Check in codegen test expectations.

test/codegen/expect/language/regress_18865_test.js

Index: test/codegen/expect/language/regress_18865_test.js
diff --git a/test/codegen/expect/language/regress_18865_test.js b/test/codegen/expect/language/regress_18865_test.js
new file mode 100644
index 0000000000000000000000000000000000000000..945abdcf183cac357169194bc49ad7ad56a66cb6
--- /dev/null
+++ b/test/codegen/expect/language/regress_18865_test.js
@@ -0,0 +1,37 @@
+dart_library.library('language/regress_18865_test', null, /* Imports */[
+  'dart_sdk'
+], function load__regress_18865_test(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const regress_18865_test = Object.create(null);
+  let B = () => (B = dart.constFn(regress_18865_test.B$()))();
+  let A = () => (A = dart.constFn(regress_18865_test.A$()))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  regress_18865_test.B$ = dart.generic(T => {
+    class B extends core.Object {}
+    dart.addTypeTests(B);
+    return B;
+  });
+  regress_18865_test.B = B();
+  regress_18865_test.A$ = dart.generic(T => {
+    class A extends regress_18865_test.B {
+      static foo() {
+        return new regress_18865_test.A();
+      }
+    }
+    dart.setSignature(A, {
+      statics: () => ({foo: dart.definiteFunctionType(dart.dynamic, [])}),
+      names: ['foo']
+    });
+    return A;
+  });
+  regress_18865_test.A = A();
+  regress_18865_test.main = function() {
+    regress_18865_test.A.foo();
+  };
+  dart.fn(regress_18865_test.main, VoidTodynamic());
+  // Exports:
+  exports.regress_18865_test = regress_18865_test;
+});