empty

Represents a helper construct which allows expressing emptiness. It can be used for a parameterless function so that it has one parameter and thus can be used as infix function.

expect("") toBe empty

fails {
    expect("XYZ") toBe empty
}

expect(listOf(1, 2, 3)) notToBe empty

fails {
    expect(listOf<Int>()) notToBe empty
}