Perform override and inheritance checks.

tests/compiler/dart2js/override_inheritance_test.dart

+// Copyright (c) 2013, 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:expect/expect.dart";
+
+import "compiler_helper.dart";
+
+main() {
+  testMoreRequiredParameters();
+  testFewerPositionalParameters();
+  testNotAllNamedParameters();
+  testNotSubtype();
+  testGetterNotSubtype();
+  testSetterNotSubtype();
+  testGenericNotSubtype();
+  testFieldNotSubtype();
+  testMixedOverride();
+  testAbstractMethods();
+  testNoSuchMethod();
+}
+
+check(String source, {errors, warnings, hints, infos}) {
+  MockCompiler compiler = new MockCompiler();
+  compiler.diagnosticHandler = createHandler(compiler, source);
+  compiler.parseScript(source);
+  var cls = compiler.mainApp.find('Class');
+  cls.ensureResolved(compiler);
+
+  if (errors == null) errors = [];

[karlklose, 2014/01/28 12:27:45]

Consider adding a helper like
  toList(o) => o == null ? [] : o is List ? o : [o];
for use with compareMessageKinds.

[Johnni Winther, 2014/01/31 12:29:30]

Done.

+  if (errors is! List) errors = [errors];
+  compareMessageKinds(source, errors, compiler.errors, 'error');
+
+  if (warnings == null) warnings = [];
+  if (warnings is! List) warnings = [warnings];
+  compareMessageKinds(source, warnings, compiler.warnings, 'warning');
+
+  if (infos != null) {
+    if (infos is! List) infos = [infos];
+    compareMessageKinds(source, infos, compiler.infos, 'info');
+  }
+
+  if (hints != null) {
+    if (hints is! List) hints = [hints];
+    compareMessageKinds(source, hints, compiler.hints, 'hint');
+  }
+}
+
+testMoreRequiredParameters() {

[karlklose, 2014/01/28 12:27:45]

This method is also testing equal numbers of required parameters, as is the next
one.

Consider renaming the test methods.

[Johnni Winther, 2014/01/31 12:29:30]

Done.

+  check("""
+        class A {
+          method() => null; // testMoreRequiredParameters:0
+        }
+        class Class extends A {
+          method() => null; // testMoreRequiredParameters:1
+        }
+        """);
+
+  check("""
+        class A {
+          method(a) => null; // testMoreRequiredParameters:2
+        }
+        class Class extends A {
+          method(b) => null; // testMoreRequiredParameters:3
+        }
+        """);
+
+  check("""
+        class A {
+          method(a, b, c, d) => null; // testMoreRequiredParameters:3
+        }
+        class Class extends A {
+          method(b, a, d, c) => null; // testMoreRequiredParameters:4
+        }
+        """);
+
+  check("""
+        class A {
+          method() => null; // testMoreRequiredParameters:5
+        }
+        class Class extends A {
+          method(a) => null; // testMoreRequiredParameters:6
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method() => null; // testMoreRequiredParameters:7
+        }
+        class Class implements A {
+          method(a) => null; // testMoreRequiredParameters:8
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method(a, b, c) => null; // testMoreRequiredParameters:9
+        }
+        class Class extends A {
+          method(a, b, c, d) => null; // testMoreRequiredParameters:10
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+}
+
+testFewerPositionalParameters() {
+  check("""
+        class A {
+          method([a]) => null; // testFewerPositionalParameters:1
+        }
+        class Class extends A {
+          method([a]) => null; // testFewerPositionalParameters:2
+        }
+        """);
+
+  check("""
+        class A {
+          method([a, b]) => null; // testFewerPositionalParameters:3
+        }
+        class Class extends A {
+          method([b, a]) => null; // testFewerPositionalParameters:4
+        }
+        """);
+
+  check("""
+        class A {
+          method([a, b, c]) => null; // testFewerPositionalParameters:5
+        }
+        class Class extends A {
+          method([b, d, a, c]) => null; // testFewerPositionalParameters:6
+        }
+        """);
+
+  check("""
+        class A {
+          method([a]) => null; // testFewerPositionalParameters:7
+        }
+        class Class extends A {
+          method([a]) => null; // testFewerPositionalParameters:8
+        }
+        """);
+
+  check("""
+        class A {
+          method(a) => null; // testFewerPositionalParameters:9
+        }
+        class Class extends A {
+          method() => null; // testFewerPositionalParameters:10
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method(a, [b]) => null; // testFewerPositionalParameters:11
+        }
+        class Class extends A {
+          method(a) => null; // testFewerPositionalParameters:12
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method(a, [b]) => null; // testFewerPositionalParameters:13
+        }
+        class Class extends A {
+          method([a]) => null; // testFewerPositionalParameters:14
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method(a, b, [c, d, e]) => null; // testFewerPositionalParameters:15
+        }
+        class Class extends A {
+          method([a, b, c, d]) => null; // testFewerPositionalParameters:16
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+}
+
+testNotAllNamedParameters() {
+  check("""
+        class A {
+          method({a}) => null; // testNotAllNamedParameters:1
+        }
+        class Class extends A {
+          method({a}) => null; // testNotAllNamedParameters:2
+        }
+        """);
+
+  check("""
+        class A {
+          method({a, b}) => null; // testNotAllNamedParameters:3
+        }
+        class Class extends A {
+          method({b, a}) => null; // testNotAllNamedParameters:4
+        }
+        """);
+
+  check("""
+        class A {
+          method({a, b, c}) => null; // testNotAllNamedParameters:5
+        }
+        class Class extends A {
+          method({b, c, a, d}) => null; // testNotAllNamedParameters:6
+        }
+        """);
+
+  check("""
+        class A {
+          method(d, {a, b, c}) => null; // testNotAllNamedParameters:7
+        }
+        class Class extends A {
+          method(e, {b, c, a, d}) => null; // testNotAllNamedParameters:8
+        }
+        """);
+
+  check("""
+        class A {
+          method({a}) => null; // testNotAllNamedParameters:9
+        }
+        class Class extends A {
+          method() => null; // testNotAllNamedParameters:10
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method({a, b}) => null; // testNotAllNamedParameters:11
+        }
+        class Class extends A {
+          method({b}) => null; // testNotAllNamedParameters:12
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method({a, b, c, d}) => null; // testNotAllNamedParameters:13
+        }
+        class Class extends A {
+          method({a, e, d, c}) => null; // testNotAllNamedParameters:14
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+}
+
+testNotSubtype() {

[karlklose, 2014/01/28 12:27:45]

This method also tests the positive test. Consider renaming it to testSubtyping.

[Johnni Winther, 2014/01/31 12:29:30]

Done.

+  check("""
+        class A {
+          method(int a) => null; // testNotSubtype:1
+        }
+        class Class extends A {
+          method(int a) => null; // testNotSubtype:2
+        }
+        """);
+
+  check("""
+        class A {
+          method(int a) => null; // testNotSubtype:3
+        }
+        class Class extends A {
+          method(num a) => null; // testNotSubtype:4
+        }
+        """);
+
+  check("""
+        class A {
+          void method() {} // testNotSubtype:5
+        }
+        class Class extends A {
+          method() => null; // testNotSubtype:6
+        }
+        """);
+
+  check("""
+        class A {
+          method() => null; // testNotSubtype:7
+        }
+        class Class extends A {
+          void method() {} // testNotSubtype:8
+        }
+        """);
+
+  check("""
+        class A {
+          void method() {} // testNotSubtype:9
+        }
+        class Class extends A {
+          int method() => null; // testNotSubtype:10
+        }
+        """);
+
+  check("""
+        class A {
+          int method() => null; // testNotSubtype:11
+        }
+        class Class extends A {
+          void method() {} // testNotSubtype:12
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A {
+          method(int a) => null; // testNotSubtype:13
+        }
+        class B extends A {
+          method(num a) => null; // testNotSubtype:14
+        }
+        class Class extends B {
+          method(double a) => null; // testNotSubtype:15
+        }
+        """);
+
+  check("""
+        class A {
+          method(int a) => null; // testNotSubtype:16
+        }
+        class B extends A {
+          method(a) => null; // testNotSubtype:17
+        }
+        class Class extends B {
+          method(String a) => null; // testNotSubtype:18
+        }
+        """);
+
+  check("""
+        class A {
+          method(int a) => null; // testNotSubtype:19
+        }
+        class Class extends A {
+          method(String a) => null; // testNotSubtype:20
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""

[karlklose, 2014/01/28 12:27:45]

I would argue that 'inherited(C, _)' contains 'method: (dynamic) -> dynamic' and
thus there is no warning because we check 'Class.method' against that.

Could you file a bug for Gilad to clarify and add a comment here.

[Johnni Winther, 2014/01/31 12:29:30]

Done.

+        class A {
+          method(int a) => null; // testNotSubtype:23
+        }
+        class B {
+          method(num a) => null; // testNotSubtype:24
+        }
+        abstract class C implements A, B {
+        }
+        class Class implements C {
+          method(double a) => null; // testNotSubtype:25
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""

[karlklose, 2014/01/28 12:27:45]

Ditto.

[Johnni Winther, 2014/01/31 12:29:30]

Done.

+        class A {
+          method(int a) => null; // testNotSubtype:26
+        }
+        class B {
+          method(num a) => null; // testNotSubtype:27
+        }
+        abstract class C implements A, B {
+        }
+        class Class implements C {
+          method(String a) => null; // testNotSubtype:28
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_METHOD,
+                        MessageKind.INVALID_OVERRIDE_METHOD],
+             infos: [MessageKind.INVALID_OVERRIDDEN_METHOD,
+                     MessageKind.INVALID_OVERRIDDEN_METHOD]);
+
+  check("""

[karlklose, 2014/01/28 12:27:45]

Move this up after l. 357 (it is just testing a symmetric case, isn't it?)

[Johnni Winther, 2014/01/31 12:29:30]

Done.

+        class A {
+          method(num a) => null; // testNotSubtype:29
+        }
+        class B {
+          method(int a) => null; // testNotSubtype:30
+        }
+        abstract class C implements A, B {
+        }
+        class Class implements C {
+          method(double a) => null; // testNotSubtype:31
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+}
+
+testGetterNotSubtype() {
+  check("""
+        class A {
+          get getter => null; // testGetterNotSubtype:1
+        }
+        class Class extends A {
+          get getter => null; // testGetterNotSubtype:2
+        }
+        """);
+
+  check("""
+        class A {
+          num get getter => null; // testGetterNotSubtype:3
+        }
+        class Class extends A {
+          num get getter => null; // testGetterNotSubtype:4
+        }
+        """);
+
+  check("""
+        class A {
+          num get getter => null; // testGetterNotSubtype:5
+        }
+        class Class extends A {
+          int get getter => null; // testGetterNotSubtype:6
+        }
+        """);
+
+  check("""
+        class A {
+          int get getter => null; // testGetterNotSubtype:7
+        }
+        class Class extends A {
+          num get getter => null; // testGetterNotSubtype:8
+        }
+        """);
+
+  check("""
+        class A {
+          int get getter => null; // testGetterNotSubtype:9
+        }
+        class Class extends A {
+          double get getter => null; // testGetterNotSubtype:10
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_GETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_GETTER);
+
+  check("""
+        class A {
+          int get getter => null; // testGetterNotSubtype:11
+        }
+        class B extends A {
+          num get getter => null; // testGetterNotSubtype:12
+        }
+        class Class extends B {
+          double get getter => null; // testGetterNotSubtype:13
+        }
+        """);
+
+  check("""
+        class A {
+          int get getter => null; // testGetterNotSubtype:14
+        }
+        class B {
+          num get getter => null; // testGetterNotSubtype:15
+        }
+        class Class extends A implements B {
+          double get getter => null; // testGetterNotSubtype:16
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_GETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_GETTER);
+
+  check("""
+        class A {
+          int get getter => null; // testGetterNotSubtype:17
+        }
+        class B {
+          String get getter => null; // testGetterNotSubtype:18
+        }
+        class Class extends A implements B {
+          double get getter => null; // testGetterNotSubtype:19
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_GETTER,
+                        MessageKind.INVALID_OVERRIDE_GETTER],
+             infos: [MessageKind.INVALID_OVERRIDDEN_GETTER,
+                     MessageKind.INVALID_OVERRIDDEN_GETTER]);
+
+  check("""
+        class A {
+          int get getter => null; // testGetterNotSubtype:20
+        }
+        class B {
+          String get getter => null; // testGetterNotSubtype:21
+        }
+        class Class implements A, B {
+          double get getter => null; // testGetterNotSubtype:22
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_GETTER,
+                        MessageKind.INVALID_OVERRIDE_GETTER],
+             infos: [MessageKind.INVALID_OVERRIDDEN_GETTER,
+                     MessageKind.INVALID_OVERRIDDEN_GETTER]);
+
+  check("""
+        class A {
+          int get getter => null; // testGetterNotSubtype:23
+        }
+        class B {
+          num get getter => null; // testGetterNotSubtype:24
+        }
+        abstract class C implements A, B {
+        }
+        class Class implements C {
+          double get getter => null; // testGetterNotSubtype:25
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_GETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_GETTER);
+
+  check("""

[karlklose, 2014/01/28 12:27:45]

Also add a TODO to wait for clarification from Gilad.

[Johnni Winther, 2014/01/31 12:29:30]

Done.

+        class A {
+          int get getter => null; // testGetterNotSubtype:26
+        }
+        class B {
+          num get getter => null; // testGetterNotSubtype:27
+        }
+        abstract class C implements A, B {
+        }
+        class Class implements C {
+          String get getter => null; // testGetterNotSubtype:28
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_GETTER,
+                        MessageKind.INVALID_OVERRIDE_GETTER],
+             infos: [MessageKind.INVALID_OVERRIDDEN_GETTER,
+                     MessageKind.INVALID_OVERRIDDEN_GETTER]);
+}
+
+testGenericNotSubtype() {
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:1
+        }
+        class Class<S> extends A<S> {
+          method(S s) => null; // testGenericNotSubtype:2
+        }
+        """);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:3
+        }
+        class Class extends A<num> {
+          method(int i) => null; // testGenericNotSubtype:4
+        }
+        """);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:5
+        }
+        class B<S> {
+          method(S s) => null; // testGenericNotSubtype:6
+        }
+        class Class extends A<double> implements B<int> {
+          method(num i) => null; // testGenericNotSubtype:7
+        }
+        """);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:8
+        }
+        class Class<S> extends A<S> {
+          method(int i) => null; // testGenericNotSubtype:9
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:10
+        }
+        class B<S> extends A<S> {
+
+        }
+        class Class<U> extends B<U> {
+          method(U u) => null; // testGenericNotSubtype:11
+        }
+        """);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:12
+        }
+        class B<S> {
+          method(S s) => null; // testGenericNotSubtype:13
+        }
+        class Class<U> extends A<U> implements B<num> {
+          method(int i) => null; // testGenericNotSubtype:14
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:15
+        }
+        class B<S> {
+          method(S s) => null; // testGenericNotSubtype:16
+        }
+        class Class extends A<int> implements B<String> {
+          method(double d) => null; // testGenericNotSubtype:17
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_METHOD,
+                        MessageKind.INVALID_OVERRIDE_METHOD],
+             infos: [MessageKind.INVALID_OVERRIDDEN_METHOD,
+                     MessageKind.INVALID_OVERRIDDEN_METHOD]);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:18
+        }
+        class B<S> {
+          method(S s) => null; // testGenericNotSubtype:19
+        }
+        class Class implements A<int>, B<String> {
+          method(double d) => null; // testGenericNotSubtype:20
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_METHOD,
+                        MessageKind.INVALID_OVERRIDE_METHOD],
+             infos: [MessageKind.INVALID_OVERRIDDEN_METHOD,
+                     MessageKind.INVALID_OVERRIDDEN_METHOD]);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:21
+        }
+        class B<S> {
+          method(S s) => null; // testGenericNotSubtype:22
+        }
+        abstract class C implements A<int>, B<num> {
+        }
+        class Class implements C {
+          method(double d) => null; // testGenericNotSubtype:23
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_METHOD,
+             infos: MessageKind.INVALID_OVERRIDDEN_METHOD);
+
+  check("""
+        class A<T> {
+          method(T t) => null; // testGenericNotSubtype:24
+        }
+        class B<S> {
+          method(S s) => null; // testGenericNotSubtype:25
+        }
+        abstract class C implements A<int>, B<num> {
+        }
+        class Class implements C {
+          method(String s) => null; // testGenericNotSubtype:26
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_METHOD,
+                        MessageKind.INVALID_OVERRIDE_METHOD],
+             infos: [MessageKind.INVALID_OVERRIDDEN_METHOD,
+                     MessageKind.INVALID_OVERRIDDEN_METHOD]);
+}
+
+testSetterNotSubtype() {
+  check("""
+        class A {
+          set setter(_) => null; // testSetterNotSubtype:1
+        }
+        class Class extends A {
+          set setter(_) => null; // testSetterNotSubtype:2
+        }
+        """);
+
+  check("""
+        class A {
+          void set setter(_) {} // testSetterNotSubtype:3
+        }
+        class Class extends A {
+          set setter(_) => null; // testSetterNotSubtype:4
+        }
+        """);
+
+  check("""
+        class A {
+          set setter(_) => null; // testSetterNotSubtype:5
+        }
+        class Class extends A {
+          void set setter(_) {} // testSetterNotSubtype:6
+        }
+        """);
+
+  check("""
+        class A {
+          set setter(_) => null; // testSetterNotSubtype:7
+        }
+        class Class extends A {
+          void set setter(_) {} // testSetterNotSubtype:8
+        }
+        """);
+
+  check("""
+        class A {
+          set setter(num _) => null; // testSetterNotSubtype:9
+        }
+        class Class extends A {
+          set setter(num _) => null; // testSetterNotSubtype:10
+        }
+        """);
+
+  check("""
+        class A {
+          set setter(num _) => null; // testSetterNotSubtype:11
+        }
+        class Class extends A {
+          set setter(int _) => null; // testSetterNotSubtype:12
+        }
+        """);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:13
+        }
+        class Class extends A {
+          set setter(num _) => null; // testSetterNotSubtype:14
+        }
+        """);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:15
+        }
+        class Class extends A {
+          set setter(double _) => null; // testSetterNotSubtype:16
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_SETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_SETTER);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:17
+        }
+        class B extends A {
+          set setter(num _) => null; // testSetterNotSubtype:18
+        }
+        class Class extends B {
+          set setter(double _) => null; // testSetterNotSubtype:19
+        }
+        """);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:20
+        }
+        class B {
+          set setter(num _) => null; // testSetterNotSubtype:21
+        }
+        class Class extends A implements B {
+          set setter(double _) => null; // testSetterNotSubtype:22
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_SETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_SETTER);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:23
+        }
+        class B {
+          set setter(String _) => null; // testSetterNotSubtype:24
+        }
+        class Class extends A implements B {
+          set setter(double _) => null; // testSetterNotSubtype:25
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_SETTER,
+                        MessageKind.INVALID_OVERRIDE_SETTER],
+             infos: [MessageKind.INVALID_OVERRIDDEN_SETTER,
+                     MessageKind.INVALID_OVERRIDDEN_SETTER]);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:26
+        }
+        class B {
+          set setter(String _) => null; // testSetterNotSubtype:27
+        }
+        class Class implements A, B {
+          set setter(double _) => null; // testSetterNotSubtype:28
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_SETTER,
+                        MessageKind.INVALID_OVERRIDE_SETTER],
+             infos: [MessageKind.INVALID_OVERRIDDEN_SETTER,
+                     MessageKind.INVALID_OVERRIDDEN_SETTER]);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:29
+        }
+        class B {
+          set setter(num _) => null; // testSetterNotSubtype:30
+        }
+        abstract class C implements A, B {
+        }
+        class Class implements C {
+          set setter(double _) => null; // testSetterNotSubtype:31
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_SETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_SETTER);
+
+  check("""
+        class A {
+          set setter(int _) => null; // testSetterNotSubtype:32
+        }
+        class B {
+          set setter(num _) => null; // testSetterNotSubtype:33
+        }
+        abstract class C implements A, B {
+        }
+        class Class implements C {
+          set setter(String _) => null; // testSetterNotSubtype:34
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_SETTER,
+                        MessageKind.INVALID_OVERRIDE_SETTER],
+             infos: [MessageKind.INVALID_OVERRIDDEN_SETTER,
+                     MessageKind.INVALID_OVERRIDDEN_SETTER]);
+}
+
+testFieldNotSubtype() {
+  check("""
+        class A {
+          int field; // testFieldNotSubtype:1
+        }
+        class Class extends A {
+          int field; // testFieldNotSubtype:2
+        }
+        """);
+
+  check("""
+        class A {
+          num field; // testFieldNotSubtype:3
+        }
+        class Class extends A {
+          int field; // testFieldNotSubtype:4
+        }
+        """);
+
+  check("""
+        class A {
+          int field; // testFieldNotSubtype:5
+        }
+        class Class extends A {
+          num field; // testFieldNotSubtype:6
+        }
+        """);
+
+  check("""
+        class A {
+          int field; // testFieldNotSubtype:7
+        }
+        class Class extends A {
+          double field; // testFieldNotSubtype:8
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_FIELD,
+             infos: MessageKind.INVALID_OVERRIDDEN_FIELD);
+
+  check("""
+        class A {
+          int field; // testFieldNotSubtype:9
+        }
+        class B extends A {
+          num field; // testFieldNotSubtype:10
+        }
+        class Class extends B {
+          double field; // testFieldNotSubtype:11
+        }
+        """);
+
+  check("""
+        class A {
+          num field; // testFieldNotSubtype:12
+        }
+        class Class extends A {
+          int get field => null; // testFieldNotSubtype:13
+        }
+        """);
+
+  check("""
+        class A {
+          num field; // testFieldNotSubtype:14
+        }
+        class Class extends A {
+          String get field => null; // testFieldNotSubtype:15
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_FIELD_WITH_GETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_FIELD);
+
+  check("""
+        class A {
+          num get field => null; // testFieldNotSubtype:16
+        }
+        class Class extends A {
+          String field; // testFieldNotSubtype:17
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_GETTER_WITH_FIELD,
+             infos: MessageKind.INVALID_OVERRIDDEN_GETTER);
+
+  check("""
+        class A {
+          num field; // testFieldNotSubtype:18
+        }
+        class Class extends A {
+          set field(int _) {} // testFieldNotSubtype:19
+        }
+        """);
+
+  check("""
+        class A {
+          num field; // testFieldNotSubtype:19
+        }
+        class Class extends A {
+          void set field(int _) {} // testFieldNotSubtype:20
+        }
+        """);
+
+  check("""
+        class A {
+          set field(int _) {} // testFieldNotSubtype:21
+        }
+        class Class extends A {
+          num field; // testFieldNotSubtype:22
+        }
+        """);
+
+  check("""
+        class A {
+          void set field(int _) {} // testFieldNotSubtype:23
+        }
+        class Class extends A {
+          num field; // testFieldNotSubtype:24
+        }
+        """);
+
+  check("""
+        class A {
+          num field; // testFieldNotSubtype:25
+        }
+        class Class extends A {
+          set field(String _) {} // testFieldNotSubtype:26
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_FIELD_WITH_SETTER,
+             infos: MessageKind.INVALID_OVERRIDDEN_FIELD);
+
+  check("""
+        class A {
+          set field(num _) {} // testFieldNotSubtype:27
+        }
+        class Class extends A {
+          String field; // testFieldNotSubtype:28
+        }
+        """, warnings: MessageKind.INVALID_OVERRIDE_SETTER_WITH_FIELD,
+             infos: MessageKind.INVALID_OVERRIDDEN_SETTER);
+
+  check("""
+        class A {
+          int field; // testFieldNotSubtype:29
+        }
+        class Class implements A {
+          String get field => null; // testFieldNotSubtype:30
+          void set field(String s) {} // testFieldNotSubtype:31
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_FIELD_WITH_GETTER,
+                        MessageKind.INVALID_OVERRIDE_FIELD_WITH_SETTER],
+             infos: [MessageKind.INVALID_OVERRIDDEN_FIELD,
+                     MessageKind.INVALID_OVERRIDDEN_FIELD]);
+
+
+  check("""
+        class A {
+          String get field => null; // testFieldNotSubtype:32
+          void set field(String s) {} // testFieldNotSubtype:33
+        }
+        class Class implements A {
+          int field; // testFieldNotSubtype:34
+        }
+        """, warnings: [MessageKind.INVALID_OVERRIDE_GETTER_WITH_FIELD,
+                        MessageKind.INVALID_OVERRIDE_SETTER_WITH_FIELD],
+             infos: [MessageKind.INVALID_OVERRIDDEN_GETTER,
+                     MessageKind.INVALID_OVERRIDDEN_SETTER]);
+}
+
+testMixedOverride() {
+  check("""
+        class A {
+          var member; // testMixedOverride:1
+        }
+        class Class extends A {
+          member() {} // testMixedOverride:2
+        }
+        """, errors: MessageKind.CANNOT_OVERRIDE_FIELD_WITH_METHOD,
+             infos: MessageKind.CANNOT_OVERRIDE_FIELD_WITH_METHOD_CONT);
+
+  check("""
+        class A {
+          member() {} // testMixedOverride:3
+        }
+        class Class extends A {
+          var member; // testMixedOverride:4
+        }
+        """, errors: MessageKind.CANNOT_OVERRIDE_METHOD_WITH_FIELD,
+             infos: MessageKind.CANNOT_OVERRIDE_METHOD_WITH_FIELD_CONT);
+
+  check("""
+        class A {
+          get member => null; // testMixedOverride:5
+        }
+        class Class extends A {
+          member() {} // testMixedOverride:6
+        }
+        """, errors: MessageKind.CANNOT_OVERRIDE_GETTER_WITH_METHOD,
+             infos: MessageKind.CANNOT_OVERRIDE_GETTER_WITH_METHOD_CONT);
+
+  check("""
+        class A {
+          member() {} // testMixedOverride:7
+        }
+        class Class extends A {
+          get member => null; // testMixedOverride:8
+        }
+        """, errors: MessageKind.CANNOT_OVERRIDE_METHOD_WITH_GETTER,
+             infos: MessageKind.CANNOT_OVERRIDE_METHOD_WITH_GETTER_CONT);
+
+  check("""
+        abstract class A {
+          var member; // testMixedOverride:9
+        }
+        abstract class B {
+          get member; // testMixedOverride:10
+        }
+        abstract class Class implements A, B {
+        }
+        """);
+
+  check("""
+        abstract class A {
+          var member; // testMixedOverride:11
+        }
+        abstract class B {
+          member() {} // testMixedOverride:12
+        }
+        abstract class Class implements A, B {
+        }
+        """, warnings: MessageKind.INHERIT_GETTER_AND_METHOD,
+             infos: [MessageKind.INHERITED_METHOD,
+                     MessageKind.INHERITED_IMPLICIT_GETTER]);
+
+  check("""
+        abstract class A {
+          get member; // testMixedOverride:13
+        }
+        abstract class B {
+          member() {} // testMixedOverride:14
+        }
+        abstract class Class implements A, B {
+        }
+        """, warnings: MessageKind.INHERIT_GETTER_AND_METHOD,
+             infos: [MessageKind.INHERITED_METHOD,
+                     MessageKind.INHERITED_EXPLICIT_GETTER]);
+
+  check("""
+        abstract class A {
+          get member; // testMixedOverride:15
+        }
+        abstract class B {
+          member() {} // testMixedOverride:16
+        }
+        abstract class C {
+          var member; // testMixedOverride:17
+        }
+        abstract class D {
+          member() {} // testMixedOverride:18
+        }
+        abstract class E {
+          get member; // testMixedOverride:19
+        }
+        abstract class Class implements A, B, C, D, E {
+        }
+        """, warnings: MessageKind.INHERIT_GETTER_AND_METHOD,
+             infos: [MessageKind.INHERITED_EXPLICIT_GETTER,
+                     MessageKind.INHERITED_METHOD,
+                     MessageKind.INHERITED_IMPLICIT_GETTER,
+                     MessageKind.INHERITED_METHOD,
+                     MessageKind.INHERITED_EXPLICIT_GETTER]);
+
+  check("""
+        abstract class A {
+          get member; // testMixedOverride:20
+        }
+        abstract class B {
+          member() {} // testMixedOverride:21
+        }
+        abstract class C implements A, B {
+        }
+        class Class extends C {
+          member() {} // testMixedOverride:22
+        }
+        """, errors: MessageKind.CANNOT_OVERRIDE_GETTER_WITH_METHOD,
+             warnings: MessageKind.INHERIT_GETTER_AND_METHOD,
+             infos: [MessageKind.INHERITED_METHOD,
+                     MessageKind.INHERITED_EXPLICIT_GETTER,
+                     MessageKind.CANNOT_OVERRIDE_GETTER_WITH_METHOD_CONT]);
+
+  check("""
+        abstract class A {
+          get member; // testMixedOverride:23
+        }
+        abstract class B {
+          member() {} // testMixedOverride:24
+        }
+        abstract class C implements A, B {
+        }
+        class Class extends C {
+          get member => null; // testMixedOverride:25
+        }
+        """, errors: MessageKind.CANNOT_OVERRIDE_METHOD_WITH_GETTER,
+             warnings: MessageKind.INHERIT_GETTER_AND_METHOD,
+             infos: [MessageKind.INHERITED_METHOD,
+                     MessageKind.INHERITED_EXPLICIT_GETTER,
+                     MessageKind.CANNOT_OVERRIDE_METHOD_WITH_GETTER_CONT]);
+}
+
+testAbstractMethods() {
+  check("""
+        abstract class Class {
+          method(); // testAbstractMethod:1
+        }
+        """);
+
+  check("""
+        class Class {
+          method(); // testAbstractMethod:2
+        }
+        """, warnings: MessageKind.ABSTRACT_METHOD,
+             infos: []);
+
+  check("""
+        class Class {
+          get getter; // testAbstractMethod:3
+        }
+        """, warnings: MessageKind.ABSTRACT_GETTER,
+             infos: []);
+
+  check("""
+        class Class {
+          set setter(_); // testAbstractMethod:4
+        }
+        """, warnings: MessageKind.ABSTRACT_SETTER,
+             infos: []);
+
+  check("""
+        abstract class A {
+          method(); // testAbstractMethod:5
+        }
+        class Class extends A {
+          method() {} // testAbstractMethod:6
+        }
+        """);
+
+  check("""
+        abstract class A {
+          method(); // testAbstractMethod:7
+        }
+        class Class extends A {
+          method([a]) {} // testAbstractMethod:8
+        }
+        """);
+
+  check("""
+        abstract class A {
+          method(); // testAbstractMethod:9
+        }
+        class Class extends A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD_ONE,
+             infos: MessageKind.UNIMPLEMENTED_METHOD_CONT);
+
+  check("""
+        abstract class A {
+          get getter; // testAbstractMethod:10
+        }
+        class Class extends A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_GETTER_ONE,
+             infos: MessageKind.UNIMPLEMENTED_EXPLICIT_GETTER);
+
+  check("""
+        abstract class A {
+          set setter(_); // testAbstractMethod:11
+        }
+        class Class extends A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_SETTER_ONE,
+             infos: MessageKind.UNIMPLEMENTED_EXPLICIT_SETTER);
+
+  check("""
+        abstract class A {
+          method(); // testAbstractMethod:12
+        }
+        class B {
+          method() {} // testAbstractMethod:13
+        }
+        class Class extends A implements B {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD,
+             infos: [MessageKind.UNIMPLEMENTED_METHOD_CONT,
+                     MessageKind.UNIMPLEMENTED_METHOD_CONT]);
+
+  check("""
+        abstract class A {
+          get getter; // testAbstractMethod:14
+        }
+        class B {
+          get getter => 0; // testAbstractMethod:15
+        }
+        class Class extends A implements B {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_GETTER,
+             infos: [MessageKind.UNIMPLEMENTED_EXPLICIT_GETTER,
+                     MessageKind.UNIMPLEMENTED_EXPLICIT_GETTER]);
+
+  check("""
+        abstract class A {
+          set setter(_); // testAbstractMethod:16
+        }
+        class B {
+          set setter(_) {} // testAbstractMethod:17
+        }
+        class Class extends A implements B {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_SETTER,
+             infos: [MessageKind.UNIMPLEMENTED_EXPLICIT_SETTER,
+                     MessageKind.UNIMPLEMENTED_EXPLICIT_SETTER]);
+
+  check("""
+        abstract class A {
+          get field; // testAbstractMethod:18
+        }
+        class B {
+          var field; // testAbstractMethod:19
+        }
+        class Class extends A implements B {
+          set field(_) {} // testAbstractMethod:20
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_GETTER,
+             infos: [MessageKind.UNIMPLEMENTED_EXPLICIT_GETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_GETTER]);
+
+  check("""
+        abstract class A {
+          set field(_); // testAbstractMethod:21
+        }
+        class B {
+          var field; // testAbstractMethod:22
+        }
+        class Class extends A implements B {
+          get field => 0; // testAbstractMethod:23
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_SETTER,
+             infos: [MessageKind.UNIMPLEMENTED_EXPLICIT_SETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER]);
+
+  check("""
+        class A {
+          method() {} // testAbstractMethod:24
+        }
+        class Class implements A {
+          method() {} // testAbstractMethod:25
+        }
+        """);
+
+  check("""
+        class A {
+          method() {} // testAbstractMethod:26
+        }
+        class Class implements A {
+          method([a]) {} // testAbstractMethod:27
+        }
+        """);
+
+  check("""
+        class A {
+          method() {} // testAbstractMethod:28
+        }
+        class Class implements A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD_ONE,
+             infos: MessageKind.UNIMPLEMENTED_METHOD_CONT);
+
+  check("""
+        class A {
+          method() {} // testAbstractMethod:29
+        }
+        class B {
+          method() {} // testAbstractMethod:30
+        }
+        class Class extends A implements B {
+        }
+        """);
+
+  check("""
+        class A {
+          var member; // testAbstractMethod:31
+        }
+        class Class implements A {
+        }
+        """, warnings: [MessageKind.UNIMPLEMENTED_GETTER_ONE,
+                        MessageKind.UNIMPLEMENTED_SETTER_ONE],
+             infos: [MessageKind.UNIMPLEMENTED_IMPLICIT_GETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER]);
+
+  check("""
+        class A {
+          var member; // testAbstractMethod:32
+        }
+        class B {
+          get member => null; // testAbstractMethod:33
+          set member(_) {} // testAbstractMethod:34
+        }
+        class Class implements A, B {
+        }
+        """, warnings: [MessageKind.UNIMPLEMENTED_GETTER,
+                        MessageKind.UNIMPLEMENTED_SETTER],
+             infos: [MessageKind.UNIMPLEMENTED_EXPLICIT_GETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_GETTER,
+                     MessageKind.UNIMPLEMENTED_EXPLICIT_SETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER]);
+
+  check("""
+        class A {
+          var member; // testAbstractMethod:35
+        }
+        class B {
+          var member; // testAbstractMethod:36
+        }
+        class Class implements A, B {
+        }
+        """, warnings: [MessageKind.UNIMPLEMENTED_GETTER,
+                        MessageKind.UNIMPLEMENTED_SETTER],
+             infos: [MessageKind.UNIMPLEMENTED_IMPLICIT_GETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_GETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER,
+                     MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER]);
+
+  check("""
+        class A {
+          get member => 0; // testAbstractMethod:37
+        }
+        class Class implements A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_GETTER_ONE,
+             infos: MessageKind.UNIMPLEMENTED_EXPLICIT_GETTER);
+
+  check("""
+        class A {
+          set member(_) {} // testAbstractMethod:38
+        }
+        class Class implements A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_SETTER_ONE,
+             infos: MessageKind.UNIMPLEMENTED_EXPLICIT_SETTER);
+
+  check("""
+        class A {
+          var member; // testAbstractMethod:39
+        }
+        class Class implements A {
+          get member => 0;
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_SETTER_ONE,
+             infos: MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER);
+
+  check("""
+        class A {
+          var field; // testAbstractMethod:40
+        }
+        class Class implements A {
+          final field = 0; // testAbstractMethod:41
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_SETTER_ONE,
+             infos: MessageKind.UNIMPLEMENTED_IMPLICIT_SETTER);
+
+  check("""
+        class A {
+          var member; // testAbstractMethod:42
+        }
+        class Class implements A {
+          set member(_) {}
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_GETTER_ONE,
+             infos: MessageKind.UNIMPLEMENTED_IMPLICIT_GETTER);
+
+  check("""
+        abstract class A {
+          method() {} // testAbstractMethod:43
+        }
+        class Class extends A {
+          method();
+        }
+        """);
+}
+
+testNoSuchMethod() {
+  check("""
+        class Class {
+          method(); // testNoSuchMethod:1
+        }
+        """, warnings: MessageKind.ABSTRACT_METHOD,
+             infos: []);
+
+  check("""
+        @proxy
+        class Class {
+          method(); // testNoSuchMethod:2
+        }
+        """);
+
+  check("""
+        class Class {
+          noSuchMethod(_) => null;
+          method(); // testNoSuchMethod:3
+        }
+        """);
+
+  check("""
+        class Class {
+          noSuchMethod(_, [__]) => null;
+          method(); // testNoSuchMethod:4
+        }
+        """);
+
+  check("""
+        class Class {
+          noSuchMethod(_);
+          method(); // testNoSuchMethod:5
+        }
+        """);
+
+  check("""
+        abstract class A {
+          method(); // testNoSuchMethod:6
+        }
+        class Class extends A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD_ONE,
+             infos: MessageKind.UNIMPLEMENTED_METHOD_CONT);
+
+  check("""
+        abstract class A {
+          method(); // testNoSuchMethod:7
+        }
+        @proxy
+        class Class extends A {
+        }
+        """);
+
+  check("""
+        abstract class A {
+          method(); // testNoSuchMethod:8
+        }
+        class Class extends A {
+          noSuchMethod(_) => null;
+        }
+        """);
+
+  check("""
+        class A {
+          method() {} // testNoSuchMethod:9
+        }
+        class Class implements A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD_ONE,
+             infos: MessageKind.UNIMPLEMENTED_METHOD_CONT);
+
+  check("""
+        class A {
+          method() {} // testNoSuchMethod:10
+        }
+        class Class implements A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD_ONE,
+             infos: MessageKind.UNIMPLEMENTED_METHOD_CONT);
+
+  check("""

[karlklose, 2014/01/28 12:27:45]

I am not sure about this test. Please double check that @proxy is enough to
suppress the warning.

[Johnni Winther, 2014/01/31 12:29:30]

The spec has changed. Filed a bug with co19.

+        class A {
+          method() {} // testNoSuchMethod:11
+        }
+        @proxy
+        class Class implements A {
+        }
+        """);
+
+  check("""
+        class A {
+          method() {} // testNoSuchMethod:12
+        }
+        class Class implements A {
+          noSuchMethod(_) => null;
+        }
+        """);
+
+  check("""
+        @proxy
+        class A {
+          method(); // testNoSuchMethod:13
+        }
+        class Class extends A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD_ONE,
+             infos: MessageKind.UNIMPLEMENTED_METHOD_CONT);
+
+  check("""
+        class A {
+          noSuchMethod(_) => null;
+          method(); // testNoSuchMethod:14
+        }
+        class Class extends A {
+        }
+        """, warnings: MessageKind.UNIMPLEMENTED_METHOD_ONE,
+             infos: MessageKind.UNIMPLEMENTED_METHOD_CONT);
+}