fun <K, V, T : Entry<K, V>> Expect<T>.isKeyValue(key: K, value: V): Expect<T> (source)Expects that the property Map.Entry.key of the subject of this expectation
is equal to the given key and the property Map.Entry.value is equal to the given value.
Kind of a shortcut for and { key { toEqual(key) }; value { toEqual(value) } } where and denotes an
expectation group block.
Yet, the actual behaviour depends on implementation - could also be fail fast for instance or augment reporting etc.
expect(mapOf(1 to "a").entries.first()).toEqualKeyValue(1, "a")
fails {
expect(mapOf(1 to "a").entries.first()).toEqualKeyValue(1, "b")
}Return
an Expect for the subject of this expectation.