trait Aggregating[-A] extends AnyRef
Typeclass that enables for aggregations certain contain
syntax in the ScalaTest matchers DSL.
An Aggregating[A]
provides access to the "aggregating nature" of type A
in such
a way that relevant contain
matcher syntax can be used with type A
. An A
can be any type of aggregation—an object that in some way aggregates or brings together other objects. ScalaTest provides
implicit implementations for several types out of the box in the
Aggregating
companion object:
scala.collection.GenTraversable
String
Array
java.util.Collection
java.util.Map
The contain
syntax enabled by this trait is:
result
should
contain
atLeastOneOf
(1, 2, 3)
result
should
contain
atMostOneOf
(1, 2, 3)
result
should
contain
only
(1, 2, 3)
result
should
contain
allOf
(1, 2, 3)
result
should
contain
theSameElementsAs
(List(1, 2, 3))
You can enable the contain
matcher syntax enabled by Aggregating
on your own
type U
by defining an Aggregating[U]
for the type and making it available implicitly.
Note, for an explanation of the difference between Containing
and Aggregating
, both of which
enable contain
matcher syntax, see the Containing
versus Aggregating section of the main documentation for trait Containing
.
- Source
- Aggregating.scala
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Abstract Value Members
- abstract def containsAllOf(aggregation: A, eles: Seq[Any]): Boolean
Implements
contain
allOf
syntax for aggregations of typeA
.Implements
contain
allOf
syntax for aggregations of typeA
.- aggregation
an aggregation about which an assertion is being made
- eles
elements all of which should be contained in the passed aggregation
- returns
true if the passed aggregation contains all of the passed elements
- abstract def containsAtLeastOneOf(aggregation: A, eles: Seq[Any]): Boolean
Implements
contain
atLeastOneOf
syntax for aggregations of typeA
.Implements
contain
atLeastOneOf
syntax for aggregations of typeA
.- aggregation
an aggregation about which an assertion is being made
- eles
elements at least one of which should be contained in the passed aggregation
- returns
true if the passed aggregation contains at least one of the passed elements
- abstract def containsAtMostOneOf(aggregation: A, eles: Seq[Any]): Boolean
Implements
contain
atMostOneOf
syntax for aggregations of typeA
.Implements
contain
atMostOneOf
syntax for aggregations of typeA
.- aggregation
an aggregation about which an assertion is being made
- eles
elements at most one of which should be contained in the passed aggregation
- returns
true if the passed aggregation contains at most one of the passed elements
- abstract def containsOnly(aggregation: A, eles: Seq[Any]): Boolean
Implements
contain
only
syntax for aggregations of typeA
.Implements
contain
only
syntax for aggregations of typeA
.- aggregation
an aggregation about which an assertion is being made
- eles
the only elements that should be contained in the passed aggregation
- returns
true if the passed aggregation contains only the passed elements
- abstract def containsTheSameElementsAs(leftAggregation: A, rightAggregation: GenTraversable[Any]): Boolean
Implements
contain
theSameElementsAs
syntax for aggregations of typeA
.Implements
contain
theSameElementsAs
syntax for aggregations of typeA
.- leftAggregation
an aggregation about which an assertion is being made
- rightAggregation
an aggregation that should contain the same elements as the passed
leftAggregation
- returns
true if the passed
leftAggregation
contains the same elements as the passedrightAggregation
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