Added a few new debugger tests.

test/mjsunit/debug-setexceptionbreak.js

Index: test/mjsunit/debug-setexceptionbreak.js
===================================================================
--- test/mjsunit/debug-setexceptionbreak.js	(revision 0)
+++ test/mjsunit/debug-setexceptionbreak.js	(revision 0)
@@ -0,0 +1,119 @@
+// Copyright 2010 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
+
+// Note: the following tests only checks the debugger handling of the
+// setexceptionbreak command.  It does not test whether the debugger
+// actually breaks on exceptions or not.  That functionality is tested
+// in test-debug.cc instead.
+
+// Simple function which stores the last debug event.
+listenerComplete = false;
+exception = false;
+
+var breakpoint = -1;
+var base_request = '"seq":0,"type":"request","command":"setexceptionbreak"'
+
+function safeEval(code) {
+  try {
+    return eval('(' + code + ')');
+  } catch (e) {
+    assertEquals(void 0, e);
+    return undefined;
+  }
+}
+
+function testArguments(dcp, arguments, success, type, enabled) {
+  var request = '{' + base_request + ',"arguments":' + arguments + '}'
+  var json_response = dcp.processDebugJSONRequest(request);
+  var response = safeEval(json_response);
+  if (success) {
+    assertTrue(response.success, json_response);
+    assertEquals(response.body.type, type);
+    assertEquals(response.body.enabled, enabled);
+  } else {
+    assertFalse(response.success, json_response);
+  }
+}
+
+function listener(event, exec_state, event_data, data) {
+  try {
+  if (event == Debug.DebugEvent.Break) {
+    // Get the debug command processor.
+    var dcp = exec_state.debugCommandProcessor("unspecified_running_state");
+
+    // Test some illegal setexceptionbreak requests.
+    var request = '{' + base_request + '}'
+    var response = safeEval(dcp.processDebugJSONRequest(request));
+    assertFalse(response.success);
+
+    testArguments(dcp, '{}', false);
+    testArguments(dcp, '{"type":0}', false);
+
+    // Test some legal setexceptionbreak requests with default.
+    // Note: by default, break on exceptions should be disabled.  Hence,
+    // the first time, we send the command with no enabled arg, the debugger
+    // should toggle it on.  The second time, it should toggle it off.
+    testArguments(dcp, '{"type":"all"}', true, "all", true);
+    testArguments(dcp, '{"type":"all"}', true, "all", false);
+    testArguments(dcp, '{"type":"uncaught"}', true, "uncaught", true);
+    testArguments(dcp, '{"type":"uncaught"}', true, "uncaught", false);
+
+    // Test some legal setexceptionbreak requests with explicit enabled arg.
+    testArguments(dcp, '{"type":"all","enabled":true}', true, "all", true);
+    testArguments(dcp, '{"type":"all","enabled":false}', true, "all", false);
+
+    testArguments(dcp, '{"type":"uncaught","enabled":true}', true,
+                  "uncaught", true);
+    testArguments(dcp, '{"type":"uncaught","enabled":false}', true,
+                  "uncaught", false);
+
+    // Indicate that all was processed.
+    listenerComplete = true;
+
+  }
+  } catch (e) {
+    exception = e
+  };
+};
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+function g() {};
+
+
+// Set a break point and call to invoke the debug event listener.
+breakpoint = Debug.setBreakPoint(g, 0, 0);
+g();
+
+// Make sure that the debug event listener vas invoked.
+assertFalse(exception, "exception in listener")
+assertTrue(listenerComplete, "listener did not run to completion");