[PATCH RFC 4/7] selftests/nolibc: count subtests

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This will be needed for KTAP output.

Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
---
 tools/testing/selftests/nolibc/nolibc-test.c | 30 +++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 76bd6a0a8132..03f64ce1dda6 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -65,6 +65,13 @@ struct test {
 	int (*func)(unsigned int min, unsigned int max); /* handler */
 };
 
+#define COUNT_SUBTESTS (-1)
+
+static unsigned int count_subtests(const struct test *test)
+{
+	return test->func(COUNT_SUBTESTS, COUNT_SUBTESTS);
+}
+
 #ifndef _NOLIBC_STDLIB_H
 char *itoa(int i)
 {
@@ -571,10 +578,10 @@ static int expect_strne(const char *expr, int llen, const char *cmp)
 	case __LINE__: llen += printf("%d %s", test, #name);
 
 #define SWITCH_TEST \
-	switch (test + __LINE__ + 1) {
+	int _tests_start = __LINE__; switch (test + __LINE__ + 1) {
 
 #define SWITCH_TEST_END \
-	case __LINE__: return ret; }
+	case __LINE__: return ret; default: return __LINE__ - _tests_start - 1; }
 
 
 int run_startup(unsigned int min, unsigned int max)
@@ -592,7 +599,7 @@ int run_startup(unsigned int min, unsigned int max)
 	test_auxv = _auxv;
 #endif
 
-	for (test = min; test >= 0 && test <= max; test++) {
+	for (test = min; test == COUNT_SUBTESTS || (test >= 0 && test <= max); test++) {
 		int llen = 0; /* line length */
 
 		/* avoid leaving empty lines below, this will insert holes into
@@ -801,7 +808,7 @@ int run_syscall(unsigned int min, unsigned int max)
 	has_gettid = __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30);
 #endif
 
-	for (test = min; test >= 0 && test <= max; test++) {
+	for (test = min; test == COUNT_SUBTESTS || (test >= 0 && test <= max); test++) {
 		int llen = 0; /* line length */
 
 		/* avoid leaving empty lines below, this will insert holes into
@@ -892,7 +899,7 @@ int run_stdlib(unsigned int min, unsigned int max)
 	int ret = 0;
 	void *p1, *p2;
 
-	for (test = min; test >= 0 && test <= max; test++) {
+	for (test = min; test == COUNT_SUBTESTS || (test >= 0 && test <= max); test++) {
 		int llen = 0; /* line length */
 
 		/* avoid leaving empty lines below, this will insert holes into
@@ -1032,7 +1039,7 @@ static int run_vfprintf(unsigned int min, unsigned int max)
 	int ret = 0;
 	void *p1, *p2;
 
-	for (test = min; test >= 0 && test <= max; test++) {
+	for (test = min; test == COUNT_SUBTESTS || (test >= 0 && test <= max); test++) {
 		int llen = 0; /* line length */
 
 		/* avoid leaving empty lines below, this will insert holes into
@@ -1070,6 +1077,9 @@ static int run_protection(unsigned int min, unsigned int max)
 	pid_t pid;
 	int llen = 0, status;
 
+	if (min == COUNT_SUBTESTS)
+		return 1;
+
 	llen += printf("0 -fstackprotector ");
 
 #if !defined(_NOLIBC_STACKPROTECTOR)
@@ -1219,6 +1229,7 @@ int main(int argc, char **argv, char **envp)
 	int ret = 0;
 	int err;
 	int idx;
+	unsigned int subtests;
 	char *test;
 
 	argv0 = argv[0];
@@ -1265,6 +1276,8 @@ int main(int argc, char **argv, char **envp)
 				 * once. We may have an optional range at <colon>
 				 * here, which defaults to the full range.
 				 */
+
+				subtests = count_subtests(&test_names[idx]);
 				do {
 					min = 0; max = INT_MAX;
 					value = colon;
@@ -1285,11 +1298,14 @@ int main(int argc, char **argv, char **envp)
 						else if (*dash)
 							max = atoi(dash);
 
+						if (max > subtests)
+							max = subtests;
+
 						value = colon;
 					}
 
 					/* now's time to call the test */
-					printf("Running test '%s'\n", test_names[idx].name);
+					printf("Running test '%s' (%d-%d of %d)\n", test_names[idx].name, min, max, subtests);
 					err = test_names[idx].func(min, max);
 					ret += err;
 					printf("Errors during this test: %d\n\n", err);

-- 
2.41.0




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