Check in codegen test expectations.

test/codegen/expect/language/switch_scope_test.js

Index: test/codegen/expect/language/switch_scope_test.js
diff --git a/test/codegen/expect/language/switch_scope_test.js b/test/codegen/expect/language/switch_scope_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..b409b864044babaf9db95df326ebb5e871935cd8
--- /dev/null
+++ b/test/codegen/expect/language/switch_scope_test.js
@@ -0,0 +1,44 @@
+dart_library.library('language/switch_scope_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__switch_scope_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 switch_scope_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  switch_scope_test.SwitchScopeTest = class SwitchScopeTest extends core.Object {
+    static testMain() {
+      switch (1) {
+        case 1:
+        {
+          let v = 1;
+          break;
+        }
+        case 2:
+        {
+          let v = 2;
+          expect$.Expect.equals(2, v);
+          break;
+        }
+        default:
+        {
+          let v = 3;
+          break;
+        }
+      }
+    }
+  };
+  dart.setSignature(switch_scope_test.SwitchScopeTest, {
+    statics: () => ({testMain: dart.definiteFunctionType(dart.dynamic, [])}),
+    names: ['testMain']
+  });
+  switch_scope_test.main = function() {
+    switch_scope_test.SwitchScopeTest.testMain();
+  };
+  dart.fn(switch_scope_test.main, VoidTodynamic());
+  // Exports:
+  exports.switch_scope_test = switch_scope_test;
+});