Concrete Value Members
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final
def
!=(arg0: AnyRef): Boolean
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final
def
!=(arg0: Any): Boolean
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def
##(): Int
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==(arg0: AnyRef): Boolean
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def
==(arg0: Any): Boolean
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def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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def
finalize(): Unit
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def
getClass(): Class[_]
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def
hashCode(): Int
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def
isInstanceOf[T0]: Boolean
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ne(arg0: AnyRef): Boolean
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def
notify(): Unit
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def
notifyAll(): Unit
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synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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def
wait(): Unit
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def
wait(arg0: Long, arg1: Int): Unit
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def
wait(arg0: Long): Unit
Value Members
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def
toString(): String
Inherited from AnyRef
Value Members
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final
def
!=(arg0: AnyRef): Boolean
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final
def
##(): Int
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final
def
==(arg0: AnyRef): Boolean
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def
clone(): AnyRef
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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def
finalize(): Unit
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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def
synchronized[T0](arg0: ⇒ T0): T0
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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def
wait(arg0: Long): Unit
Inherited from Any
Value Members
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!=(arg0: Any): Boolean
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def
==(arg0: Any): Boolean
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def
asInstanceOf[T0]: T0
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def
isInstanceOf[T0]: Boolean
Ungrouped
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abstract
def
apply(objectWithProperty: T): BePropertyMatchResult
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!=(arg0: AnyRef): Boolean
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def
!=(arg0: Any): Boolean
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##(): Int
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==(arg0: AnyRef): Boolean
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def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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def
finalize(): Unit
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
Trait extended by matcher objects, which may appear after the word
be
, that can match against aBoolean
property. The match will succeed if and only if theBoolean
property equalstrue
. The object containing the property, which must be of the type specified by theBePropertyMatcher
's type parameterT
, is passed to theBePropertyMatcher
'sapply
method. The result is aBePropertyMatchResult
. ABePropertyMatcher
is, therefore, a function from the specified type,T
, to aBePropertyMatchResult
.Although
BePropertyMatcher
andMatcher
represent similar concepts, they have no inheritance relationship becauseMatcher
is intended for use right aftershould
ormust
whereasBePropertyMatcher
is intended for use right afterbe
.A
BePropertyMatcher
essentially allows you to write statically typedBoolean
property assertions similar to the dynamic ones that use symbols:One good way to organize custom matchers is to place them inside one or more traits that you can then mix into the suites or specs that need them. Here's an example that includes two
BePropertyMatcher
s:Because the type parameter of these two
BePropertyMatcher
s isjava.io.File
, they can only be used with instances of that type. (The compiler will enforce this.) All they do is create aBePropertyMatchResult
whosematches
field istrue
if and only if theBoolean
property istrue
. The second field,propertyName
, is simply the string name of the property. Thefile
anddirectory
val
s create variables that can be used in matcher expressions that test whether ajava.io.File
is a file or a directory. Here's an example:These matches should succeed, but if for example the first match,
tempFile should be a (file)
, were to fail, you would get an error message like:For more information on
BePropertyMatchResult
and the meaning of its fields, please see the documentation forBePropertyMatchResult
. To understand whyBePropertyMatcher
is contravariant in its type parameter, see the section entitled "Matcher's variance" in the documentation forMatcher
.