Check in codegen test expectations.

test/codegen/expect/language/infinity_test.js

Index: test/codegen/expect/language/infinity_test.js
diff --git a/test/codegen/expect/language/infinity_test.js b/test/codegen/expect/language/infinity_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..00959f14ebe74f50fe4cb40cac8e9e09c37fa774
--- /dev/null
+++ b/test/codegen/expect/language/infinity_test.js
@@ -0,0 +1,31 @@
+dart_library.library('language/infinity_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__infinity_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 infinity_test = Object.create(null);
+  let JSArrayOfnum = () => (JSArrayOfnum = dart.constFn(_interceptors.JSArray$(core.num)))();
+  let intToint = () => (intToint = dart.constFn(dart.definiteFunctionType(core.int, [core.int])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  infinity_test.inscrutable = function(x) {
+    return x == 0 ? 0 : (dart.notNull(x) | dart.notNull(infinity_test.inscrutable((dart.notNull(x) & dart.notNull(x) - 1) >>> 0))) >>> 0;
+  };
+  dart.fn(infinity_test.inscrutable, intToint());
+  infinity_test.main = function() {
+    let things = JSArrayOfnum().of([0, core.double.INFINITY, core.double.NEGATIVE_INFINITY]);
+    let first = things[dartx.get](1);
+    let second = things[dartx.get](2);
+    expect$.Expect.isFalse(typeof first == 'number');
+    expect$.Expect.isFalse(typeof second == 'number');
+    expect$.Expect.isTrue(typeof first == 'number');
+    expect$.Expect.isTrue(typeof second == 'number');
+  };
+  dart.fn(infinity_test.main, VoidTodynamic());
+  // Exports:
+  exports.infinity_test = infinity_test;
+});