[debugger] Further stepping support in test wrapper

test/mjsunit/debug-stepout-recursive-function.js

-// Copyright 2009 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
-
-var exception = null;
-
-// Simple debug event handler which counts the number of breaks hit and steps.
-var break_point_hit_count = 0;
-function listener(event, exec_state, event_data, data) {
-  try {
-    if (event == Debug.DebugEvent.Break) {
-      break_point_hit_count++;
-      // Continue stepping until returned to bottom frame.
-      if (exec_state.frameCount() > 1) {
-        exec_state.prepareStep(Debug.StepAction.StepOut);
-      }
-
-    }
-  } catch(e) {
-    exception = e;
-  }
-
-};
-
-function BeginTest(name) {
-  test_name = name;
-  break_point_hit_count = 0;
-  exception = null;
-}
-
-function EndTest(expected_break_point_hit_count) {
-  assertEquals(expected_break_point_hit_count, break_point_hit_count, test_name);
-  assertNull(exception, test_name);
-  test_name = null;
-}
-
-// Add the debug event listener.
-Debug.setListener(listener);
-
-
-var shouldBreak = null;
-function fact(x) {
-  if (shouldBreak(x)) {
-    debugger;
-  }
-  if (x < 2) {
-    return 1;
-  } else {
-    return x*fact(x-1);
-  }
-}
-
-BeginTest('Test 1');
-shouldBreak = function(x) { return x == 3; };
-fact(3);
-EndTest(2);
-
-BeginTest('Test 2');
-shouldBreak = function(x) { return x == 2; };
-fact(3);
-EndTest(3);
-
-BeginTest('Test 3');
-shouldBreak = function(x) { return x == 1; };
-fact(3);
-EndTest(4);
-
-BeginTest('Test 4');
-shouldBreak = function(x) { return x == 1 || x == 3; };
-fact(3);
-EndTest(5);
-
-// Get rid of the debug event listener.
-Debug.setListener(null);