Add debugger protocol request for setting global flags.

test/mjsunit/debug-flags.js

Index: test/mjsunit/debug-flags.js
diff --git a/test/mjsunit/debug-flags.js b/test/mjsunit/debug-flags.js
new file mode 100644
index 0000000000000000000000000000000000000000..2352a3c2b69db6d350905144dd4d3f2ed484a1a9
--- /dev/null
+++ b/test/mjsunit/debug-flags.js
@@ -0,0 +1,104 @@
+// 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
+
+// Simple function which stores the last debug event.
+listenerComplete = false;
+exception = false;
+
+var base_request = '"seq":0,"type":"request","command":"flags"'
+
+function safeEval(code) {
+  try {
+    return eval('(' + code + ')');
+  } catch (e) {
+    assertEquals(void 0, e);
+    return undefined;
+  }
+}
+
+function testArguments(dcp, arguments, success) {
+  var request = '{' + base_request + ',"arguments":' + arguments + '}'
+  var json_response = dcp.processDebugJSONRequest(request);
+  var response = safeEval(json_response);
+  if (success) {
+    assertTrue(response.success, json_response);
+  } 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 requests.
+    var request = '{' + base_request + '}'
+    var response = safeEval(dcp.processDebugJSONRequest(request));
+    assertFalse(response.success);
+
+    // Test some legal requests.
+    var legal_requests  = [
+      '{}',
+      '{"flags":[]}',
+      '{"flags":[{"name":"break_points_activated","value":true}]}',
+      '{"flags":[{"name":"break_points_activated","value":false}]}',
+      '{"flags":[{"name":"break_points_activated"}]}',
+      '{"flags":[{"name":"unknown_flag_name","value":true}]}',
+      '{"flags":[{"name":"unknown_flag_name"},' +
+          '{"name":"break_points_activated"}]}'
+    ];
+    for (var i = 0; i < legal_requests.length; i++) {
+      testArguments(dcp, legal_requests[i], true);
+    }
+
+    // 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.
+bp = Debug.setBreakPoint(g, 0, 0);
+assertEquals(1, bp);
+g();
+
+// Make sure that the debug event listener was invoked.
+assertTrue(listenerComplete, "listener did not run to completion");
+assertFalse(exception, "exception in listener")