Packages

trait AppendedClues extends AnyRef

Trait providing an implicit conversion that allows clues to be placed after a block of code.

You can use the withClue construct provided by Assertions, which is extended by every style trait in ScalaTest, to add extra information to reports of failed or canceled tests. The withClue from Assertions places the "clue string" at the front, both in the code and in the resulting message:

withClue("This is a prepended clue;") {
  1 + 1 should equal (3)
}

The above expression will yield the failure message:

This is a prepended clue; 2 did not equal 3

If you mix in this trait, or import its members via its companion object, you can alternatively place the clue string at the end, like this:

{ 1 + 1 should equal (3) } withClue "now the clue comes after"

The above expression will yield the failure message:

2 did not equal 3 now the clue comes after

If no space is already present, either at the beginning of the clue string or at the end of the current message, a space will be placed between the two, unless the clue string starts with one of the punctuation characters: comma (,), period (.), or semicolon (;). For example, the failure message in the above example includes an extra space inserted between 3 and now.

By contrast this code, which has a clue string starting with comma:

{ 1 + 1 should equal (3) } withClue ", now the clue comes after"

Will yield a failure message with no extra inserted space:

2 did not equal 3, now the clue comes after

The withClue method will only append the clue string to the detail message of exception types that mix in the ModifiableMessage trait. See the documentation for ModifiableMessage for more information.

Note: the reason this functionality is not provided by Assertions directly, like the prepended withClue construct, is because appended clues require an implicit conversion. ScalaTest only gives you one implicit conversion by default in any test class to minimize the potential for conflicts with other implicit conversions you may be using. All other implicit conversions, including the one provided by this trait, you must explicitly invite into your code through inheritance or an import.

Source
AppendedClues.scala
Linear Supertypes
AnyRef, Any
Known Subclasses
AppendedClues
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. AppendedClues
  2. AnyRef
  3. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Type Members

  1. class Clueful [T] extends AnyRef

    Class that provides a withClue method that appends clue strings to any ModifiableMessage exception thrown by the passed by-name parameter.

    Class that provides a withClue method that appends clue strings to any ModifiableMessage exception thrown by the passed by-name parameter.

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. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  6. implicit def convertToClueful[T](fun: ⇒ T): Clueful[T]

    Implicit conversion that allows clues to be place after a block of code.

  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  13. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. final def notify(): Unit
    Definition Classes
    AnyRef
  15. final def notifyAll(): Unit
    Definition Classes
    AnyRef
  16. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  17. def toString(): String
    Definition Classes
    AnyRef → Any
  18. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  19. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  20. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from AnyRef

Inherited from Any

Ungrouped