1 files changed, 85 insertions, 0 deletions
diff --git a/test/mjsunit/debug-mirror-cache.js b/test/mjsunit/debug-mirror-cache.js
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+++ b/test/mjsunit/debug-mirror-cache.js
@@ -0,0 +1,85 @@
+// Copyright 2008 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
+// The functions used for testing backtraces. They are at the top to make the
+// testing of source line/column easier.
+function f(x, y) {
+  a=1;
+};
+
+function g() {
+  new f(1);
+};
+
+
+// Get the Debug object exposed from the debug context global object.
+Debug = debug.Debug
+
+listenerCallCount = 0;
+listenerExceptionCount = 0;
+
+
+function listener(event, exec_state, event_data, data) {
+  try {
+  if (event == Debug.DebugEvent.Break)
+  {
+    listenerCallCount++;
+
+    // Check that mirror cache is cleared when entering debugger.
+    assertEquals(0, debug.next_handle_, "Mirror cache not cleared");
+    assertEquals(0, debug.mirror_cache_.length, "Mirror cache not cleared");
+
+    // Get the debug command processor.
+    var dcp = exec_state.debugCommandProcessor();
+
+    // Make a backtrace request to create some mirrors.
+    var json;
+    json = '{"seq":0,"type":"request","command":"backtrace"}'
+    dcp.processDebugJSONRequest(json);
+
+    // Some mirrors where cached.
+    assertFalse(debug.next_handle_ == 0, "Mirror cache not used");
+    assertFalse(debug.mirror_cache_.length == 0, "Mirror cache not used");
+  }
+  } catch (e) {
+    print(e);
+    listenerExceptionCount++;
+  };
+};
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+// Enter the debugger twice.
+debugger;
+debugger;
+
+// Make sure that the debug event listener vas invoked.
+assertEquals(2, listenerCallCount, "Listener not called");
+assertEquals(0, listenerExceptionCount, "Exception in listener");
+