blob: 734f797b92440afd6f50a56ab0201f21bfbed37e [file] [log] [blame]
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'package:analyzer/src/error/codes.dart';
import 'package:test_reflective_loader/test_reflective_loader.dart';
import '../dart/resolution/context_collection_resolution.dart';
main() {
defineReflectiveSuite(() {
defineReflectiveTests(UnnecessaryTypeCheckFalseTest);
defineReflectiveTests(UnnecessaryTypeCheckTrueTest);
});
}
@reflectiveTest
class UnnecessaryTypeCheckFalseTest extends PubPackageResolutionTest {
test_null_isNot_Null() async {
await assertErrorsInCode(r'''
var b = null is! Null;
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_FALSE, 8, 13),
]);
}
test_typeNonNullable_isNot_same() async {
await assertErrorsInCode(r'''
void f(int a) {
a is! int;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_FALSE, 18, 9),
]);
}
test_typeNonNullable_isNot_subtype() async {
await assertNoErrorsInCode(r'''
void f(num a) {
a is! int;
}
''');
}
test_typeNonNullable_isNot_supertype() async {
await assertErrorsInCode(r'''
void f(int a) {
a is! num;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_FALSE, 18, 9),
]);
}
test_typeNullable_isNot_same() async {
await assertErrorsInCode(r'''
void f(int? a) {
a is! int?;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_FALSE, 19, 10),
]);
}
test_typeNullable_isNot_same_nonNullable() async {
await assertNoErrorsInCode(r'''
void f(int? a) {
a is! int;
}
''');
}
test_typeNullable_isNot_subtype() async {
await assertNoErrorsInCode(r'''
void f(num? a) {
a is! int?;
}
''');
}
test_typeNullable_isNot_subtype_nonNullable() async {
await assertNoErrorsInCode(r'''
void f(num? a) {
a is! int;
}
''');
}
test_typeNullable_isNot_supertype() async {
await assertErrorsInCode(r'''
void f(int? a) {
a is! num?;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_FALSE, 19, 10),
]);
}
test_typeNullable_isNot_supertype_nonNullable() async {
await assertNoErrorsInCode(r'''
void f(int? a) {
a is! num;
}
''');
}
test_typeParameter_isNot_dynamic() async {
await assertErrorsInCode(r'''
void f<T>(T a) {
a is! dynamic;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_FALSE, 19, 13),
]);
}
test_typeParameter_isNot_object() async {
await assertNoErrorsInCode(r'''
void f<T>(T a) {
a is! Object;
}
''');
}
test_typeParameter_isNot_objectQuestion() async {
await assertErrorsInCode(r'''
void f<T>(T a) {
a is! Object?;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_FALSE, 19, 13),
]);
}
}
@reflectiveTest
class UnnecessaryTypeCheckTrueTest extends PubPackageResolutionTest {
test_expressionInvalidType() async {
await assertErrorsInCode(r'''
void f(A a) {
a is num;
}
''', [
error(CompileTimeErrorCode.UNDEFINED_CLASS, 7, 1),
]);
}
test_null_is_Null() async {
await assertErrorsInCode(r'''
var b = null is Null;
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 8, 12),
]);
}
test_type_is_dynamic() async {
await assertErrorsInCode(r'''
void f(int a) {
a is dynamic;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 18, 12),
]);
}
test_type_is_unresolved() async {
await assertErrorsInCode(r'''
void f(int a) {
a is Unresolved;
}
''', [
error(CompileTimeErrorCode.TYPE_TEST_WITH_UNDEFINED_NAME, 23, 10),
]);
}
test_typeNonNullable_is_same() async {
await assertErrorsInCode(r'''
void f(int a) {
a is int;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 18, 8),
]);
}
test_typeNonNullable_is_subtype() async {
await assertNoErrorsInCode(r'''
void f(num a) {
a is int;
}
''');
}
test_typeNonNullable_is_supertype() async {
await assertErrorsInCode(r'''
void f(int a) {
a is num;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 18, 8),
]);
}
test_typeNullable_is_same() async {
await assertErrorsInCode(r'''
void f(int? a) {
a is int?;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 19, 9),
]);
}
test_typeNullable_is_same_nonNullable() async {
await assertNoErrorsInCode(r'''
void f(int? a) {
a is int;
}
''');
}
test_typeNullable_is_subtype() async {
await assertNoErrorsInCode(r'''
void f(num? a) {
a is int?;
}
''');
}
test_typeNullable_is_subtype_nonNullable() async {
await assertNoErrorsInCode(r'''
void f(num? a) {
a is int;
}
''');
}
test_typeNullable_is_supertype() async {
await assertErrorsInCode(r'''
void f(int? a) {
a is num?;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 19, 9),
]);
}
test_typeNullable_is_supertype_nonNullable() async {
await assertNoErrorsInCode(r'''
void f(int? a) {
a is num;
}
''');
}
test_typeParameter_is_dynamic() async {
await assertErrorsInCode(r'''
void f<T>(T a) {
a is dynamic;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 19, 12),
]);
}
test_typeParameter_is_object() async {
await assertNoErrorsInCode(r'''
void f<T>(T a) {
a is Object;
}
''');
}
test_typeParameter_is_objectQuestion() async {
await assertErrorsInCode(r'''
void f<T>(T a) {
a is Object?;
}
''', [
error(WarningCode.UNNECESSARY_TYPE_CHECK_TRUE, 19, 12),
]);
}
}