JezK
Edit File: debug-evaluate.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Flags: --expose-debug-as debug // Get the Debug object exposed from the debug context global object. Debug = debug.Debug listenerComplete = false; exception = false; // The base part of all evaluate requests. var base_request = '"seq":0,"type":"request","command":"evaluate"' function safeEval(code) { try { return eval('(' + code + ')'); } catch (e) { assertEquals(void 0, e); return undefined; } } function testRequest(dcp, arguments, success, result) { // Generate request with the supplied arguments. var request; if (arguments) { request = '{' + base_request + ',"arguments":' + arguments + '}'; } else { request = '{' + base_request + '}' } var response = safeEval(dcp.processDebugJSONRequest(request)); if (success) { assertTrue(response.success, request + ' -> ' + response.message); assertEquals(result, response.body.value); } else { assertFalse(response.success, request + ' -> ' + response.message); } assertEquals(response.running, "unspecified_running_state", request + ' -> expected not running'); } function listener(event, exec_state, event_data, data) { try { if (event == Debug.DebugEvent.Break) { // Get the debug command processor. var dcp = exec_state.debugCommandProcessor("unspecified_running_state"); // Test some illegal evaluate requests. testRequest(dcp, void 0, false); testRequest(dcp, '{"expression":"1","global"=true}', false); testRequest(dcp, '{"expression":"a","frame":4}', false); // Test some legal evaluate requests. testRequest(dcp, '{"expression":"1+2"}', true, 3); testRequest(dcp, '{"expression":"a+2"}', true, 5); testRequest(dcp, '{"expression":"({\\"a\\":1,\\"b\\":2}).b+2"}', true, 4); // Test evaluation of a in the stack frames and the global context. testRequest(dcp, '{"expression":"a"}', true, 3); testRequest(dcp, '{"expression":"a","frame":0}', true, 3); testRequest(dcp, '{"expression":"a","frame":1}', true, 2); testRequest(dcp, '{"expression":"a","frame":2}', true, 1); testRequest(dcp, '{"expression":"a","global":true}', true, 1); testRequest(dcp, '{"expression":"this.a","global":true}', true, 1); // Test that the whole string text is returned if maxStringLength // parameter is passed. testRequest( dcp, '{"expression":"this.longString","global":true,"maxStringLength":-1}', true, longString); testRequest( dcp, '{"expression":"this.longString","global":true,"maxStringLength":' + longString.length + '}', true, longString); var truncatedStringSuffix = '... (length: ' + longString.length + ')'; testRequest( dcp, '{"expression":"this.longString","global":true,"maxStringLength":0}', true, truncatedStringSuffix); testRequest( dcp, '{"expression":"this.longString","global":true,"maxStringLength":1}', true, longString.charAt(0) + truncatedStringSuffix); // Test that by default string is truncated to first 80 chars. testRequest( dcp, '{"expression":"this.longString","global":true}', true, longString.substring(0, 80) + truncatedStringSuffix); // Indicate that all was processed. listenerComplete = true; } } catch (e) { exception = e }; }; // Add the debug event listener. Debug.setListener(listener); function f() { var a = 3; }; function g() { var a = 2; f(); }; a = 1; // String which is longer than 80 chars. var longString = "1234567890_"; for (var i = 0; i < 4; i++) { longString += longString; } // Set a break point at return in f and invoke g to hit the breakpoint. Debug.setBreakPoint(f, 2, 0); g(); assertFalse(exception, "exception in listener") // Make sure that the debug event listener vas invoked. assertTrue(listenerComplete, "listener did not run to completion");