Check in codegen test expectations.

test/codegen/expect/language/savannah_test.js

Index: test/codegen/expect/language/savannah_test.js
diff --git a/test/codegen/expect/language/savannah_test.js b/test/codegen/expect/language/savannah_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..b75dec58c5d5c5d147a405b371e670d32b3a9c0c
--- /dev/null
+++ b/test/codegen/expect/language/savannah_test.js
@@ -0,0 +1,88 @@
+dart_library.library('language/savannah_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__savannah_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 savannah_test = Object.create(null);
+  let MapOfBigGame$String = () => (MapOfBigGame$String = dart.constFn(core.Map$(savannah_test.BigGame, core.String)))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  savannah_test.BigGame = class BigGame extends core.Object {};
+  savannah_test.Giraffe = class Giraffe extends core.Object {
+    new(name) {
+      this.name = name;
+      this.identityHash_ = savannah_test.Giraffe.nextId();
+    }
+    get hashCode() {
+      return this.identityHash_;
+    }
+    static nextId() {
+      if (savannah_test.Giraffe.nextId_ == null) {
+        savannah_test.Giraffe.nextId_ = 17;
+      }
+      let x = savannah_test.Giraffe.nextId_;
+      savannah_test.Giraffe.nextId_ = dart.notNull(x) + 1;
+      return x;
+    }
+  };
+  savannah_test.Giraffe[dart.implements] = () => [savannah_test.BigGame];
+  dart.setSignature(savannah_test.Giraffe, {
+    constructors: () => ({new: dart.definiteFunctionType(savannah_test.Giraffe, [core.String])}),
+    statics: () => ({nextId: dart.definiteFunctionType(core.int, [])}),
+    names: ['nextId']
+  });
+  savannah_test.Giraffe.nextId_ = null;
+  savannah_test.Zebra = class Zebra extends core.Object {
+    new(name) {
+      this.name = name;
+    }
+  };
+  savannah_test.Zebra[dart.implements] = () => [savannah_test.BigGame];
+  dart.setSignature(savannah_test.Zebra, {
+    constructors: () => ({new: dart.definiteFunctionType(savannah_test.Zebra, [core.String])})
+  });
+  savannah_test.SavannahTest = class SavannahTest extends core.Object {
+    static testMain() {
+      let savannah = MapOfBigGame$String().new();
+      let giraffe1 = new savannah_test.Giraffe("Tony");
+      let giraffe2 = new savannah_test.Giraffe("Rose");
+      savannah[dartx.set](giraffe1, giraffe1.name);
+      savannah[dartx.set](giraffe2, giraffe2.name);
+      core.print(dart.str`giraffe1 hash: ${giraffe1.hashCode}`);
+      core.print(dart.str`giraffe2 hash: ${giraffe2.hashCode}`);
+      let count = savannah[dartx.length];
+      core.print(dart.str`getCount is ${count}`);
+      expect$.Expect.equals(2, count);
+      core.print(dart.str`giraffe1: ${savannah[dartx.get](giraffe1)}`);
+      core.print(dart.str`giraffe2: ${savannah[dartx.get](giraffe2)}`);
+      expect$.Expect.equals("Tony", savannah[dartx.get](giraffe1));
+      expect$.Expect.equals("Rose", savannah[dartx.get](giraffe2));
+      let zebra1 = new savannah_test.Zebra("Paolo");
+      let zebra2 = new savannah_test.Zebra("Zeeta");
+      savannah[dartx.set](zebra1, zebra1.name);
+      savannah[dartx.set](zebra2, zebra2.name);
+      core.print(dart.str`zebra1 hash: ${zebra1.hashCode}`);
+      core.print(dart.str`zebra2 hash: ${zebra2.hashCode}`);
+      count = savannah[dartx.length];
+      core.print(dart.str`getCount is ${count}`);
+      expect$.Expect.equals(4, count);
+      core.print(dart.str`zebra1: ${savannah[dartx.get](zebra1)}`);
+      core.print(dart.str`zebra2: ${savannah[dartx.get](zebra2)}`);
+      expect$.Expect.equals("Paolo", savannah[dartx.get](zebra1));
+      expect$.Expect.equals("Zeeta", savannah[dartx.get](zebra2));
+    }
+  };
+  dart.setSignature(savannah_test.SavannahTest, {
+    statics: () => ({testMain: dart.definiteFunctionType(dart.void, [])}),
+    names: ['testMain']
+  });
+  savannah_test.main = function() {
+    savannah_test.SavannahTest.testMain();
+  };
+  dart.fn(savannah_test.main, VoidTodynamic());
+  // Exports:
+  exports.savannah_test = savannah_test;
+});