[debugger] Further stepping support in test wrapper

test/mjsunit/debug-stepin-builtin.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.
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-//       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;
-var state = 1;
-var expected_source_line_text = null;
-var expected_function_name = null;
-
-// Simple debug event handler which first time will cause 'step in' action
-// and than check that execution is paused inside function
-// expected_function_name.
-function listener(event, exec_state, event_data, data) {
-  try {
-    if (event == Debug.DebugEvent.Break) {
-      if (state == 3) {
-        assertEquals(expected_function_name, event_data.func().name());
-        assertEquals(expected_source_line_text,
-                     event_data.sourceLineText());
-        state = 4;
-      } else {
-        exec_state.prepareStep(Debug.StepAction.StepIn);
-        state++;
-      }
-    }
-  } catch(e) {
-    exception = e;
-  }
-};
-
-// Add the debug event listener.
-Debug.setListener(listener);
-
-var a = [1,2,3,4,5];
-
-// Test step into function call from a function without local variables.
-function testStepInArraySlice() {
-  expected_function_name = 'testStepInArraySlice';
-  expected_source_line_text = '}  // expected line';
-  debugger;
-  var s = Array.prototype.slice.call(a, 2,3);
-}  // expected line
-
-state = 1;
-testStepInArraySlice();
-assertNull(exception);
-assertEquals(4, state);
-
-// Get rid of the debug event listener.
-Debug.setListener(null);