org.scalatest.matchers.ClassicMatchers
This method enables the following syntax:
This method enables the following syntax:
Array(1, 2) should (contain (2) and contain (1))
^
This method enables the following syntax:
This method enables the following syntax:
map should (contain key ("fifty five") or contain key ("twenty two"))
^
The map's value type parameter cannot be inferred because only a key type is provided in
an expression like (contain key ("fifty five")). The matcher returned
by this method matches scala.collection.Maps with the inferred key type and value type Any. Given
Map is covariant in its value type, and Matcher is contravariant in
its type parameter, a Matcher[Map[Int, Any]], for example, is a subtype of Matcher[Map[Int, String]].
This will enable the matcher returned by this method to be used against any Map that has
the inferred key type.
This method enables the following syntax:
This method enables the following syntax:
Map("one" -> 1, "two" -> 2) should (not contain value (5) and not contain value (3))
^
The map's key type parameter cannot be inferred because only a value type is provided in
an expression like (contain value (5)). The matcher returned
by this method matches scala.collection.Maps with the inferred value type and the existential key
type [K] forSome { type K }. Even though Matcher is contravariant in its type parameter, because
Map is nonvariant in its key type,
a Matcher[Map[Any, Int]], for example, is not a subtype of Matcher[Map[String, Int]],
so the key type parameter of the Map returned by this method cannot be Any. By making it
an existential type, the Scala compiler will not infer it to anything more specific.
This will enable the matcher returned by this method to be used against any Map that has
the inferred value type.
This class is part of the ScalaTest matchers DSL. Please see the documentation for
ShouldMatchersorMustMatchersfor an overview of the matchers DSL.