doc / ch.tutteli.atrium.api.infix.en_GB / toEqualNullIfNullGivenElse

toEqualNullIfNullGivenElse

infix fun <T : Any> Expect<T?>.toEqualNullIfNullGivenElse(assertionCreatorOrNull: (Expect<T>.() -> Unit)?): Expect<T?>

(source)

Expects that the subject of this expectation is either null in case assertionCreatorOrNull is null or is not null and holds all assertions assertionCreatorOrNull creates.

expect<Int?>(null) toEqualNullIfNullGivenElse null

expect<Int?>(1) toEqualNullIfNullGivenElse { // subject inside this block is of type Int (actually 1)
    it toBeLessThan 2
} // subject here is back to type Int?

fails { // because sub-expectation fails
    expect<Int?>(1) toEqualNullIfNullGivenElse {
        it toBeLessThan 0
    }
}

Return
an Expect for the subject of this expectation.

Since
0.17.0