Reapply "Resolve references to "this" the same way as normal variables""

test/mjsunit/harmony/arrow-functions-this.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-arrow-functions
+
+var object = {};
+var global = this;
+var call = Function.call.bind(Function.call);
+
+var globalSloppyArrow = () => this;
+var globalStrictArrow = () => { "use strict"; return this; };
+var globalSloppyArrowEval = (s) => eval(s);
+var globalStrictArrowEval = (s) => { "use strict"; return eval(s); };
+
+var sloppyFunctionArrow = function() {
+  return (() => this)();
+};
+var strictFunctionArrow = function() {
+  "use strict";
+  return (() => this)();
+};
+var sloppyFunctionEvalArrow = function() {
+  return eval("(() => this)()");
+};
+var strictFunctionEvalArrow = function() {
+  "use strict";
+  return eval("(() => this)()");
+};
+var sloppyFunctionArrowEval = function(s) {
+  return (() => eval(s))();
+};
+var strictFunctionArrowEval = function(s) {
+  "use strict";
+  return (() => eval(s))();
+};
+
+var withObject = { 'this': object }
+var arrowInsideWith, arrowInsideWithEval;
+with (withObject) {
+  arrowInsideWith = () => this;
+  arrowInsideWithEval = (s) => eval(s);
+}
+
+assertEquals(global, call(globalSloppyArrow, object));
+assertEquals(global, call(globalStrictArrow, object));
+assertEquals(global, call(globalSloppyArrowEval, object, "this"));
+assertEquals(global, call(globalStrictArrowEval, object, "this"));
+assertEquals(global, call(globalSloppyArrowEval, object, "(() => this)()"));
+assertEquals(global, call(globalStrictArrowEval, object, "(() => this)()"));
+
+assertEquals(object, call(sloppyFunctionArrow, object));
+assertEquals(global, call(sloppyFunctionArrow, undefined));
+assertEquals(object, call(strictFunctionArrow, object));
+assertEquals(undefined, call(strictFunctionArrow, undefined));
+
+assertEquals(object, call(sloppyFunctionEvalArrow, object));
+assertEquals(global, call(sloppyFunctionEvalArrow, undefined));
+assertEquals(object, call(strictFunctionEvalArrow, object));
+assertEquals(undefined, call(strictFunctionEvalArrow, undefined));
+
+assertEquals(object, call(sloppyFunctionArrowEval, object, "this"));
+assertEquals(global, call(sloppyFunctionArrowEval, undefined, "this"));
+assertEquals(object, call(strictFunctionArrowEval, object, "this"));
+assertEquals(undefined, call(strictFunctionArrowEval, undefined, "this"));
+
+assertEquals(object,
+             call(sloppyFunctionArrowEval, object, "(() => this)()"));
+assertEquals(global,
+             call(sloppyFunctionArrowEval, undefined, "(() => this)()"));
+assertEquals(object,
+             call(strictFunctionArrowEval, object, "(() => this)()"));
+assertEquals(undefined,
+             call(strictFunctionArrowEval, undefined, "(() => this)()"));
+
+assertEquals(global, call(arrowInsideWith, undefined));
+assertEquals(global, call(arrowInsideWith, object));
+assertEquals(global, call(arrowInsideWithEval, undefined, "this"));
+assertEquals(global, call(arrowInsideWithEval, object, "this"));
+assertEquals(global, call(arrowInsideWithEval, undefined, "(() => this)()"));
+assertEquals(global, call(arrowInsideWithEval, object, "(() => this)()"));