kotlin-fork/compiler/testData/diagnostics/testsWithStdLib/contracts/fromStdlib/check.kt

// !LANGUAGE: +ReturnsEffect
// !DIAGNOSTICS: -INVISIBLE_REFERENCE -INVISIBLE_MEMBER

fun testCheckSmartcast(x: Any?) {
    check(x is String)
    <!DEBUG_INFO_SMARTCAST!>x<!>.length
}

fun testCheckUnreachableCode() {
    check(false)
    // Can't be reported without notion of 'iff'
    println("Can't get here!")
}

fun testCheckWithMessage(x: Any?) {
    check(x is String) { "x is not String!" }
    <!DEBUG_INFO_SMARTCAST!>x<!>.length
}

fun testCheckWithFailingMessage(x: Any?) {
    check(x is String) { throw kotlin.IllegalStateException("What a strange idea") }
    <!DEBUG_INFO_SMARTCAST!>x<!>.length
}

fun tesCheckNotNullWithMessage(x: Int?) {
    checkNotNull(x) { "x is null!"}
    <!DEBUG_INFO_SMARTCAST!>x<!>.inc()
}