Handle vmservice messages while at breakpoint.

runtime/vm/debugger_test.cc

Index: runtime/vm/debugger_test.cc
===================================================================
--- runtime/vm/debugger_test.cc	(revision 0)
+++ runtime/vm/debugger_test.cc	(working copy)
@@ -0,0 +1,57 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#include "vm/debugger.h"
+#include "vm/unit_test.h"
+
+namespace dart {
+
+TEST_CASE(Debugger_PrintBreakpointsToJSONArray) {
+  const char* kScriptChars =
+      "void main() {\n"
+      "  print('won');\n"
+      "  print('too');\n"
+      "  print('free');\n"
+      "  print('for');\n"
+      "}\n";
+  Dart_Handle lib = TestCase::LoadTestScript(kScriptChars, NULL);
+  EXPECT_VALID(lib);
+
+  Isolate* isolate = Isolate::Current();
+  Debugger* debugger = isolate->debugger();
+  const String& url = String::Handle(String::New(TestCase::url()));
+
+  // Empty case.
+  {
+    JSONStream js;
+    {
+      JSONArray jsarr(&js);
+      debugger->PrintBreakpointsToJSONArray(&jsarr);
+    }
+    EXPECT_STREQ("[]", js.ToCString());
+  }
+
+  // Test with a couple of breakpoints.
+  debugger->SetBreakpointAtLine(url, 2);
+  debugger->SetBreakpointAtLine(url, 3);
+  {
+    JSONStream js;
+    {
+      JSONArray jsarr(&js);
+      debugger->PrintBreakpointsToJSONArray(&jsarr);
+    }
+    EXPECT_STREQ(
+       "[{\"type\":\"Breakpoint\",\"id\":2,"
+         "\"enabled\":true,\"resolved\":false,"
+         "\"location\":{\"type\":\"Location\",\"libId\":12,"
+                       "\"script\":\"dart:test-lib\",\"tokenPos\":12}},"
+        "{\"type\":\"Breakpoint\",\"id\":1,"
+         "\"enabled\":true,\"resolved\":false,"
+         "\"location\":{\"type\":\"Location\",\"libId\":12,"
+                       "\"script\":\"dart:test-lib\",\"tokenPos\":6}}]",
+       js.ToCString());
+  }
+}
+
+}  // namespace dart