1 files changed, 78 insertions, 0 deletions
diff --git a/tests/util/iconv.c b/tests/util/iconv.c
new file mode 100644
index 000000000..e14aebb99
--- /dev/null
+++ b/tests/util/iconv.c
@@ -0,0 +1,78 @@
+#include "clar_libgit2.h"
+#include "fs_path.h"
+
+#ifdef GIT_USE_ICONV
+static git_fs_path_iconv_t ic;
+static char *nfc = "\xC3\x85\x73\x74\x72\xC3\xB6\x6D";
+static char *nfd = "\x41\xCC\x8A\x73\x74\x72\x6F\xCC\x88\x6D";
+#endif
+
+void test_iconv__initialize(void)
+{
+#ifdef GIT_USE_ICONV
+	cl_git_pass(git_fs_path_iconv_init_precompose(&ic));
+#endif
+}
+
+void test_iconv__cleanup(void)
+{
+#ifdef GIT_USE_ICONV
+	git_fs_path_iconv_clear(&ic);
+#endif
+}
+
+void test_iconv__unchanged(void)
+{
+#ifdef GIT_USE_ICONV
+	const char *data = "Ascii data", *original = data;
+	size_t datalen = strlen(data);
+
+	cl_git_pass(git_fs_path_iconv(&ic, &data, &datalen));
+	GIT_UNUSED(datalen);
+
+	/* There are no high bits set, so this should leave data untouched */
+	cl_assert(data == original);
+#endif
+}
+
+void test_iconv__decomposed_to_precomposed(void)
+{
+#ifdef GIT_USE_ICONV
+	const char *data = nfd;
+	size_t datalen, nfdlen = strlen(nfd);
+
+	datalen = nfdlen;
+	cl_git_pass(git_fs_path_iconv(&ic, &data, &datalen));
+	GIT_UNUSED(datalen);
+
+	/* The decomposed nfd string should be transformed to the nfc form
+	 * (on platforms where iconv is enabled, of course).
+	 */
+	cl_assert_equal_s(nfc, data);
+
+	/* should be able to do it multiple times with the same git_fs_path_iconv_t */
+	data = nfd; datalen = nfdlen;
+	cl_git_pass(git_fs_path_iconv(&ic, &data, &datalen));
+	cl_assert_equal_s(nfc, data);
+
+	data = nfd; datalen = nfdlen;
+	cl_git_pass(git_fs_path_iconv(&ic, &data, &datalen));
+	cl_assert_equal_s(nfc, data);
+#endif
+}
+
+void test_iconv__precomposed_is_unmodified(void)
+{
+#ifdef GIT_USE_ICONV
+	const char *data = nfc;
+	size_t datalen = strlen(nfc);
+
+	cl_git_pass(git_fs_path_iconv(&ic, &data, &datalen));
+	GIT_UNUSED(datalen);
+
+	/* data is already in precomposed form, so even though some bytes have
+	 * the high-bit set, the iconv transform should result in no change.
+	 */
+	cl_assert_equal_s(nfc, data);
+#endif
+}