[debugger] Various break-related functionality in test wrapper

test/mjsunit/debug-step-3.js

-// Copyright 2011 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
-
-// This test tests that full code compiled without debug break slots
-// is recompiled with debug break slots when debugging is started.
-
-// Get the Debug object exposed from the debug context global object.
-Debug = debug.Debug
-
-var bp;
-var done = false;
-var step_count = 0;
-var set_bp = false
-
-// Debug event listener which steps until the global variable done is true.
-function listener(event, exec_state, event_data, data) {
-  if (event == Debug.DebugEvent.Break) {
-    if (!done) exec_state.prepareStep(Debug.StepAction.StepNext);
-    step_count++;
-  }
-};
-
-// Set the global variables state to prpare the stepping test.
-function prepare_step_test() {
-  done = false;
-  step_count = 0;
-}
-
-// Test function to step through.
-function f() {
-  var a = 0;
-  if (set_bp) { bp = Debug.setBreakPoint(f, 3); }
-  var i = 1;
-  var j = 2;
-  done = true;
-};
-
-prepare_step_test();
-f();
-
-// Add the debug event listener.
-Debug.setListener(listener);
-
-// Make f set a breakpoint with an activation on the stack.
-prepare_step_test();
-set_bp = true;
-f();
-// TODO(1782): Fix issue to bring back this assert.
-//assertEquals(4, step_count);
-Debug.clearBreakPoint(bp);
-
-// Set a breakpoint on the first var statement (line 1).
-set_bp = false;
-bp = Debug.setBreakPoint(f, 3);
-
-// Step through the function ensuring that the var statements are hit as well.
-prepare_step_test();
-f();
-assertEquals(4, step_count);
-
-// Clear the breakpoint and check that no stepping happens.
-Debug.clearBreakPoint(bp);
-prepare_step_test();
-f();
-assertEquals(0, step_count);
-
-// Get rid of the debug event listener.
-Debug.setListener(null);