Check in codegen test expectations.

test/codegen/expect/corelib/hashcode_test.js

Index: test/codegen/expect/corelib/hashcode_test.js
diff --git a/test/codegen/expect/corelib/hashcode_test.js b/test/codegen/expect/corelib/hashcode_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..19e2ee0141a5b793523fbdca27042acac6795a9a
--- /dev/null
+++ b/test/codegen/expect/corelib/hashcode_test.js
@@ -0,0 +1,70 @@
+dart_library.library('corelib/hashcode_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__hashcode_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const _interceptors = dart_sdk._interceptors;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const hashcode_test = Object.create(null);
+  let JSArrayOfObject = () => (JSArrayOfObject = dart.constFn(_interceptors.JSArray$(core.Object)))();
+  let VoidToint = () => (VoidToint = dart.constFn(dart.definiteFunctionType(core.int, [])))();
+  let dynamicToint = () => (dynamicToint = dart.constFn(dart.definiteFunctionType(core.int, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  hashcode_test.Override = class Override extends core.Object {
+    new() {
+      this.hash = null;
+    }
+    get superHash() {
+      return super.hashCode;
+    }
+    get hashCode() {
+      return this.hash;
+    }
+    foo() {
+      return this.hash;
+    }
+    ['=='](other) {
+      return hashcode_test.Override.is(other) && other.hash == this.hash;
+    }
+  };
+  dart.setSignature(hashcode_test.Override, {
+    methods: () => ({
+      foo: dart.definiteFunctionType(core.int, []),
+      '==': dart.definiteFunctionType(core.bool, [core.Object])
+    })
+  });
+  hashcode_test.bar = function() {
+    return 42;
+  };
+  dart.fn(hashcode_test.bar, VoidToint());
+  let const$;
+  hashcode_test.main = function() {
+    let o = new core.Object();
+    let hash = o.hashCode;
+    expect$.Expect.equals(hash, o.hashCode);
+    expect$.Expect.equals(hash, core.identityHashCode(o));
+    let c = new hashcode_test.Override();
+    let identityHash = c.superHash;
+    hash = identityHash == 42 ? 37 : 42;
+    c.hash = hash;
+    expect$.Expect.equals(hash, c.hashCode);
+    expect$.Expect.equals(identityHash, core.identityHashCode(c));
+    let samples = JSArrayOfObject().of([0, 268435456, 1.5, -0, null, true, false, const$ || (const$ = dart.const(new core.Object()))]);
+    for (let v of samples) {
+      core.print(v);
+      expect$.Expect.equals(dart.hashCode(v), core.identityHashCode(v));
+    }
+    samples = JSArrayOfObject().of(["string", "", dart.fn(x => 42, dynamicToint()), dart.bind(c, 'foo'), hashcode_test.bar]);
+    for (let v of samples) {
+      core.print(v);
+      expect$.Expect.equals(dart.hashCode(v), dart.hashCode(v));
+      expect$.Expect.equals(core.identityHashCode(v), core.identityHashCode(v));
+    }
+  };
+  dart.fn(hashcode_test.main, VoidTodynamic());
+  // Exports:
+  exports.hashcode_test = hashcode_test;
+});