org.scalatest.exceptions

StackDepthException

abstract class StackDepthException extends RuntimeException with StackDepth

Exception class that encapsulates information about the stack depth at which the line of code that failed resides, so that information can be presented to the user that makes it quick to find the failing line of code. (In other words, the user need not scan through the stack trace to find the correct filename and line number of the problem code.) Having a stack depth is more useful in a testing environment in which test failures are implemented as thrown exceptions, as is the case in ScalaTest's built-in suite traits.

Exceptions thrown
NullPointerException

if either messageFun, cause or failedCodeStackDepthFun is null, or Some(null).

Linear Supertypes
StackDepth, RuntimeException, Exception, Throwable, Serializable, AnyRef, Any
Known Subclasses
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  2. StackDepth
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Instance Constructors

  1. new StackDepthException(message: Option[String], cause: Option[Throwable], failedCodeStackDepth: Int)

    Constructs a StackDepthException with an optional pre-determined message, optional cause, and and failedCodeStackDepth.

    Constructs a StackDepthException with an optional pre-determined message, optional cause, and and failedCodeStackDepth. (This was the primary constructor form prior to ScalaTest 1.5.)

    message

    an optional detail message for this StackDepthException.

    cause

    an optional cause, the Throwable that caused this StackDepthException to be thrown.

    failedCodeStackDepth

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

    Exceptions thrown
    NullPointerException

    if either message of cause is null, or Some(null).

  2. new StackDepthException(message: Option[String], cause: Option[Throwable], failedCodeStackDepthFun: (StackDepthException) ⇒ Int)

    Constructs a StackDepthException with an optional pre-determined message, optional cause, and a failedCodeStackDepth function.

    Constructs a StackDepthException with an optional pre-determined message, optional cause, and a failedCodeStackDepth function.

    message

    an optional detail message for this StackDepthException.

    cause

    an optional cause, the Throwable that caused this StackDepthException to be thrown.

    failedCodeStackDepthFun

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

    Exceptions thrown
    NullPointerException

    if either message or cause is null or Some(null), or failedCodeStackDepthFun is null.

  3. new StackDepthException(messageFun: (StackDepthException) ⇒ Option[String], cause: Option[Throwable], failedCodeStackDepthFun: (StackDepthException) ⇒ Int)

    messageFun

    a function that produces an optional detail message for this StackDepthException.

    cause

    an optional cause, the Throwable that caused this StackDepthException to be thrown.

    failedCodeStackDepthFun

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

    Exceptions thrown
    NullPointerException

    if either messageFun, cause or failedCodeStackDepthFun is null, or Some(null).

Abstract Value Members

  1. 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.)

    Definition Classes
    StackDepth

Concrete Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any
  3. final def ##(): Int

    Definition Classes
    AnyRef → Any
  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any
  6. final def asInstanceOf[T0]: T0

    Definition Classes
    Any
  7. def canEqual(other: Any): Boolean

    Indicates whether this object can be equal to the passed object.

  8. val cause: Option[Throwable]

    an optional cause, the Throwable that caused this StackDepthException to be thrown.

    an optional cause, the Throwable that caused this StackDepthException to be thrown.

    Definition Classes
    StackDepthExceptionStackDepth
  9. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()
  10. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  11. def equals(other: Any): Boolean

    Indicates whether this object is equal to the passed object.

    Indicates whether this object is equal to the passed object. If the passed object is a StackDepthException, equality requires equal message, cause, and failedCodeStackDepth fields, as well as equal return values of getStackTrace.

    Definition Classes
    StackDepthException → AnyRef → Any
  12. 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

    Definition Classes
    StackDepth
  13. 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, which is taken from this exception's StackTraceElement at the depth specified by failedCodeStackDepth.

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

    Definition Classes
    StackDepth
  14. 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

    Definition Classes
    StackDepth
  15. lazy val failedCodeStackDepth: Int

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

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

    One reason this is lazy is to delay any searching of the stack trace until it is actually needed. It will usually be needed, but not always. For example, exceptions thrown during a shrink phase of a failed property will often be StackDepthExceptions, but whose failedCodeStackDepth will never be used. Another reason is to remove the need to create a different exception before creating this one just for the purpose of searching through its stack trace for the proper stack depth. Still one more reason is to allow the message to contain information about the stack depth, such as the failed file name and line number.

    Definition Classes
    StackDepthExceptionStackDepth
  16. val failedCodeStackDepthFun: (StackDepthException) ⇒ Int

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

  17. def fillInStackTrace(): Throwable

    Definition Classes
    Throwable
  18. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws()
  19. def getCause(): Throwable

    Definition Classes
    Throwable
  20. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any
  21. def getLocalizedMessage(): String

    Definition Classes
    Throwable
  22. def getMessage(): String

    Returns the detail message string of this StackDepthException.

    Returns the detail message string of this StackDepthException.

    returns

    the detail message string of this StackDepthException instance (which may be null).

    Definition Classes
    StackDepthException → Throwable
  23. def getStackTrace(): Array[StackTraceElement]

    Definition Classes
    Throwable
  24. def hashCode(): Int

    Returns a hash code value for this object.

    Returns a hash code value for this object.

    Definition Classes
    StackDepthException → AnyRef → Any
  25. final def initCause(throwable: Throwable): Throwable

    Definition Classes
    StackDepthException → Throwable
  26. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any
  27. lazy val message: Option[String]

    An optional detail message for this StackDepth exception.

    An optional detail message for this StackDepth exception.

    One reason this is lazy is to delay any searching of the stack trace until it is actually needed. It will usually be needed, but not always. For example, exceptions thrown during a shrink phase of a failed property will often be StackDepthExceptions, but whose message will never be used. Another related reason is to remove the need to create a different exception before creating this one just for the purpose of searching through its stack trace for the proper stack depth. Still one more reason is to allow the message to contain information about the stack depth, such as the failed file name and line number.

    Definition Classes
    StackDepthExceptionStackDepth
  28. val messageFun: (StackDepthException) ⇒ Option[String]

    a function that produces an optional detail message for this StackDepthException.

  29. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  30. final def notify(): Unit

    Definition Classes
    AnyRef
  31. final def notifyAll(): Unit

    Definition Classes
    AnyRef
  32. def printStackTrace(arg0: PrintWriter): Unit

    Definition Classes
    Throwable
  33. def printStackTrace(arg0: PrintStream): Unit

    Definition Classes
    Throwable
  34. def printStackTrace(): Unit

    Definition Classes
    Throwable
  35. def setStackTrace(arg0: Array[StackTraceElement]): Unit

    Definition Classes
    Throwable
  36. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  37. def toString(): String

    Definition Classes
    Throwable → AnyRef → Any
  38. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  39. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()
  40. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws()

Inherited from StackDepth

Inherited from RuntimeException

Inherited from Exception

Inherited from Throwable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped