u-string-list: move "test_split_in_place" to "u-string-list.c"

We use "test-tool string-list split_in_place" to test the
"string_list_split_in_place" function. As we have introduced the unit
test, we'd better remove the logic from shell script to C program to
improve test speed and readability.

Signed-off-by: shejialuo <shejialuo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: shejialuo

t/helper/test-string-list.c

@@ -18,13 +18,6 @@ static void parse_string_list(struct string_list *list, const char *arg)
 	(void)string_list_split(list, arg, ':', -1);
 }
 
-static void write_list(const struct string_list *list)
-{
-	int i;
-	for (i = 0; i < list->nr; i++)
-		printf("[%d]: \"%s\"\n", i, list->items[i].string);
-}
-
 static void write_list_compact(const struct string_list *list)
 {
 	int i;
@@ -46,21 +39,6 @@ static int prefix_cb(struct string_list_item *item, void *cb_data)
 
 int cmd__string_list(int argc, const char **argv)
 {
-	if (argc == 5 && !strcmp(argv[1], "split_in_place")) {
-		struct string_list list = STRING_LIST_INIT_NODUP;
-		int i;
-		char *s = xstrdup(argv[2]);
-		const char *delim = argv[3];
-		int maxsplit = atoi(argv[4]);
-
-		i = string_list_split_in_place(&list, s, delim, maxsplit);
-		printf("%d\n", i);
-		write_list(&list);
-		string_list_clear(&list, 0);
-		free(s);
-		return 0;
-	}
-
 	if (argc == 4 && !strcmp(argv[1], "filter")) {
 		/*
 		 * Retain only the items that have the specified prefix.

t/t0063-string-list.sh

@@ -7,57 +7,6 @@ test_description='Test string list functionality'
 
 . ./test-lib.sh
 
-test_split_in_place() {
-	cat >expected &&
-	test_expect_success "split (in place) $1 at $2, max $3" "
-		test-tool string-list split_in_place '$1' '$2' '$3' >actual &&
-		test_cmp expected actual
-	"
-}
-
-test_split_in_place "foo:;:bar:;:baz:;:" ":;" "-1" <<EOF
-10
-[0]: "foo"
-[1]: ""
-[2]: ""
-[3]: "bar"
-[4]: ""
-[5]: ""
-[6]: "baz"
-[7]: ""
-[8]: ""
-[9]: ""
-EOF
-
-test_split_in_place "foo:;:bar:;:baz" ":;" "0" <<EOF
-1
-[0]: "foo:;:bar:;:baz"
-EOF
-
-test_split_in_place "foo:;:bar:;:baz" ":;" "1" <<EOF
-2
-[0]: "foo"
-[1]: ";:bar:;:baz"
-EOF
-
-test_split_in_place "foo:;:bar:;:baz" ":;" "2" <<EOF
-3
-[0]: "foo"
-[1]: ""
-[2]: ":bar:;:baz"
-EOF
-
-test_split_in_place "foo:;:bar:;:" ":;" "-1" <<EOF
-7
-[0]: "foo"
-[1]: ""
-[2]: ""
-[3]: "bar"
-[4]: ""
-[5]: ""
-[6]: ""
-EOF
-
 test_expect_success "test filter_string_list" '
 	test "x-" = "x$(test-tool string-list filter - y)" &&
 	test "x-" = "x$(test-tool string-list filter no y)" &&

t/unit-tests/u-string-list.c

@@ -53,3 +53,40 @@ void test_string_list__split(void)
 	t_string_list_split("", ':', -1, "", NULL);
 	t_string_list_split(":", ':', -1, "", "", NULL);
 }
+
+static void t_string_list_split_in_place(const char *data, const char *delim,
+					 int maxsplit, ...)
+{
+	struct string_list expected_strings = STRING_LIST_INIT_DUP;
+	struct string_list list = STRING_LIST_INIT_NODUP;
+	char *string = xstrdup(data);
+	va_list ap;
+	int len;
+
+	va_start(ap, maxsplit);
+	t_vcreate_string_list_dup(&expected_strings, 0, ap);
+	va_end(ap);
+
+	string_list_clear(&list, 0);
+	len = string_list_split_in_place(&list, string, delim, maxsplit);
+	cl_assert_equal_i(len, expected_strings.nr);
+	t_string_list_equal(&list, &expected_strings);
+
+	free(string);
+	string_list_clear(&expected_strings, 0);
+	string_list_clear(&list, 0);
+}
+
+void test_string_list__split_in_place(void)
+{
+	t_string_list_split_in_place("foo:;:bar:;:baz:;:", ":;", -1,
+				     "foo", "", "", "bar", "", "", "baz", "", "", "", NULL);
+	t_string_list_split_in_place("foo:;:bar:;:baz", ":;", 0,
+				     "foo:;:bar:;:baz", NULL);
+	t_string_list_split_in_place("foo:;:bar:;:baz", ":;", 1,
+				     "foo", ";:bar:;:baz", NULL);
+	t_string_list_split_in_place("foo:;:bar:;:baz", ":;", 2,
+				     "foo", "", ":bar:;:baz", NULL);
+	t_string_list_split_in_place("foo:;:bar:;:", ":;", -1,
+				     "foo", "", "", "bar", "", "", "", NULL);
+}