Nikolay Lunyak
fab6cec93a
This makes it more consistent and fixes some overlooked corner cases. Also it was decided on the last equality applicability DM (KT-62646) that we'd like `is`/`!is`/`as`/`as?` to work similarly to `===`/`!==`. Also note that it now gives a clearer explaination of why some corner cases work the way they do. For example, `FirPsiDiagnosticTestGenerated.testLambdaInLhsOfTypeOperatorCall` yields `UNCHECKED_CAST` instead of `CAST_NEVER_SUCCEEDS`, because `toTypeInfo()` replaces all type arguments with star projections, even when the argument is not a type parameter. This is because it has been desided to work this way in KT-57779. In `FirPsiOldFrontendDiagnosticsTestGenerated..NeverSucceeds#testNoGenericsRelated` the diagnostic is introduced, because `t2 as FC1` and `FC1` is a final class with no `T5` supertype. `UNCHECKED_CAST` in `FirPsiOldFrontendDiagnosticsTestGenerated.testSmartCast` disappeared, because previously we didn't take smartcasts into account. Note that `FirPsiOldFrontendDiagnosticsTestGenerated.testMappedSubtypes` is a false positive. It appears because `isSubtypeOf()` doesn't take into account platform types in supertypes of the given types (doesn't map them).
79 lines
1.9 KiB
Kotlin
Vendored
79 lines
1.9 KiB
Kotlin
Vendored
// !DIAGNOSTICS: -UNUSED_EXPRESSION -UNUSED_PARAMETER -UNUSED_VARIABLE -UNUSED_VALUE -VARIABLE_WITH_REDUNDANT_INITIALIZER
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// SKIP_TXT
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/*
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* KOTLIN DIAGNOSTICS NOT LINKED SPEC TEST (NEGATIVE)
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*
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* SECTIONS: dfa
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* NUMBER: 32
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* DESCRIPTION: Raw data flow analysis test
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* HELPERS: classes, objects, typealiases, functions, enumClasses, interfaces, sealedClasses
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*/
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// TESTCASE NUMBER: 1, 2, 3, 4, 5
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fun stringArg(number: String) {}
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/*
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* TESTCASE NUMBER: 1
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* UNEXPECTED BEHAVIOUR
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* ISSUES: KT-27464, KT-35668
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*/
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fun case_1(x: Int?) {
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if (x == null) {
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stringArg(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>x!!<!>)
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<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>x<!>
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}
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}
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/*
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* TESTCASE NUMBER: 2
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* UNEXPECTED BEHAVIOUR
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* ISSUES: KT-27464, KT-35668
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*/
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fun case_2(x: Int?, y: Nothing?) {
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if (x == y) {
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stringArg(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>x!!<!>)
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<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>x<!>
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}
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}
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/*
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* TESTCASE NUMBER: 3
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* UNEXPECTED BEHAVIOUR
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* ISSUES: KT-27464
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*/
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fun case_3(x: Int?) {
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if (x == null) {
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x <!CAST_NEVER_SUCCEEDS!>as<!> Int
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stringArg(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>x<!>)
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<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>x<!>
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}
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}
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/*
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* TESTCASE NUMBER: 4
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* UNEXPECTED BEHAVIOUR
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* ISSUES: KT-27464
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*/
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fun case_4(x: Int?) {
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if (x == null) {
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x!!
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stringArg(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>x<!>)
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<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>x<!>
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}
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}
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/*
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* TESTCASE NUMBER: 5
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* UNEXPECTED BEHAVIOUR
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* ISSUES: KT-27464
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*/
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fun case_5(x: Int?) {
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if (x == null) {
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var y = x
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y!!
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stringArg(<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>y<!>)
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<!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int? & kotlin.Nothing")!>y<!>
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}
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}
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