Implemented simple unit tests

Makefile.am

@@ -40,12 +40,26 @@ libinclude_HEADERS = \
 
 ## Build test applications
 noinst_PROGRAMS = \
-	test/iso
+	test/iso 
 
 test_iso_CPPFLAGS = -Ilibisofs
 test_iso_LDADD = $(libisofs_libisofs_la_OBJECTS) $(THREAD_LIBS)
 test_iso_SOURCES = test/iso.c
 
+## Build unit test
+
+check_PROGRAMS = \
+	test/test
+	
+test_test_CPPFLAGS = -Ilibisofs
+test_test_LDADD = $(libisofs_libisofs_la_OBJECTS) $(THREAD_LIBS)
+	
+test_test_SOURCES = \
+	test/test_exclude.c \
+	test/test_tree.c \
+	test/test_file_hashtable.c \
+	test/test.c
+
 
 ## ========================================================================= ##