fix #30030, fix #27327 - fix tearoffs and various Object member bugs

tests/language_strong/tearoff_dynamic_test.dart

-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, 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';
 
-class Foo {
-  dynamic method(int x) {}
-  dynamic method2(int x) {}
+class C {
+  dynamic f(int x) => x + 1;
+  dynamic g(int x) => x + 2;
+}
+
+class D extends C {
+  f(int x) => x + 41;
+  get superF => super.f;
+  get superG => super.g;
+}
+
+tearoffEquals(f1, f2) {
+  Expect.equals(f1, f2);
+  Expect.equals(f1.hashCode, f2.hashCode);
+}
+
+tearoffNotEquals(f1, f2) {
+  Expect.notEquals(f1, f2);
+  Expect.notEquals(f1.hashCode, f2.hashCode);
+}
+
+testDynamic() {
+  C c = new C();
+
+  dynamic f1 = c.f;
+  Expect.throws(() => f1(2.5));
+  Expect.equals(f1(41), 42);
+
+  dynamic f2 = (c as dynamic).f;
+  Expect.throws(() => f2(2.5));
+  Expect.equals(f2(41), 42);
+
+  tearoffEquals(f1, f1);
+  tearoffEquals(f1, f2);
+  tearoffEquals(f1, c.f);
+  tearoffEquals(c.g, (c as dynamic).g);
+
+  tearoffNotEquals(f1, new C().f);
+  tearoffNotEquals(f1, (new C() as dynamic).f);
+  tearoffNotEquals(f1, c.g);
+  tearoffNotEquals(f1, (c as dynamic).g);
+}
+
+testSuper() {
+  D d = new D();
+  dynamic superF1 = d.superF;
+  dynamic superF2 = (d as dynamic).superF;
+
+  Expect.throws(() => superF1(2.5));
+  Expect.throws(() => superF2(2.5));
+  Expect.equals(superF1(41), 42);
+  Expect.equals(superF2(41), 42);
+
+  tearoffEquals(superF1, superF1);
+  tearoffEquals(superF1, superF2);
+  tearoffEquals(superF1, d.superF);
+  tearoffEquals(d.f, (d as dynamic).f);
+
+  tearoffNotEquals(superF1, d.f);
+  tearoffNotEquals(superF1, (d as dynamic).f);
+  tearoffNotEquals(superF1, new D().superF);
+  tearoffNotEquals(superF1, (new D() as dynamic).superF);
+  tearoffNotEquals(superF1, d.superG);
+  tearoffNotEquals(superF1, (d as dynamic).superG);
+
+  tearoffEquals(d.superG, (d as dynamic).superG);
+  tearoffEquals(d.g, d.superG);
+}
+
+class S {
+  final int id;
+  S(this.id);
+  toString() => 'S#$id';
+}
+
+testToString() {
+  testType<T>(T c) {
+    dynamic d = c;
+    Object o = c;
+    tearoffEquals(c.toString, d.toString);
+    tearoffEquals(c.toString, o.toString);
+
+    var expected = c.toString();
+    dynamic f = d.toString;
+    tearoffEquals(f(), expected);
+    f = o.toString;
+    tearoffEquals(f(), expected);
+    var g = c.toString;
+    tearoffEquals(g(), expected);
+  }
+
+  testType(new C());
+  testType(new D());
+  testType(new S(1));
+  testType(new S(2));
+  testType(new Object());
+  testType(null);
+  testType(Object); // Type
+  testType(C); // Type
+  testType(42);
+  testType('hi');
+  testType(true);
+  testType([1, 2, 3]);
+  testType({'a': 'b'});
+  testType((x) => x + 1);
+  testType(testType);
+}
+
+class N {
+  noSuchMethod(i) => i;
+}
+
+testNoSuchMethod() {
+  // Create an invocation.
+  Invocation i = (new N() as dynamic).foo(1, bar: 2);
+  tearoffEquals(i.memberName, #foo);
+
+  testType<T>(T c) {
+    dynamic d = c;
+    Object o = c;
+    tearoffEquals(c.noSuchMethod, d.noSuchMethod);
+    tearoffEquals(c.noSuchMethod, o.noSuchMethod);
+
+    var expected;
+    try {
+      c.noSuchMethod(i);
+    } on NoSuchMethodError catch (error) {
+      var nsm = '$error';
+      Expect.isTrue(nsm.startsWith("NoSuchMethodError: "));
+      Expect.isTrue(nsm.contains("'foo'"));
+      expected = (e) => e is NoSuchMethodError && '$e' == nsm;
+    }
+    dynamic f = d.noSuchMethod;
+    Expect.throws(() => f(i), expected);
+    f = o.noSuchMethod;
+    Expect.throws(() => f(i), expected);
+    var g = c.noSuchMethod;
+    Expect.throws(() => g(i), expected);
+  }
+
+  testType(new C());
+  testType(new D());
+  testType(new S(1));
+  testType(new S(2));
+  testType(new Object());
+  testType(null);
+  testType(Object); // Type
+  testType(C); // Type
+  testType(42);
+  testType('hi');
+  testType(true);
+  testType([1, 2, 3]);
+  testType({'a': 'b'});
+  testType((x) => x + 1);
+  testType(testType);
 }
 
 main() {
-  Foo foo = new Foo();
-
-  dynamic dynamicMethod1 = foo.method;
-  Expect.throws(() => dynamicMethod1(2.5));
-
-  dynamic dynamicMethod2 = (foo as dynamic).method;
-  Expect.throws(() => dynamicMethod2(2.5));
-
-  Expect.equals(dynamicMethod1, dynamicMethod1);
-  Expect.equals(dynamicMethod1, dynamicMethod2);
-  Expect.equals(dynamicMethod1, foo.method);
-  Expect.equals(foo.method2, (foo as dynamic).method2);
-
-  Expect.notEquals(dynamicMethod1, new Foo().method);
-  Expect.notEquals(dynamicMethod1, (new Foo() as dynamic).method);
-  Expect.notEquals(dynamicMethod1, foo.method2);
-  Expect.notEquals(dynamicMethod1, (foo as dynamic).method2);
+  testDynamic();
+  testSuper();
+  testToString();
+  testNoSuchMethod();
 }