Check in codegen test expectations.

test/codegen/expect/language/constructor4_test.js

Index: test/codegen/expect/language/constructor4_test.js
diff --git a/test/codegen/expect/language/constructor4_test.js b/test/codegen/expect/language/constructor4_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..8842b17f0a9005acbe48525bfcda34824467731f
--- /dev/null
+++ b/test/codegen/expect/language/constructor4_test.js
@@ -0,0 +1,45 @@
+dart_library.library('language/constructor4_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__constructor4_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 constructor4_test = Object.create(null);
+  let intToint = () => (intToint = dart.constFn(dart.definiteFunctionType(core.int, [core.int])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  constructor4_test.trace = "";
+  constructor4_test.E = function(i) {
+    constructor4_test.trace = dart.notNull(constructor4_test.trace) + dart.str`${i}-`;
+    return i;
+  };
+  dart.fn(constructor4_test.E, intToint());
+  constructor4_test.A = class A extends core.Object {
+    new() {
+      this.a1 = constructor4_test.E(2);
+      constructor4_test.E(3);
+    }
+  };
+  dart.setSignature(constructor4_test.A, {
+    constructors: () => ({new: dart.definiteFunctionType(constructor4_test.A, [])})
+  });
+  constructor4_test.B = class B extends constructor4_test.A {
+    new(x) {
+      this.b1 = constructor4_test.E(1);
+      super.new();
+      constructor4_test.E(4);
+    }
+  };
+  dart.setSignature(constructor4_test.B, {
+    constructors: () => ({new: dart.definiteFunctionType(constructor4_test.B, [dart.dynamic])})
+  });
+  constructor4_test.main = function() {
+    let b = new constructor4_test.B(0);
+    expect$.Expect.equals("1-2-3-4-", constructor4_test.trace);
+  };
+  dart.fn(constructor4_test.main, VoidTodynamic());
+  // Exports:
+  exports.constructor4_test = constructor4_test;
+});