MustVerb
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package words
This class supports the syntax of FlatSpec, WordSpec, fixture.FlatSpec,
and fixture.WordSpec.
This class supports the syntax of FlatSpec, WordSpec, fixture.FlatSpec,
and fixture.WordSpec.
This class is used in conjunction with an implicit conversion to enable must methods to
be invoked on Strings.
Implicitly converts an object of type String to a StringMustWrapper,
to enable must methods to be invokable on that object.
Implicitly converts an object of type String to a StringMustWrapper,
to enable must methods to be invokable on that object.
Provides an implicit conversion that adds
mustmethods toStringto support the syntax ofFlatSpec,WordSpec,fixture.FlatSpec, andfixture.WordSpec.For example, this trait enables syntax such as the following test registration in
FlatSpecandfixture.FlatSpec:"A Stack (when empty)" must "be empty" in { ... } ^It also enables syntax such as the following shared test registration in
FlatSpecandfixture.FlatSpec:"A Stack (with one item)" must behave like nonEmptyStack(stackWithOneItem, lastValuePushed) ^In addition, it supports the registration of subject descriptions in
WordSpecandfixture.WordSpec, such as:"A Stack (when empty)" must { ... ^And finally, it also supportds the registration of subject descriptions with after words in
WordSpecandfixture.WordSpec. For example:def provide = afterWord("provide") "The ScalaTest Matchers DSL" must provide { ^The reason this implicit conversion is provided in a separate trait, instead of being provided directly in
FlatSpec,WordSpec,fixture.FlatSpec, andfixture.WordSpec, is because an implicit conversion provided directly would conflict with the implicit conversion that providesmustmethods onStringin theMustMatcherstrait. By contrast, there is no conflict with the separateMustVerbtrait approach, because:FlatSpec,WordSpec,fixture.FlatSpec, andfixture.WordSpecmix inMustVerbdirectly, andMustMatchersextendsMustVerb, overriding theconvertToStringMustWrapperimplicit conversion function.So whether or not a
FlatSpec,WordSpec,fixture.FlatSpec, orfixture.WordSpecmixes inMustMatchers, there will only be one implicit conversion in scope that addsmustmethods toStrings.Also, because the class of the result of the overriding
convertToStringMustWrapperimplicit conversion method provided inMustMatchersextends this trait'sStringMustWrapperForVerbclass, the four uses ofmustprovided here are still available. These fourmustare in fact available to any class that mixes inMustMatchers, but each takes an implicit parameter that is provided only inFlatSpecandfixture.FlatSpec, orWordSpecandfixture.WordSpec.