Check in codegen test expectations.

test/codegen/expect/language/class_codegen_test.js

Index: test/codegen/expect/language/class_codegen_test.js
diff --git a/test/codegen/expect/language/class_codegen_test.js b/test/codegen/expect/language/class_codegen_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..eb9eb3560b4e6142ca4e5e4e5d4a8a6eac1dc8d5
--- /dev/null
+++ b/test/codegen/expect/language/class_codegen_test.js
@@ -0,0 +1,57 @@
+dart_library.library('language/class_codegen_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__class_codegen_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const class_codegen_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  class_codegen_test.A = class A extends core.Object {
+    new() {
+      this.x = 3;
+    }
+    foo() {
+      return this.x;
+    }
+  };
+  dart.setSignature(class_codegen_test.A, {
+    constructors: () => ({new: dart.definiteFunctionType(class_codegen_test.A, [])}),
+    methods: () => ({foo: dart.definiteFunctionType(dart.dynamic, [])})
+  });
+  class_codegen_test.B = class B extends class_codegen_test.A {
+    new() {
+      super.new();
+    }
+    bar() {
+      return 499;
+    }
+  };
+  dart.setSignature(class_codegen_test.B, {
+    methods: () => ({bar: dart.definiteFunctionType(dart.dynamic, [])})
+  });
+  class_codegen_test.C = class C extends class_codegen_test.A {
+    new() {
+      super.new();
+    }
+    bar() {
+      return 42;
+    }
+  };
+  dart.setSignature(class_codegen_test.C, {
+    methods: () => ({bar: dart.definiteFunctionType(dart.dynamic, [])})
+  });
+  class_codegen_test.main = function() {
+    let b = new class_codegen_test.B();
+    let c = new class_codegen_test.C();
+    expect$.Expect.equals(3, b.foo());
+    expect$.Expect.equals(3, c.foo());
+    expect$.Expect.equals(499, b.bar());
+    expect$.Expect.equals(42, c.bar());
+  };
+  dart.fn(class_codegen_test.main, VoidTodynamic());
+  // Exports:
+  exports.class_codegen_test = class_codegen_test;
+});