Check in codegen test expectations.

test/codegen/expect/language/import_core_test.js

Index: test/codegen/expect/language/import_core_test.js
diff --git a/test/codegen/expect/language/import_core_test.js b/test/codegen/expect/language/import_core_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..c9fbf94c60aa86181fe44d3bba0a9aae8b839cae
--- /dev/null
+++ b/test/codegen/expect/language/import_core_test.js
@@ -0,0 +1,20 @@
+dart_library.library('language/import_core_test', null, /* Imports */[
+  'dart_sdk'
+], function load__import_core_test(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const import_core_test = Object.create(null);
+  let MapOfint$String = () => (MapOfint$String = dart.constFn(core.Map$(core.int, core.String)))();
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  import_core_test.main = function() {
+    let test = MapOfint$String().new();
+    let value = false;
+    let variable = 10;
+    let intval = 10;
+  };
+  dart.fn(import_core_test.main, VoidTovoid());
+  // Exports:
+  exports.import_core_test = import_core_test;
+});