From 4e26569d9870e61c95c6ce79c6d556358b9da433 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Wed, 17 Oct 2018 05:25:07 -0400 Subject: test-tool: show tool list on error Before we switched to one big test-tool binary, if you forgot the name of a tool, you could use tab-completion in the shell to get a hint. But these days, all you get is: $ t/helper/test-tool approxidate fatal: There is no test named 'approxidate' and you're stuck reading the source code to find it. Let's print a list of the available tools in this case. Signed-off-by: Jeff King Reviewed-by: Derrick Stolee Signed-off-by: Junio C Hamano --- t/helper/test-tool.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/t/helper/test-tool.c b/t/helper/test-tool.c index 6b5836dc1b..5df8b682aa 100644 --- a/t/helper/test-tool.c +++ b/t/helper/test-tool.c @@ -55,13 +55,23 @@ static struct test_cmd cmds[] = { { "write-cache", cmd__write_cache }, }; +static NORETURN void die_usage(void) +{ + size_t i; + + fprintf(stderr, "usage: test-tool [args]\n"); + for (i = 0; i < ARRAY_SIZE(cmds); i++) + fprintf(stderr, " %s\n", cmds[i].name); + exit(128); +} + int cmd_main(int argc, const char **argv) { int i; BUG_exit_code = 99; if (argc < 2) - die("I need a test name!"); + die_usage(); for (i = 0; i < ARRAY_SIZE(cmds); i++) { if (!strcmp(cmds[i].name, argv[1])) { @@ -70,5 +80,6 @@ int cmd_main(int argc, const char **argv) return cmds[i].fn(argc, argv); } } - die("There is no test named '%s'", argv[1]); + error("there is no tool named '%s'", argv[1]); + die_usage(); } -- cgit v1.2.3