1// Copyright 2008 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Flags: --expose-debug-as debug
29// Get the Debug object exposed from the debug context global object.
30Debug = debug.Debug
31
32listenerComplete = false;
33exception = false;
34
35// The base part of all evaluate requests.
36var base_request = '"seq":0,"type":"request","command":"evaluate"'
37
38function safeEval(code) {
39  try {
40    return eval('(' + code + ')');
41  } catch (e) {
42    assertEquals(void 0, e);
43    return undefined;
44  }
45}
46
47function testRequest(dcp, arguments, success, result) {
48  // Generate request with the supplied arguments.
49  var request;
50  if (arguments) {
51    request = '{' + base_request + ',"arguments":' + arguments + '}';
52  } else {
53    request = '{' + base_request + '}'
54  }
55  var response = safeEval(dcp.processDebugJSONRequest(request));
56  if (success) {
57    assertTrue(response.success, request + ' -> ' + response.message);
58    assertEquals(result, response.body.value);
59  } else {
60    assertFalse(response.success, request + ' -> ' + response.message);
61  }
62  assertEquals(response.running, "unspecified_running_state",
63               request + ' -> expected not running');
64}
65
66function listener(event, exec_state, event_data, data) {
67  try {
68    if (event == Debug.DebugEvent.Break) {
69      // Get the debug command processor.
70      var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
71
72      // Test some illegal evaluate requests.
73      testRequest(dcp, void 0, false);
74      testRequest(dcp, '{"expression":"1","global"=true}', false);
75      testRequest(dcp, '{"expression":"a","frame":4}', false);
76
77      // Test some legal evaluate requests.
78      testRequest(dcp, '{"expression":"1+2"}', true, 3);
79      testRequest(dcp, '{"expression":"a+2"}', true, 5);
80      testRequest(dcp, '{"expression":"({\\"a\\":1,\\"b\\":2}).b+2"}', true, 4);
81
82      // Test evaluation of a in the stack frames and the global context.
83      testRequest(dcp, '{"expression":"a"}', true, 3);
84      testRequest(dcp, '{"expression":"a","frame":0}', true, 3);
85      testRequest(dcp, '{"expression":"a","frame":1}', true, 2);
86      testRequest(dcp, '{"expression":"a","frame":2}', true, 1);
87      testRequest(dcp, '{"expression":"a","global":true}', true, 1);
88      testRequest(dcp, '{"expression":"this.a","global":true}', true, 1);
89
90      // Test that the whole string text is returned if maxStringLength
91      // parameter is passed.
92      testRequest(
93          dcp,
94          '{"expression":"this.longString","global":true,"maxStringLength":-1}',
95          true,
96          longString);
97      testRequest(
98          dcp,
99          '{"expression":"this.longString","global":true,"maxStringLength":' +
100              longString.length + '}',
101          true,
102          longString);
103      var truncatedStringSuffix = '... (length: ' + longString.length + ')';
104      testRequest(
105          dcp,
106          '{"expression":"this.longString","global":true,"maxStringLength":0}',
107          true,
108          truncatedStringSuffix);
109      testRequest(
110          dcp,
111          '{"expression":"this.longString","global":true,"maxStringLength":1}',
112          true,
113          longString.charAt(0) + truncatedStringSuffix);
114      // Test that by default string is truncated to first 80 chars.
115      testRequest(
116          dcp,
117          '{"expression":"this.longString","global":true}',
118          true,
119          longString.substring(0, 80) + truncatedStringSuffix);
120
121      // Indicate that all was processed.
122      listenerComplete = true;
123    }
124  } catch (e) {
125   exception = e
126  };
127};
128
129// Add the debug event listener.
130Debug.setListener(listener);
131
132function f() {
133  var a = 3;
134};
135
136function g() {
137  var a = 2;
138  f();
139  return a;  // Use the value to prevent it being removed by DCE.
140};
141
142a = 1;
143
144// String which is longer than 80 chars.
145var longString = "1234567890_";
146for (var i = 0; i < 4; i++) {
147  longString += longString;
148}
149
150// Set a break point at return in f and invoke g to hit the breakpoint.
151Debug.setBreakPoint(f, 2, 0);
152g();
153
154assertFalse(exception, "exception in listener")
155// Make sure that the debug event listener vas invoked.
156assertTrue(listenerComplete, "listener did not run to completion");
157