 
    
   *
   * 
       * "A Stack" when { ... }
   * 
   * they should { ... }
   * ^
   * 
    
   *
   * 
    
   * For more information and examples of the use of the they field, see the main documentation 
   * for WordSpec.
   * 
    
   */
  protected val they = new TheyWord

  import scala.language.implicitConversions

  /**
   * Implicitly converts Strings to WordSpecStringWrapper, which enables
   * methods when, which, in, is, taggedAs
   * and ignore to be invoked on Strings.
   *
   * @param s String to be wrapped
   * @return an instance of WordSpecStringWrapper
   */
  protected implicit def convertToWordSpecStringWrapper(s: String) = new WordSpecStringWrapper(s)

  /**
   * Supports the registration of subjects.
   *
   * 
    
   * For example, this method enables syntax such as the following:
   * 
    
   *
   * 
       * "A Stack" should { ...
   *           ^
   * 
    
   *
   * 
    
   * This function is passed as an implicit parameter to a should method
   * provided in ShouldVerb, a must method
   * provided in MustVerb, and a can method
   * provided in CanVerb. When invoked, this function registers the
   * subject and executes the block.
   * 
    
   */
  protected implicit val subjectRegistrationFunction: StringVerbBlockRegistration =
    new StringVerbBlockRegistration {
      def apply(left: String, verb: String, f: () => Unit) = registerBranch(left, Some(verb), verb, "apply", 6, -2, f)
    }

  /**
   * Supports the registration of subject descriptions with after words.
   *
   * 
    
   * For example, this method enables syntax such as the following:
   * 
    
   *
   * 
       * def provide = afterWord("provide")
   *
   * "The ScalaTest Matchers DSL" can provide { ... }
   *                              ^
   * 
    
   *
   * 
    
   * This function is passed as an implicit parameter to a should method
   * provided in ShouldVerb, a must method
   * provided in MustVerb, and a can method
   * provided in CanVerb. When invoked, this function registers the
   * subject and executes the block.
   * 
    
   */
  protected implicit val subjectWithAfterWordRegistrationFunction: (String, String, ResultOfAfterWordApplication) => Unit = {
    (left, verb, resultOfAfterWordApplication) => {
      val afterWordFunction =
        () => {
          registerBranch(resultOfAfterWordApplication.text, None, verb, "apply", 11, -2, resultOfAfterWordApplication.f)
        }
      registerBranch(left, Some(verb), verb, "apply", 7, -2, afterWordFunction)
    }
  }

  /**
   * A Map whose keys are String tag names to which tests in this WordSpec belong, and values
   * the Set of test names that belong to each tag. If this fixture.WordSpec 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 test 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 @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 or args is null.
   */
  protected override def runTest(testName: String, args: Args): Status = {

    def invokeWithFixture(theTest: TestLeaf): Outcome = {
      theTest.testFun match {
        case transformer: org.scalatest.fixture.Transformer[_] => 
          transformer.exceptionalTestFun match {
            case wrapper: NoArgTestWrapper[_] =>
              withFixture(new FixturelessTestFunAndConfigMap(testName, wrapper.test, args.configMap))
            case fun => withFixture(new TestFunAndConfigMap(testName, fun, args.configMap))
          }
        case other => 
          other match {
            case wrapper: NoArgTestWrapper[_] =>
              withFixture(new FixturelessTestFunAndConfigMap(testName, wrapper.test, args.configMap))
            case fun => withFixture(new TestFunAndConfigMap(testName, fun, args.configMap))
          }
      }
    }

    runTestImpl(thisSuite, testName, args, true, invokeWithFixture)
  }

  /**
   * 
    
   * Run zero to many of this WordSpec'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 with passed args.
   * 
    
   *
   * 
    
   * This method takes an args that contains 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 with passed args.
   * 
    
   *
   * @param testName an optional name of one test to execute. If None, all relevant tests should be executed.
   *                 I.e., None acts like a wildcard that means execute all relevant tests in this WordSpec.
   * @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 testName or args is null.
   */
  protected override def runTests(testName: Option[String], args: Args): Status = {
    runTestsImpl(thisSuite, testName, args, info, true, runTest)
  }

  /**
   * An immutable Set of test names. If this fixture.WordSpec 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.
   * 
    
   *
   * @return the Set of test names
   */
  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)
  }

  /**
   * Supports shared test registration in fixture.WordSpecs.
   *
   * 
    
   * This field enables syntax such as the following:
   * 
    
   *
   * 
       * behave like nonFullStack(stackWithOneItem)
   * ^
   * 
    
   *
   * 
    
   * For more information and examples of the use of behave, see the Shared tests section
   * in the main documentation for trait org.scalatest.WordSpec.
   * 
    
   */
  protected val behave = new BehaveWord
  
  /**
   * Suite style name.
   *
   * @return org.scalatest.fixture.WordSpec
   */
  final override val styleName: String = "org.scalatest.fixture.WordSpec"
    
  override def testDataFor(testName: String, theConfigMap: ConfigMap = ConfigMap.empty): TestData = createTestDataFor(testName, theConfigMap, this)
}




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