atrium-api-fluent/ch.tutteli.atrium.api.fluent.en_GB/toContainKey

toContainKey

fun <K, T : Map<out K, *>> Expect<T>.toContainKey(key: K): Expect<T>(source)

Expects that the subject of this expectation (a Map) contains the given key.

Return

an Expect for the subject of this expectation.

Since

0.17.0

Samples

expect(mapOf(1 to "a")).toContainKey(1)

fails { // because the map does not contain a key that equals 2
    expect(mapOf(1 to "a")).toContainKey(2)
}