object MatcherProducers extends MatcherProducers
Companion object that facilitates the importing of MatcherProducers members as
an alternative to mixing it in. One use case is to import MatcherProducers's members so you can use
MatcherProducers in the Scala interpreter.
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- MatcherProducers.scala
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- class Composifier[T] extends AnyRef
Class used via an implicit conversion that adds
composeTwice,mapResult, andmapArgsmethods to functions that produce aMatcher.Class used via an implicit conversion that adds
composeTwice,mapResult, andmapArgsmethods to functions that produce aMatcher.- Definition Classes
- MatcherProducers
Value Members
- final def !=(arg0: Any): Boolean
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- final def ##: Int
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- final def ==(arg0: Any): Boolean
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- final def asInstanceOf[T0]: T0
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- protected[lang]
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- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- implicit def convertToComposifier[T](f: (T) => Matcher[T]): Composifier[T]
Implicit conversion that converts a function of
T => Matcher[T]to an object that hascomposeTwice,mapResultandmapArgsmethods.Implicit conversion that converts a function of
T => Matcher[T]to an object that hascomposeTwice,mapResultandmapArgsmethods.The following shows how this trait is used to compose twice and modify error messages:
import org.scalatest._ import matchers._ import MatcherProducers._
val f = be > (_: Int) val g = (_: String).toInt
// f composeTwice g means: (f compose g) andThen (_ compose g) val beAsIntsGreaterThan = f composeTwice g mapResult { mr => mr.copy( failureMessageArgs = mr.failureMessageArgs.map((LazyArg(_) { "\"" + _.toString + "\".toInt"})), negatedFailureMessageArgs = mr.negatedFailureMessageArgs.map((LazyArg(_) { "\"" + _.toString + "\".toInt"})), midSentenceFailureMessageArgs = mr.midSentenceFailureMessageArgs.map((LazyArg(_) { "\"" + _.toString + "\".toInt"})), midSentenceNegatedFailureMessageArgs = mr.midSentenceNegatedFailureMessageArgs.map((LazyArg(_) { "\"" + _.toString + "\".toInt"})) ) }
"7" should beAsIntsGreaterThan ("8")The last assertion will fail with message like this:
"7".toInt was not greater than "8".toInt
- T
the type used by function
f- f
a function that takes a
Tand return aMatcher[T]- returns
an object that has
composeTwice,mapResultandmapArgsmethods.
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- MatcherProducers
- final def eq(arg0: AnyRef): Boolean
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- def equals(arg0: AnyRef): Boolean
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- def finalize(): Unit
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- def toString(): String
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