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diff --git a/tests/test-timezone-timedated.cpp b/tests/test-timezone-timedated.cpp
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+
+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * Authors:
+ *   Charles Kerr <charles.kerr@canonical.com>
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "timedated-fixture.h"
+
+#include <datetime/timezone-timedated.h>
+
+#include <cstdio> // fopen()
+//#include <sys/stat.h> // chmod()
+#include <unistd.h> // sync()
+
+using unity::indicator::datetime::TimedatedTimezone;
+
+/**
+ * Test that timezone-file picks up the initial value
+ */
+TEST_F(TimedateFixture, InitialValue)
+{
+  const std::string expected_timezone = "America/Chicago";
+  set_timezone(expected_timezone);
+  TimedatedTimezone tz;
+  ASSERT_EQ(expected_timezone, tz.timezone.get());
+}
+
+/**
+ * Test that changing the tz after we are running works.
+ */
+TEST_F(TimedateFixture, ChangedValue)
+{
+  const std::string initial_timezone = "America/Chicago";
+  const std::string changed_timezone = "America/New_York";
+  GMainLoop *l = g_main_loop_new(nullptr, FALSE);
+
+  set_timezone(initial_timezone);
+
+  TimedatedTimezone tz;
+  ASSERT_EQ(initial_timezone, tz.timezone.get());
+
+  bool changed = false;
+  tz.timezone.changed().connect(
+        [&changed, this, l](const std::string& s){
+          g_message("timezone changed to %s", s.c_str());
+          changed = true;
+          g_main_loop_quit(l);
+        });
+
+  g_idle_add([](gpointer gself){
+    static_cast<TimedateFixture*>(gself)->set_timezone("America/New_York");
+    return G_SOURCE_REMOVE;
+  }, this);
+
+  g_main_loop_run(l);
+
+  ASSERT_TRUE(changed);
+  ASSERT_EQ(changed_timezone, tz.timezone.get());
+}