test: add unit test for util/byte_reverse.c

Makefile.am

@@ -975,6 +975,7 @@ sparse-check:
 if ENABLE_TEST
 
 C_TESTS = \
+	test/test_byte_reverse \
 	test/test_pcm \
 	test/test_queue_priority
 
@@ -1262,6 +1263,13 @@ test_run_inotify_SOURCES = test/run_inotify.c \
 test_run_inotify_LDADD = $(GLIB_LIBS)
 endif
 
+test_test_byte_reverse_SOURCES = \
+	test/test_glib_compat.h \
+	test/test_byte_reverse.c
+test_test_byte_reverse_LDADD = \
+	libutil.a \
+	$(GLIB_LIBS)
+
 test_test_pcm_SOURCES = \
 	test/test_glib_compat.h \
 	test/test_pcm_dither.c \

test/test_byte_reverse.c

+/*
+ * Copyright (C) 2003-2012 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "util/byte_reverse.h"
+#include "test_glib_compat.h"
+
+#include <glib.h>
+
+static void
+test_byte_reverse_2(void)
+{
+	static const char src[] = "123456";
+	static const char result[] = "214365";
+	static uint8_t dest[G_N_ELEMENTS(src)];
+
+	reverse_bytes(dest, (const uint8_t *)src,
+		      (const uint8_t *)(src + G_N_ELEMENTS(src) - 1), 2);
+	g_assert_cmpstr((const char *)dest, ==, result);
+}
+
+static void
+test_byte_reverse_3(void)
+{
+	static const char src[] = "123456";
+	static const char result[] = "321654";
+	static uint8_t dest[G_N_ELEMENTS(src)];
+
+	reverse_bytes(dest, (const uint8_t *)src,
+		      (const uint8_t *)(src + G_N_ELEMENTS(src) - 1), 3);
+	g_assert_cmpstr((const char *)dest, ==, result);
+}
+
+static void
+test_byte_reverse_4(void)
+{
+	static const char src[] = "12345678";
+	static const char result[] = "43218765";
+	static uint8_t dest[G_N_ELEMENTS(src)];
+
+	reverse_bytes(dest, (const uint8_t *)src,
+		      (const uint8_t *)(src + G_N_ELEMENTS(src) - 1), 4);
+	g_assert_cmpstr((const char *)dest, ==, result);
+}
+
+static void
+test_byte_reverse_5(void)
+{
+	static const char src[] = "1234567890";
+	static const char result[] = "5432109876";
+	static uint8_t dest[G_N_ELEMENTS(src)];
+
+	reverse_bytes(dest, (const uint8_t *)src,
+		      (const uint8_t *)(src + G_N_ELEMENTS(src) - 1), 5);
+	g_assert_cmpstr((const char *)dest, ==, result);
+}
+
+int
+main(int argc, char **argv)
+{
+	g_test_init (&argc, &argv, NULL);
+	g_test_add_func("/util/byte_reverse/2", test_byte_reverse_2);
+	g_test_add_func("/util/byte_reverse/3", test_byte_reverse_3);
+	g_test_add_func("/util/byte_reverse/4", test_byte_reverse_4);
+	g_test_add_func("/util/byte_reverse/5", test_byte_reverse_5);
+
+	g_test_run();
+}

test/test_glib_compat.h

@@ -28,7 +28,10 @@
 
 #if !GLIB_CHECK_VERSION(2,16,0)
 
+#include <string.h>
+
 #define g_assert_cmpint(n1, cmp, n2) g_assert((n1) cmp (n2))
+#define g_assert_cmpstr(a, cmp, b) g_assert(strcmp(a, b) cmp 0)
 
 static void (*test_functions[256])(void);
 static unsigned num_test_functions;