fun <K, V : Any> keyValue(key: K, valueAssertionCreatorOrNull: (Expect<V>.() -> Unit)?): KeyWithValueCreator<K, V> (source)
Helper function to create a KeyWithValueCreator based on the given key and valueAssertionCreatorOrNull
-- allows expressing Pair<K, (Expect<V>.() -> Unit)?>.
expect(mapOf(1 to "a")) toContain keyValue(1) { // subject inside this block is of type String (actually "a")
this toEqual "a"
}
fails {
expect(mapOf(1 to "a")) toContain keyValue(1) { // subject inside this block is of type String (actually "a")
this toEqual "b" // fails because "a" is not equal to "b"
}
}