debug-stepin-constructor.js 2.79 KB
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// Copyright 2008 the V8 project authors. All rights reserved.
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// 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

// Simple debug event handler which counts the number of breaks hit and steps.
var break_break_point_hit_count = 0;
function listener(event, exec_state, event_data, data) {
  if (event == Debug.DebugEvent.Break) {
    break_break_point_hit_count++;
    // Continue stepping until returned to bottom frame.
    if (exec_state.frameCount() > 1) {
      exec_state.prepareStep(Debug.StepAction.StepIn);
    }
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    // Test that there is a script.
    assertTrue(typeof(event_data.func().script()) == 'object');
  }
};

// Add the debug event listener.
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Debug.setListener(listener);
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// Test step into constructor with simple constructor.
function X() {
}

function f() {
  debugger;
  new X();
};

break_break_point_hit_count = 0;
f();
assertEquals(5, break_break_point_hit_count);
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f();
assertEquals(10, break_break_point_hit_count);
f();
assertEquals(15, break_break_point_hit_count);
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// Test step into constructor with builtin constructor.
function g() {
  debugger;
  new Date();
};

break_break_point_hit_count = 0;
g();
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assertEquals(4, break_break_point_hit_count);
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// Get rid of the debug event listener.
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Debug.setListener(null);