Check in codegen test expectations.

test/codegen/expect/language/expect_test.js

Index: test/codegen/expect/language/expect_test.js
diff --git a/test/codegen/expect/language/expect_test.js b/test/codegen/expect/language/expect_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..ad1a3bfa798c0f99e5a09e73141cba489d1c850f
--- /dev/null
+++ b/test/codegen/expect/language/expect_test.js
@@ -0,0 +1,110 @@
+dart_library.library('language/expect_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__expect_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 expect_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  expect_test.ExpectTest = class ExpectTest extends core.Object {
+    static testEquals(a) {
+      try {
+        expect$.Expect.equals("AB", a, "within testEquals");
+      } catch (msg) {
+        if (core.Exception.is(msg)) {
+          core.print(msg);
+          return;
+        } else
+          throw msg;
+      }
+
+      expect$.Expect.equals("AB", dart.str`${a}B`);
+      dart.throw("Expect.equals did not fail");
+    }
+    static testIsTrue(f) {
+      try {
+        expect$.Expect.isTrue(f);
+      } catch (msg) {
+        if (core.Exception.is(msg)) {
+          core.print(msg);
+          return;
+        } else
+          throw msg;
+      }
+
+      expect$.Expect.isFalse(f);
+      dart.throw("Expect.isTrue did not fail");
+    }
+    static testIsFalse(t) {
+      try {
+        expect$.Expect.isFalse(t);
+      } catch (msg) {
+        if (core.Exception.is(msg)) {
+          core.print(msg);
+          return;
+        } else
+          throw msg;
+      }
+
+      expect$.Expect.isTrue(t);
+      dart.throw("Expect.isFalse did not fail");
+    }
+    static testIdentical(a) {
+      let ab = dart.str`${a}B`;
+      try {
+        expect$.Expect.identical("AB", ab);
+      } catch (msg) {
+        if (core.Exception.is(msg)) {
+          core.print(msg);
+          return;
+        } else
+          throw msg;
+      }
+
+      expect$.Expect.equals("AB", ab);
+      dart.throw("Expect.identical did not fail");
+    }
+    static testFail() {
+      try {
+        expect$.Expect.fail("fail now");
+      } catch (msg) {
+        if (core.Exception.is(msg)) {
+          core.print(msg);
+          return;
+        } else
+          throw msg;
+      }
+
+      dart.throw("Expect.fail did not fail");
+    }
+    static testMain() {
+      expect_test.ExpectTest.testEquals("A");
+      expect_test.ExpectTest.testIsTrue(false);
+      expect_test.ExpectTest.testIsTrue(1);
+      expect_test.ExpectTest.testIsFalse(true);
+      expect_test.ExpectTest.testIsFalse(0);
+      expect_test.ExpectTest.testIdentical("A");
+      expect_test.ExpectTest.testFail();
+    }
+  };
+  dart.setSignature(expect_test.ExpectTest, {
+    statics: () => ({
+      testEquals: dart.definiteFunctionType(dart.dynamic, [dart.dynamic]),
+      testIsTrue: dart.definiteFunctionType(dart.dynamic, [dart.dynamic]),
+      testIsFalse: dart.definiteFunctionType(dart.dynamic, [dart.dynamic]),
+      testIdentical: dart.definiteFunctionType(dart.dynamic, [dart.dynamic]),
+      testFail: dart.definiteFunctionType(dart.dynamic, []),
+      testMain: dart.definiteFunctionType(dart.void, [])
+    }),
+    names: ['testEquals', 'testIsTrue', 'testIsFalse', 'testIdentical', 'testFail', 'testMain']
+  });
+  expect_test.main = function() {
+    expect_test.ExpectTest.testMain();
+  };
+  dart.fn(expect_test.main, VoidTodynamic());
+  // Exports:
+  exports.expect_test = expect_test;
+});