Fixes #989. Runtime type equality operator tests added

LanguageFeatures/nnbd/runtime_equality_operator_A01_t01.dart

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-strong
+import "../../Utils/expect.dart";
+
+main() {
+  int i1 = 42;
+  int i2 = 0;
+  int? i3 = 11;
+
+  Expect.equals(i1.runtimeType, i2.runtimeType);
+  Expect.equals(i1.runtimeType, i3.runtimeType);
+
+  i3 = null;
+  Expect.notEquals(i1.runtimeType, i3.runtimeType);
+}

LanguageFeatures/nnbd/runtime_equality_operator_A01_t02.dart

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-strong
+import "../../Utils/expect.dart";
+
+class C {}
+
+test<T>(T t1, T t2) {
+  List<T> l1 = [];
+  List<T?> l2 = [t1, t2];
+  Expect.equals(l1.runtimeType, l2.runtimeType);
+}
+
+main() {
+  test<int?>(1, 2);
+  test<C?>(C(), C());
+  test<Null>(null, null);
+  test<dynamic>(1, "2");
+  test<void>(1, 2);
+}

LanguageFeatures/nnbd/runtime_equality_operator_A01_t03.dart

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-strong
+import "../../Utils/expect.dart";
+
+class C {}
+
+test<T>(T t1, T t2) {
+  List<T> l1 = [];
+  List<T?> l2 = [t1, t2];
+  Expect.notEquals(l1.runtimeType, l2.runtimeType);
+}
+
+main() {
+  test<int>(1, 2);
+  test<C>(C(), C());
+}

LanguageFeatures/nnbd/runtime_equality_operator_A01_t04.dart

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-strong
+import "dart:async";
+import "../../Utils/expect.dart";
+
+test<T1, T2>() {
+  List<T1> l1 = [];
+  List<T2> l2 = [];
+  Expect.equals(l1.runtimeType, l2.runtimeType);
+}
+
+main() {
+  test<Never?, Null>();
+  test<FutureOr<dynamic>, dynamic>();
+  test<FutureOr<void>, void>();
+  test<FutureOr<Object>, Object>();
+  test<FutureOr<Object?>, Object?>();
+}

LanguageFeatures/nnbd/runtime_equality_operator_A02_t01.dart

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Note that we do not equate primitive top types. List<void> and
+ * List<dynamic> are still considered distinct runtime type objects. Note that
+ * we also do not equate Never and Null, and we do not equate function types
+ * which differ in the placement of required on parameter types.
+ *
+ * @description Checks that primitive types are not equal
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-strong
+import "../../Utils/expect.dart";
+
+test<T1, T2>() {
+  List<T1> l1 = [];
+  List<T2> l2 = [];
+  Expect.notEquals(l1.runtimeType, l2.runtimeType);
+}
+
+main() {
+  test<void, dynamic>();
+  test<Never, Null>();
+  test<void, Null>();
+  test<dynamic, Null>();
+  test<Never, dynamic>();
+  test<Object?, dynamic>();
+  test<Never, void>();
+}

LanguageFeatures/nnbd/weak/legacy_lib.dart

@@ -104,3 +104,6 @@ class F2<X extends LegacyFoo> {
 
 F1<Function> funcLegacy1 = F1<Function>(legacyFoo);
 F2<LegacyFoo> funcLegacy2 = F2<LegacyFoo>(legacyFoo);
+
+int getInt() => 42;
+T getType<T>(T t) => t;

LanguageFeatures/nnbd/weak/runtime_equality_operator_A01_t01.dart

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-weak
+import "../../../Utils/expect.dart";
+
+main() {
+  int i1 = 42;
+  int i2 = 0;
+  int? i3 = 11;
+
+  Expect.equals(i1.runtimeType, i2.runtimeType);
+  Expect.equals(i1.runtimeType, i3.runtimeType);
+
+  i3 = null;
+  Expect.notEquals(i1.runtimeType, i3.runtimeType);
+}

LanguageFeatures/nnbd/weak/runtime_equality_operator_A01_t02.dart

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-weak
+import "../../../Utils/expect.dart";
+
+class C {}
+
+test<T>(T t1, T t2) {
+  List<T> l1 = [];
+  List<T?> l2 = [t1, t2];
+  Expect.equals(l1.runtimeType, l2.runtimeType);
+}
+
+main() {
+  test<int?>(1, 2);
+  test<C?>(C(), C());
+  test<Null>(null, null);
+  test<dynamic>(1, "2");
+  test<void>(1, 2);
+}

LanguageFeatures/nnbd/weak/runtime_equality_operator_A01_t03.dart

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-weak
+import "../../../Utils/expect.dart";
+
+class C {}
+
+test<T>(T t1, T t2) {
+  List<T> l1 = [];
+  List<T?> l2 = [t1, t2];
+  Expect.notEquals(l1.runtimeType, l2.runtimeType);
+}
+
+main() {
+  test<int>(1, 2);
+  test<C>(C(), C());
+}

LanguageFeatures/nnbd/weak/runtime_equality_operator_A01_t04.dart

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-weak
+import "../../../Utils/expect.dart";
+import "dart:async";
+
+test<T1, T2>() {
+  List<T1> l1 = [];
+  List<T2> l2 = [];
+  Expect.equals(l1.runtimeType, l2.runtimeType);
+}
+
+main() {
+  test<Never?, Null>();
+  test<FutureOr<dynamic>, dynamic>();
+  test<FutureOr<void>, void>();
+  test<FutureOr<Object>, Object>();
+  test<FutureOr<Object?>, Object?>();
+}

LanguageFeatures/nnbd/weak/runtime_equality_operator_A01_t05.dart

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2021, 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.
+ */
+/**
+ * @assertion Two objects T1 and T2 which are instances of Type (that is,
+ * runtime type objects) are considered equal if and only if the runtime type
+ * objects T1 and T2 corresponds to the types S1 and S2 respectively, and the
+ * normal forms NORM(S1) and NORM(S2) are syntactically equal up to equivalence
+ * of bound variables and ignoring * modifiers on types.
+ *
+ * @description Checks that runtime type of objects T1 and T2 are equal if and
+ * only if the runtime type objects T1 and T2 corresponds to the types S1 and S2
+ * respectively, and the normal forms NORM(S1) and NORM(S2) are syntactically
+ * equal
+ *
+ * @author sgrekhov@unipro.ru
+ */
+// Requirements=nnbd-weak
+import "../../../Utils/expect.dart";
+import "legacy_lib.dart";
+
+main() {
+  var v1 = getInt();
+  int v2 = 0;
+  Expect.equals(v1.runtimeType, v2.runtimeType);
+
+  var v3 = getType<int?>(42);
+  int? v4 = 0;
+  Expect.equals(v3.runtimeType, v4.runtimeType);
+  v4 = null;
+  Expect.notEquals(v3.runtimeType, v4.runtimeType);
+  v3 = null;
+  Expect.equals(v3.runtimeType, v4.runtimeType);
+
+  var v5 = getType<int>(42);
+  int v6 = 0;
+  Expect.equals(v5.runtimeType, v6.runtimeType);
+
+  var v7 = getType<dynamic>(42);
+  dynamic v8 = 0;
+  Expect.equals(v7.runtimeType, v8.runtimeType);
+}