Check in codegen test expectations.

test/codegen/expect/corelib/collection_from_test.js

Index: test/codegen/expect/corelib/collection_from_test.js
diff --git a/test/codegen/expect/corelib/collection_from_test.js b/test/codegen/expect/corelib/collection_from_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..63e74c7c818acd967c26b6df0a832937d169068e
--- /dev/null
+++ b/test/codegen/expect/corelib/collection_from_test.js
@@ -0,0 +1,58 @@
+dart_library.library('corelib/collection_from_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__collection_from_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const collection = dart_sdk.collection;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const collection_from_test = Object.create(null);
+  let SetOfint = () => (SetOfint = dart.constFn(core.Set$(core.int)))();
+  let ListOfint = () => (ListOfint = dart.constFn(core.List$(core.int)))();
+  let QueueOfint = () => (QueueOfint = dart.constFn(collection.Queue$(core.int)))();
+  let dynamicTovoid = () => (dynamicTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  collection_from_test.CollectionFromTest = class CollectionFromTest extends core.Object {
+    static testMain() {
+      let set = SetOfint().new();
+      set.add(1);
+      set.add(2);
+      set.add(4);
+      collection_from_test.CollectionFromTest.check(set, ListOfint().from(set));
+      collection_from_test.CollectionFromTest.check(set, core.List.from(set));
+      collection_from_test.CollectionFromTest.check(set, QueueOfint().from(set));
+      collection_from_test.CollectionFromTest.check(set, collection.Queue.from(set));
+      collection_from_test.CollectionFromTest.check(set, SetOfint().from(set));
+      collection_from_test.CollectionFromTest.check(set, core.Set.from(set));
+    }
+    static check(initial, other) {
+      expect$.Expect.equals(3, initial[dartx.length]);
+      expect$.Expect.equals(initial[dartx.length], other[dartx.length]);
+      let initialSum = 0;
+      let otherSum = 0;
+      initial[dartx.forEach](dart.fn(e => {
+        initialSum = dart.notNull(initialSum) + dart.notNull(core.int._check(e));
+      }, dynamicTovoid()));
+      other[dartx.forEach](dart.fn(e => {
+        otherSum = dart.notNull(otherSum) + dart.notNull(core.int._check(e));
+      }, dynamicTovoid()));
+      expect$.Expect.equals(4 + 2 + 1, otherSum);
+      expect$.Expect.equals(otherSum, initialSum);
+    }
+  };
+  dart.setSignature(collection_from_test.CollectionFromTest, {
+    statics: () => ({
+      testMain: dart.definiteFunctionType(dart.dynamic, []),
+      check: dart.definiteFunctionType(dart.dynamic, [core.Iterable, core.Iterable])
+    }),
+    names: ['testMain', 'check']
+  });
+  collection_from_test.main = function() {
+    collection_from_test.CollectionFromTest.testMain();
+  };
+  dart.fn(collection_from_test.main, VoidTodynamic());
+  // Exports:
+  exports.collection_from_test = collection_from_test;
+});