1 files changed, 197 insertions, 0 deletions
diff --git a/tests/util/regexp.c b/tests/util/regexp.c
new file mode 100644
index 000000000..a76955d59
--- /dev/null
+++ b/tests/util/regexp.c
@@ -0,0 +1,197 @@
+#include "clar_libgit2.h"
+
+#include <locale.h>
+
+#include "regexp.h"
+
+#if LC_ALL > 0
+static const char *old_locales[LC_ALL];
+#endif
+
+static git_regexp regex;
+
+void test_regexp__initialize(void)
+{
+#if LC_ALL > 0
+	memset(&old_locales, 0, sizeof(old_locales));
+#endif
+}
+
+void test_regexp__cleanup(void)
+{
+	git_regexp_dispose(&regex);
+}
+
+static void try_set_locale(int category)
+{
+#if LC_ALL > 0
+	old_locales[category] = setlocale(category, NULL);
+#endif
+
+	if (!setlocale(category, "UTF-8") &&
+	    !setlocale(category, "c.utf8") &&
+	    !setlocale(category, "en_US.UTF-8"))
+		cl_skip();
+
+	if (MB_CUR_MAX == 1)
+		cl_fail("Expected locale to be switched to multibyte");
+}
+
+
+void test_regexp__compile_ignores_global_locale_ctype(void)
+{
+	try_set_locale(LC_CTYPE);
+	cl_git_pass(git_regexp_compile(&regex, "[\xc0-\xff][\x80-\xbf]", 0));
+}
+
+void test_regexp__compile_ignores_global_locale_collate(void)
+{
+#ifdef GIT_WIN32
+	cl_skip();
+#endif
+
+	try_set_locale(LC_COLLATE);
+	cl_git_pass(git_regexp_compile(&regex, "[\xc0-\xff][\x80-\xbf]", 0));
+}
+
+void test_regexp__regex_matches_digits_with_locale(void)
+{
+	char c, str[2];
+
+#ifdef GIT_WIN32
+	cl_skip();
+#endif
+
+	try_set_locale(LC_COLLATE);
+	try_set_locale(LC_CTYPE);
+
+	cl_git_pass(git_regexp_compile(&regex, "[[:digit:]]", 0));
+
+	str[1] = '\0';
+	for (c = '0'; c <= '9'; c++) {
+	    str[0] = c;
+	    cl_git_pass(git_regexp_match(&regex, str));
+	}
+}
+
+void test_regexp__regex_matches_alphabet_with_locale(void)
+{
+	char c, str[2];
+
+#ifdef GIT_WIN32
+	cl_skip();
+#endif
+
+	try_set_locale(LC_COLLATE);
+	try_set_locale(LC_CTYPE);
+
+	cl_git_pass(git_regexp_compile(&regex, "[[:alpha:]]", 0));
+
+	str[1] = '\0';
+	for (c = 'a'; c <= 'z'; c++) {
+	    str[0] = c;
+	    cl_git_pass(git_regexp_match(&regex, str));
+	}
+	for (c = 'A'; c <= 'Z'; c++) {
+	    str[0] = c;
+	    cl_git_pass(git_regexp_match(&regex, str));
+	}
+}
+
+void test_regexp__simple_search_matches(void)
+{
+	cl_git_pass(git_regexp_compile(&regex, "a", 0));
+	cl_git_pass(git_regexp_search(&regex, "a", 0, NULL));
+}
+
+void test_regexp__case_insensitive_search_matches(void)
+{
+	cl_git_pass(git_regexp_compile(&regex, "a", GIT_REGEXP_ICASE));
+	cl_git_pass(git_regexp_search(&regex, "A", 0, NULL));
+}
+
+void test_regexp__nonmatching_search_returns_error(void)
+{
+	cl_git_pass(git_regexp_compile(&regex, "a", 0));
+	cl_git_fail(git_regexp_search(&regex, "b", 0, NULL));
+}
+
+void test_regexp__search_finds_complete_match(void)
+{
+	git_regmatch matches[1];
+
+	cl_git_pass(git_regexp_compile(&regex, "abc", 0));
+	cl_git_pass(git_regexp_search(&regex, "abc", 1, matches));
+	cl_assert_equal_i(matches[0].start, 0);
+	cl_assert_equal_i(matches[0].end, 3);
+}
+
+void test_regexp__search_finds_correct_offsets(void)
+{
+	git_regmatch matches[3];
+
+	cl_git_pass(git_regexp_compile(&regex, "(a*)(b*)", 0));
+	cl_git_pass(git_regexp_search(&regex, "ab", 3, matches));
+	cl_assert_equal_i(matches[0].start, 0);
+	cl_assert_equal_i(matches[0].end, 2);
+	cl_assert_equal_i(matches[1].start, 0);
+	cl_assert_equal_i(matches[1].end, 1);
+	cl_assert_equal_i(matches[2].start, 1);
+	cl_assert_equal_i(matches[2].end, 2);
+}
+
+void test_regexp__search_finds_empty_group(void)
+{
+	git_regmatch matches[3];
+
+	cl_git_pass(git_regexp_compile(&regex, "(a*)(b*)c", 0));
+	cl_git_pass(git_regexp_search(&regex, "ac", 3, matches));
+	cl_assert_equal_i(matches[0].start, 0);
+	cl_assert_equal_i(matches[0].end, 2);
+	cl_assert_equal_i(matches[1].start, 0);
+	cl_assert_equal_i(matches[1].end, 1);
+	cl_assert_equal_i(matches[2].start, 1);
+	cl_assert_equal_i(matches[2].end, 1);
+}
+
+void test_regexp__search_fills_matches_with_first_matching_groups(void)
+{
+	git_regmatch matches[2];
+
+	cl_git_pass(git_regexp_compile(&regex, "(a)(b)(c)", 0));
+	cl_git_pass(git_regexp_search(&regex, "abc", 2, matches));
+	cl_assert_equal_i(matches[0].start, 0);
+	cl_assert_equal_i(matches[0].end, 3);
+	cl_assert_equal_i(matches[1].start, 0);
+	cl_assert_equal_i(matches[1].end, 1);
+}
+
+void test_regexp__search_skips_nonmatching_group(void)
+{
+	git_regmatch matches[4];
+
+	cl_git_pass(git_regexp_compile(&regex, "(a)(b)?(c)", 0));
+	cl_git_pass(git_regexp_search(&regex, "ac", 4, matches));
+	cl_assert_equal_i(matches[0].start, 0);
+	cl_assert_equal_i(matches[0].end, 2);
+	cl_assert_equal_i(matches[1].start, 0);
+	cl_assert_equal_i(matches[1].end, 1);
+	cl_assert_equal_i(matches[2].start, -1);
+	cl_assert_equal_i(matches[2].end, -1);
+	cl_assert_equal_i(matches[3].start, 1);
+	cl_assert_equal_i(matches[3].end, 2);
+}
+
+void test_regexp__search_initializes_trailing_nonmatching_groups(void)
+{
+	git_regmatch matches[3];
+
+	cl_git_pass(git_regexp_compile(&regex, "(a)bc", 0));
+	cl_git_pass(git_regexp_search(&regex, "abc", 3, matches));
+	cl_assert_equal_i(matches[0].start, 0);
+	cl_assert_equal_i(matches[0].end, 3);
+	cl_assert_equal_i(matches[1].start, 0);
+	cl_assert_equal_i(matches[1].end, 1);
+	cl_assert_equal_i(matches[2].start, -1);
+	cl_assert_equal_i(matches[2].end, -1);
+}