test_main: Add option to list tests

The test runner already lists available tests if it fails to parse the
command line, but add a -l option to explicitly do this without also
printing an error message and a summary of options.

diff --git a/test_utils/test_main.c b/test_utils/test_main.c
index f31678166ad043964a65747b2f77ea71d9b5c2d4..dbd3fcf60e9a5b00131f771112cda8f5c78ee876 100644 (file)
--- a/test_utils/test_main.c
+++ b/test_utils/test_main.c
@@ -3681,11 +3681,19 @@ test_run(int i, const char *tmpdir)
  */
 
 static void
-usage(const char *program)
+list_tests(void)
 {
        static const int limit = nitems(tests);
        int i;
 
+       for (i = 0; i < limit; i++)
+               printf("  %d: %s\n", i, tests[i].name);
+}
+
+static void
+usage(const char *program)
+{
+
        printf("Usage: %s [options] <test> <test> ...\n", program);
        printf("Default is to run all tests.\n");
        printf("Otherwise, specify the numbers of the tests you wish to run.\n");
@@ -3693,6 +3701,8 @@ usage(const char *program)
        printf("  -d  Dump core after any failure, for debugging.\n");
        printf("  -k  Keep all temp files.\n");
        printf("      Default: temp files for successful tests deleted.\n");
+       printf("  -l  List available tests and exit, ignoring all other.\n");
+       printf("      options and arguments.\n");
 #ifdef PROGRAM
        printf("  -p <path>  Path to executable to be tested.\n");
        printf("      Default: path taken from " ENVBASE " environment variable.\n");
@@ -3704,8 +3714,7 @@ usage(const char *program)
        printf("  -u  Keep running specified tests until one fails.\n");
        printf("  -v  Verbose.\n");
        printf("Available tests:\n");
-       for (i = 0; i < limit; i++)
-               printf("  %d: %s\n", i, tests[i].name);
+       list_tests();
        exit(1);
 }
 
@@ -4079,6 +4088,10 @@ main(int argc, char **argv)
                        case 'k':
                                keep_temp_files = 1;
                                break;
+                       case 'l':
+                               list_tests();
+                               exit(0);
+                               break;
                        case 'p':
 #ifdef PROGRAM
                                testprogfile = option_arg;