Check in codegen test expectations.

test/codegen/expect/corelib/collection_test.js

Index: test/codegen/expect/corelib/collection_test.js
diff --git a/test/codegen/expect/corelib/collection_test.js b/test/codegen/expect/corelib/collection_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..e546f5008a5cd031d2017373584cb46b41e84f3c
--- /dev/null
+++ b/test/codegen/expect/corelib/collection_test.js
@@ -0,0 +1,43 @@
+dart_library.library('corelib/collection_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__collection_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_test = Object.create(null);
+  let dynamicAnddynamicTodynamic = () => (dynamicAnddynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  collection_test.CollectionTest = class CollectionTest extends core.Object {
+    new(iterable) {
+      this.testFold(iterable);
+    }
+    testFold(iterable) {
+      expect$.Expect.equals(28, iterable[dartx.fold](dart.dynamic)(0, dart.fn((prev, element) => dart.dsend(prev, '+', element), dynamicAnddynamicTodynamic())));
+      expect$.Expect.equals(3024, iterable[dartx.fold](dart.dynamic)(1, dart.fn((prev, element) => dart.dsend(prev, '*', element), dynamicAnddynamicTodynamic())));
+    }
+  };
+  dart.setSignature(collection_test.CollectionTest, {
+    constructors: () => ({new: dart.definiteFunctionType(collection_test.CollectionTest, [core.Iterable])}),
+    methods: () => ({testFold: dart.definiteFunctionType(dart.void, [core.Iterable])})
+  });
+  let const$;
+  collection_test.main = function() {
+    let TEST_ELEMENTS = const$ || (const$ = dart.constList([4, 2, 6, 7, 9], core.int));
+    new collection_test.CollectionTest(TEST_ELEMENTS);
+    let fixedList = core.List.new(TEST_ELEMENTS[dartx.length]);
+    for (let i = 0; i < dart.notNull(TEST_ELEMENTS[dartx.length]); i++) {
+      fixedList[dartx.set](i, TEST_ELEMENTS[dartx.get](i));
+    }
+    new collection_test.CollectionTest(fixedList);
+    new collection_test.CollectionTest(core.List.from(TEST_ELEMENTS));
+    new collection_test.CollectionTest(core.Set.from(TEST_ELEMENTS));
+    new collection_test.CollectionTest(collection.Queue.from(TEST_ELEMENTS));
+  };
+  dart.fn(collection_test.main, VoidTodynamic());
+  // Exports:
+  exports.collection_test = collection_test;
+});