[shill] Add signal emitting to adaptor interfaces

BUG=chromium-os:16063
TEST=unit tests

Change-Id: Ib94cd3c27af5fb64202da42594f98b864b0e158b
Reviewed-on: http://gerrit.chromium.org/gerrit/2009
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
diff --git a/dbus_adaptor_unittest.cc b/dbus_adaptor_unittest.cc
new file mode 100644
index 0000000..358e5e8
--- /dev/null
+++ b/dbus_adaptor_unittest.cc
@@ -0,0 +1,53 @@
+// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "shill/device_dbus_adaptor.h"
+
+#include <string>
+
+#include <dbus-c++/dbus.h>
+#include <gtest/gtest.h>
+#include <gmock/gmock.h>
+
+namespace shill {
+using ::testing::Test;
+using ::testing::_;
+using ::testing::NiceMock;
+using ::testing::Return;
+
+class DBusAdaptorTest : public Test {
+ public:
+  DBusAdaptorTest() {}
+  virtual ~DBusAdaptorTest() {}
+};
+
+TEST_F(DBusAdaptorTest, Conversions) {
+  bool expected = false;
+  EXPECT_EQ(expected, DBusAdaptor::BoolToVariant(expected).reader().get_bool());
+  expected = true;
+  EXPECT_EQ(expected, DBusAdaptor::BoolToVariant(expected).reader().get_bool());
+
+  uint32 ex_uint = 0;
+  EXPECT_EQ(ex_uint,
+            DBusAdaptor::UInt32ToVariant(ex_uint).reader().get_uint32());
+  ex_uint = 128;
+  EXPECT_EQ(ex_uint,
+            DBusAdaptor::UInt32ToVariant(ex_uint).reader().get_uint32());
+
+  int32 ex_int = 0;
+  EXPECT_EQ(ex_int,
+            DBusAdaptor::IntToVariant(ex_int).reader().get_int32());
+  ex_int = 128;
+  EXPECT_EQ(ex_int,
+            DBusAdaptor::IntToVariant(ex_int).reader().get_int32());
+
+  std::string ex_string = "";
+  EXPECT_EQ(ex_string,
+            DBusAdaptor::StringToVariant(ex_string).reader().get_string());
+  ex_string = "hello";
+  EXPECT_EQ(ex_string,
+            DBusAdaptor::StringToVariant(ex_string).reader().get_string());
+}
+
+}  // namespace shill