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trait StackDepth extends AnyRef

Trait that encapsulates the information required of an exception thrown by ScalaTest's assertions and matchers, which includes a stack depth at which the failing line of test code resides.

This trait exists so that it can be mixed into two exception superclasses, StackDepthException, from which extend several exceptions that do not depend on JUnit, and JUnitTestFailedError, which does depend on JUnit. The latter, which requires JUnit be in the classpath, ensures failed ScalaTest assertions are reported as "failures," not "errors," by JUnit.

Self Type
StackDepth with Throwable
Source
StackDepth.scala
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AnyRef, Any
Known Subclasses
DuplicateTestNameException, GeneratorDrivenPropertyCheckFailedException, NotAllowedException, PropertyCheckFailedException, StackDepthException, TableDrivenPropertyCheckFailedException, TestCanceledException, TestFailedDueToTimeoutException, TestFailedException, TestRegistrationClosedException, JUnitTestFailedError
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Abstract Value Members

  1. abstract val cause: Option[Throwable]

    An optional cause, the Throwable that caused this StackDepth exception to be thrown.

  2. abstract val failedCodeFilePathname: Option[String]

    A string that provides the full pathname of the source file containing the line of code that failed, suitable for presenting to a user.

    A string that provides the full pathname of the source file containing the line of code that failed, suitable for presenting to a user.

    returns

    a string containing the full pathname of the source file containing the line of code that caused this exception

  3. abstract val failedCodeStackDepth: Int

    The depth in the stack trace of this exception at which the line of test code that failed resides.

  4. abstract val message: Option[String]

    An optional detail message for this StackDepth exception.

  5. abstract val position: Option[Position]

    An optional source position describing the line of test code that caused this exception.

  6. abstract def severedAtStackDepth: Throwable with StackDepth

    Returns an exception of the same class with failedExceptionStackDepth set to 0 and all frames above this stack depth severed off.

    Returns an exception of the same class with failedExceptionStackDepth set to 0 and all frames above this stack depth severed off. This can be useful when working with tools (such as IDEs) that do not directly support ScalaTest. (Tools that directly support ScalaTest can use the stack depth information delivered in the StackDepth exceptions.)

Concrete Value Members

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  8. def failedCodeFileName: Option[String]

    A string that provides the filename of the line of code that failed, suitable for presenting to a user, which is taken from this exception's StackTraceElement at the depth specified by failedCodeStackDepth.

    A string that provides the filename of the line of code that failed, suitable for presenting to a user, which is taken from this exception's StackTraceElement at the depth specified by failedCodeStackDepth.

    This is a def instead of a val because exceptions are mutable: their stack trace can be changed after the exception is created. This is done, for example, by the SeveredStackTraces trait.

    returns

    a string containing the filename that caused the failed test

  9. def failedCodeFileNameAndLineNumberString: Option[String]

    A string that provides the filename and line number of the line of code that failed, suitable for presenting to a user of the failing line.

    A string that provides the filename and line number of the line of code that failed, suitable for presenting to a user of the failing line. It calls failedCodeFileName and failedCodeLineNumber to get the failing filename and line number.

    failedCodeFileName and failedCodeLineNumber will fall back to exception stack trace when Position is not avaiable, this is the reason it is a def instead of a val, because exceptions are mutable: their stack trace can be changed after the exception is created. This is done, for example, by the SeveredStackTraces trait.

    returns

    a user-presentable string containing the filename and line number that caused the failed test

  10. lazy val failedCodeFilePathnameAndLineNumberString: Option[String]

    A string that provides the absolute filename and line number of the line of code that failed, suitable for presenting to a user of the failing line.

    A string that provides the absolute filename and line number of the line of code that failed, suitable for presenting to a user of the failing line. It calls failedCodeFilePathname and failedCodeLineNumber to get the failing absolute filename and line number.

    returns

    a user-presentable string containing the absolute filename and line number that caused the failed test

  11. def failedCodeLineNumber: Option[Int]

    A string that provides the line number of the line of code that failed, suitable for presenting to a user, which is taken from this exception's StackTraceElement at the depth specified by failedCodeStackDepth.

    A string that provides the line number of the line of code that failed, suitable for presenting to a user, which is taken from this exception's StackTraceElement at the depth specified by failedCodeStackDepth.

    This is a def instead of a val because exceptions are mutable: their stack trace can be changed after the exception is created. This is done, for example, by the SeveredStackTraces trait.

    returns

    a string containing the line number that caused the failed test

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