v8/test/mjsunit/debug-setbreakpoint.js

// Copyright 2008 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
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//       copyright notice, this list of conditions and the following
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//       with the distribution.
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// Flags: --expose-debug-as debug
// Get the Debug object exposed from the debug context global object.
Debug = debug.Debug

// Simple function which stores the last debug event.
var listenerComplete = false;
var exception = false;
var f_script_id = 0;
var g_script_id = 0;
var h_script_id = 0;
var f_line = 0;
var g_line = 0;

var base_request = '"seq":0,"type":"request","command":"setbreakpoint"'

function safeEval(code) {
  try {
    return eval('(' + code + ')');
  } catch (e) {
    assertEquals(void 0, e);
    return undefined;
  }
}

function testArguments(dcp, arguments, success, is_script) {
  var request = '{' + base_request + ',"arguments":' + arguments + '}'
  var json_response = dcp.processDebugJSONRequest(request);
  var response = safeEval(json_response);
  if (success) {
    assertTrue(response.success, request + ' -> ' + json_response);
    if (is_script) {
      assertEquals('scriptName', response.body.type, request + ' -> ' + json_response);
    } else {
      assertEquals('scriptId', response.body.type, request + ' -> ' + json_response);
    }
  } else {
    assertFalse(response.success, request + ' -> ' + json_response);
  }
}

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 setbreakpoint requests.
    var request = '{' + base_request + '}'
    var response = safeEval(dcp.processDebugJSONRequest(request));
    assertFalse(response.success);
    
    var mirror;

    testArguments(dcp, '{}', false);
    testArguments(dcp, '{"type":"xx"}', false);
    testArguments(dcp, '{"type":"function"}', false);
    testArguments(dcp, '{"type":"script"}', false);
    testArguments(dcp, '{"target":"f"}', false);
    testArguments(dcp, '{"type":"xx","target":"xx"}', false);
    testArguments(dcp, '{"type":"function","target":1}', false);
    testArguments(dcp, '{"type":"function","target":"f","line":-1}', false);
    testArguments(dcp, '{"type":"function","target":"f","column":-1}', false);
    testArguments(dcp, '{"type":"function","target":"f","ignoreCount":-1}', false);
    testArguments(dcp, '{"type":"handle","target":"-1"}', false);
    mirror = debug.MakeMirror(o);
    testArguments(dcp, '{"type":"handle","target":' + mirror.handle() + '}', false);

    // Test some legal setbreakpoint requests.
    testArguments(dcp, '{"type":"function","target":"f"}', true, false);
    testArguments(dcp, '{"type":"function","target":"h"}', true, false);
    testArguments(dcp, '{"type":"function","target":"f","line":1}', true, false);
    testArguments(dcp, '{"type":"function","target":"f","position":1}', true, false);
    testArguments(dcp, '{"type":"function","target":"f","condition":"i == 1"}', true, false);
    testArguments(dcp, '{"type":"function","target":"f","enabled":true}', true, false);
    testArguments(dcp, '{"type":"function","target":"f","enabled":false}', true, false);
    testArguments(dcp, '{"type":"function","target":"f","ignoreCount":7}', true, false);

    testArguments(dcp, '{"type":"script","target":"test"}', true, true);
    testArguments(dcp, '{"type":"script","target":"test"}', true, true);
    testArguments(dcp, '{"type":"script","target":"test","line":1}', true, true);
    testArguments(dcp, '{"type":"script","target":"test","column":1}', true, true);

    testArguments(dcp, '{"type":"scriptId","target":' + f_script_id + ',"line":' + f_line + '}', true, false);
    testArguments(dcp, '{"type":"scriptId","target":' + g_script_id + ',"line":' + g_line + '}', true, false);
    testArguments(dcp, '{"type":"scriptId","target":' + h_script_id + ',"line":' + h_line + '}', true, false);

    mirror = debug.MakeMirror(f);
    testArguments(dcp, '{"type":"handle","target":' + mirror.handle() + '}', true, false);
    mirror = debug.MakeMirror(o.a);
    testArguments(dcp, '{"type":"handle","target":' + mirror.handle() + '}', true, false);

    // Indicate that all was processed.
    listenerComplete = true;
  }
  } catch (e) {
    exception = e
  };
};

// Add the debug event listener.
Debug.setListener(listener);

function f() {
  a=1
};

function g() {
  f();
};

eval('function h(){}');

o = {a:function(){},b:function(){}}

// Check the script ids for the test functions.
f_script_id = Debug.findScript(f).id;
g_script_id = Debug.findScript(g).id;
h_script_id = Debug.findScript(h).id;
assertTrue(f_script_id > 0, "invalid script id for f");
assertTrue(g_script_id > 0, "invalid script id for g");
assertTrue(h_script_id > 0, "invalid script id for h");
assertEquals(f_script_id, g_script_id);

// Get the source line for the test functions.
f_line = Debug.findFunctionSourceLocation(f).line;
g_line = Debug.findFunctionSourceLocation(g).line;
h_line = Debug.findFunctionSourceLocation(h).line;
assertTrue(f_line > 0, "invalid line for f");
assertTrue(g_line > 0, "invalid line for g");
assertTrue(f_line < g_line);
assertEquals(h_line, 0, "invalid line for h");

// Set a break point and call to invoke the debug event listener.
Debug.setBreakPoint(g, 0, 0);
g();

// Make sure that the debug event listener vas invoked.
assertTrue(listenerComplete, "listener did not run to completion: " + exception);