ScalaTest 1.0
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org/scalatest/verb/MustVerb.scala
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trait
MustVerb
extends
AnyRefmust
methods to String
to support the syntax of FlatSpec
, WordSpec
, FixtureFlatSpec
,
and FixtureWordSpec
.
For example, this trait enables syntax such as the following test registration in FlatSpec
and FixtureFlatSpec
:
"A Stack (when empty)" must "be empty" in { ... } ^
It also enables syntax such as the following shared test registration in FlatSpec
and FixtureFlatSpec
:
"A Stack (with one item)" must behave like nonEmptyStack(stackWithOneItem, lastValuePushed) ^
In addition, it supports the registration of subject descriptions in WordSpec
and FixtureWordSpec
, such as:
"A Stack (when empty)" must { ... ^
And finally, it also supportds the registration of subject descriptions with after words
in WordSpec
and FixtureWordSpec
. 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
, FixtureFlatSpec
, and
FixtureWordSpec
, 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
, FixtureFlatSpec
, and FixtureWordSpec
mix in MustVerb
directly, andMustMatchers
extends MustVerb
, overriding the
convertToStringMustWrapper
implicit conversion function.
So whether or not
a FlatSpec
, WordSpec
, FixtureFlatSpec
, or FixtureWordSpec
mixes in MustMatchers
, there will only be one
implicit conversion in scope that adds must
methods to String
s.
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 FixtureFlatSpec
, or WordSpec
and
FixtureWordSpec
.
Method Summary | |
implicit def
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convertToStringMustWrapper
(o : java.lang.String) : StringMustWrapperForVerb
Implicitly converts an object of type
String to a StringMustWrapper ,
to enable must methods to be invokable on that object. |
Methods inherited from AnyRef | |
getClass, hashCode, equals, clone, toString, notify, notifyAll, wait, wait, wait, finalize, ==, !=, eq, ne, synchronized |
Methods inherited from Any | |
==, !=, isInstanceOf, asInstanceOf |
Class Summary | |
class
|
StringMustWrapperForVerb
(left : java.lang.String) extends AnyRef
This class supports the syntax of
FlatSpec , WordSpec , FixtureFlatSpec ,
and FixtureWordSpec . |
Method Details |
implicit
def
convertToStringMustWrapper(o : java.lang.String) : StringMustWrapperForVerb
String
to a StringMustWrapper
,
to enable must
methods to be invokable on that object.
ScalaTest 1.0
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