Check in codegen test expectations.

test/codegen/expect/language/switch_label2_test.js

+dart_library.library('language/switch_label2_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__switch_label2_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const _interceptors = dart_sdk._interceptors;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const switch_label2_test = Object.create(null);
+  let JSArrayOfint = () => (JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))();
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  let intAndListTovoid = () => (intAndListTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [core.int, core.List])))();
+  switch_label2_test.main = function() {
+    switch_label2_test.doSwitch(0, JSArrayOfint().of([0, 2]));
+    switch_label2_test.doSwitch(1, JSArrayOfint().of([1]));
+    switch_label2_test.doSwitch(2, JSArrayOfint().of([2]));
+    switch_label2_test.doSwitch(3, JSArrayOfint().of([3, 1]));
+  };
+  dart.fn(switch_label2_test.main, VoidTovoid());
+  switch_label2_test.doSwitch = function(target, expect) {
+    let list = [];
+    switch (target) {
+      case 0:
+      {
+        list[dartx.add](0);
+        continue case2;
+      }
+      case 1:
+      {
+        // Unimplemented case labels: [case1:]
+        list[dartx.add](1);
+        break;
+      }
+      case 2:
+      {
+        // Unimplemented case labels: [case2:]
+        list[dartx.add](2);
+        break;
+      }
+      case 3:
+      {
+        list[dartx.add](3);
+        continue case1;
+      }
+    }
+    expect$.Expect.listEquals(expect, list);
+  };
+  dart.fn(switch_label2_test.doSwitch, intAndListTovoid());
+  // Exports:
+  exports.switch_label2_test = switch_label2_test;
+});