Check in codegen test expectations.

test/codegen/expect/language/string_interpolation8_test.js

Index: test/codegen/expect/language/string_interpolation8_test.js
diff --git a/test/codegen/expect/language/string_interpolation8_test.js b/test/codegen/expect/language/string_interpolation8_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..6b05bc8b601f83e0b1a4cbeee3683dfdcc8e8ed6
--- /dev/null
+++ b/test/codegen/expect/language/string_interpolation8_test.js
@@ -0,0 +1,25 @@
+dart_library.library('language/string_interpolation8_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__string_interpolation8_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 string_interpolation8_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  string_interpolation8_test.A = class A extends core.Object {};
+  string_interpolation8_test.A.x = 1;
+  dart.defineLazy(string_interpolation8_test.A, {
+    get y() {
+      return dart.str`Two is greater than ${string_interpolation8_test.A.x}`;
+    }
+  });
+  string_interpolation8_test.main = function() {
+    expect$.Expect.identical("Two is greater than 1", string_interpolation8_test.A.y);
+  };
+  dart.fn(string_interpolation8_test.main, VoidTodynamic());
+  // Exports:
+  exports.string_interpolation8_test = string_interpolation8_test;
+});