| // Copyright 2017 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. |
| |
| // Test that declaring local variables in IIFEs works with |
| // side-effect free debug-evaluate. |
| |
| Debug = debug.Debug |
| |
| var exception = null; |
| |
| function listener(event, exec_state, event_data, data) { |
| if (event != Debug.DebugEvent.Break) return; |
| try { |
| function success(expectation, source) { |
| assertEquals(expectation, |
| exec_state.frame(0).evaluate(source, true).value()); |
| } |
| function fail(source) { |
| assertThrows(() => exec_state.frame(0).evaluate(source, true), |
| EvalError); |
| } |
| // Declaring 'a' sets a property to the global object. |
| fail("var a = 3"); |
| exec_state.frame(0).evaluate("var a = 2", false); |
| assertEquals(2, a); |
| // Wrapping into an IIFE would be fine, since 'a' is local. |
| success(100, |
| `(function(x) { |
| var a = 0; |
| for (var i = 0; i < x; i++) { |
| a += x; |
| } |
| return a; |
| })(10);`); |
| success(100, |
| `(x => { |
| let a = 0; |
| for (var i = 0; i < x; i++) { |
| a += x; |
| } |
| return a; |
| })(10);`); |
| // Not using 'var' to declare would make the access go to global object. |
| fail( `(function(x) { |
| a = 0; |
| for (var i = 0; i < x; i++) { |
| a += x; |
| } |
| return a; |
| })(10);`); |
| } catch (e) { |
| exception = e; |
| print(e, e.stack); |
| }; |
| }; |
| |
| // Add the debug event listener. |
| Debug.setListener(listener); |
| |
| function f() { |
| debugger; |
| }; |
| |
| f(); |
| |
| assertNull(exception); |