trait MustVerb extends AnyRef
Provides an implicit conversion that adds must
methods to String
to support the syntax of FlatSpec
, WordSpec
, fixture.FlatSpec
,
and fixture.WordSpec
.
For example, this trait enables syntax such as the following test registration in FlatSpec
and fixture.FlatSpec
:
"A Stack (when empty)" must "be empty" in { ... } ^
It also enables syntax such as the following shared test registration in FlatSpec
and fixture.FlatSpec
:
"A Stack (with one item)" must behave like nonEmptyStack(stackWithOneItem, lastValuePushed)
^
In addition, it supports the registration of subject descriptions in WordSpec
and fixture.WordSpec
, such as:
"A Stack (when empty)" must { ...
^
And finally, it also supportds the registration of subject descriptions with after words
in WordSpec
and fixture.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
, and
fixture.WordSpec
, is because an implicit conversion provided directly would conflict
with the implicit conversion that provides must
methods on String
in the MustMatchers
trait. By contrast, there is no conflict with
the separate MustVerb
trait approach, because:
FlatSpec
,WordSpec
,fixture.FlatSpec
, andfixture.WordSpec
mix inMustVerb
directly, andMustMatchers
extendsMustVerb
, overriding theconvertToStringMustWrapper
implicit conversion function.
So whether or not
a FlatSpec
, WordSpec
, fixture.FlatSpec
, or fixture.WordSpec
mixes in MustMatchers
, there will only be one
implicit conversion in scope that adds must
methods to String
s.
Also, because the class of the result of the overriding convertToStringMustWrapper
implicit conversion method provided in MustMatchers
extends this trait's
StringMustWrapperForVerb
class, the four uses of must
provided here
are still available. These four must
are in fact available to any class
that mixes in MustMatchers
, but each takes an implicit parameter that is provided
only in FlatSpec
and fixture.FlatSpec
, or WordSpec
and
fixture.WordSpec
.
- Source
- MustVerb.scala
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Type Members
- trait StringMustWrapperForVerb extends AnyRef
This class supports the syntax of
FlatSpec
,WordSpec
,fixture.FlatSpec
, andfixture.WordSpec
.This class supports the syntax of
FlatSpec
,WordSpec
,fixture.FlatSpec
, andfixture.WordSpec
.This class is used in conjunction with an implicit conversion to enable
must
methods to be invoked onString
s.
Value Members
- final def !=(arg0: Any): Boolean
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- implicit def convertToStringMustWrapperForVerb(o: String)(implicit position: Position): StringMustWrapperForVerb
Implicitly converts an object of type
String
to aStringMustWrapper
, to enablemust
methods to be invokable on that object. - final def eq(arg0: AnyRef): Boolean
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