add and Update mutex test that is no longer necessary now that glib has been fixed

libs/pbd/test/mutex_test.cc

@@ -0,0 +1,24 @@
+#include "mutex_test.h"
+
+CPPUNIT_TEST_SUITE_REGISTRATION (MutexTest);
+
+using namespace std;
+
+MutexTest::MutexTest ()
+{
+}
+
+void
+MutexTest::testBasic ()
+{
+	Glib::Threads::Mutex::Lock lm (m_mutex);
+
+	CPPUNIT_ASSERT (lm.locked());
+
+	/* This will fail on POSIX systems but not on some older versions of glib
+	 * on win32 as TryEnterCriticalSection is used and it will return true
+	 * as CriticalSection is reentrant and fail the assertion.
+	 */
+	CPPUNIT_ASSERT (!m_mutex.trylock());
+
+}

libs/pbd/test/mutex_test.h

@@ -0,0 +1,17 @@
+#include <cppunit/TestFixture.h>
+#include <cppunit/extensions/HelperMacros.h>
+#include "glibmm/threads.h"
+
+class MutexTest : public CppUnit::TestFixture
+{
+	CPPUNIT_TEST_SUITE (MutexTest);
+	CPPUNIT_TEST (testBasic);
+	CPPUNIT_TEST_SUITE_END ();
+
+public:
+	MutexTest ();
+	void testBasic ();
+
+private:
+	Glib::Threads::Mutex m_mutex;
+};