[PATCH v1 2/4] unit-test: cover run_commandf() by test-cases

[Evgeny Bachinin]

As run_commandf() is variadic version of run_command() and just a wrapper,
hence apply similar run_command's test-cases.

Let's avoid warning about empty string passing:
warning: zero-length gnu_printf format string [-Wformat-zero-length]
   assert(run_commandf("") == 0);

Signed-off-by: Evgeny Bachinin <EABachinin at sberdevices.ru>
---
 test/command_ut.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/test/command_ut.c b/test/command_ut.c
index 9837d10eb5..c488bb5330 100644
--- a/test/command_ut.c
+++ b/test/command_ut.c
@@ -9,11 +9,16 @@
 #include <command.h>
 #include <env.h>
 #include <log.h>
+#include <linux/errno.h>
 
 static const char test_cmd[] = "setenv list 1\n setenv list ${list}2; "
 		"setenv list ${list}3\0"
 		"setenv list ${list}4";
 
+static const char long_str[] = "This is very long string, exceeding internal "
+		"limit of run_commandf(). It's expected, the function "
+		"detects truncation case.";
+
 static int do_ut_cmd(struct cmd_tbl *cmdtp, int flag, int argc,
 		     char *const argv[])
 {
@@ -60,6 +65,36 @@ static int do_ut_cmd(struct cmd_tbl *cmdtp, int flag, int argc,
 
 	assert(run_command("'", 0) == 1);
 
+	/* Variadic function test-cases */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-zero-length"
+	assert(run_commandf("") == 0);
+#pragma GCC diagnostic pop
+	assert(run_commandf(" ") == 0);
+	assert(run_commandf("'") == 1);
+
+	assert(run_commandf("env %s %s", "delete -f", "list") == 0);
+	/* Expected: "Error: "list" not defined" */
+	assert(run_commandf("printenv list") == 1);
+
+	assert(run_commandf("Truncation case: %s, %s",
+			    long_str, long_str) == -EINVAL);
+
+	if (IS_ENABLED(CONFIG_HUSH_PARSER)) {
+		assert(run_commandf("env %s %s %s %s", "delete -f", "adder",
+				    "black", "foo") == 0);
+		assert(run_commandf("setenv foo 'setenv %s 1\nsetenv %s 2'",
+				    "black", "adder") == 0);
+		run_command("run foo", 0);
+		assert(env_get("black"));
+		assert(!strcmp("1", env_get("black")));
+		assert(env_get("adder"));
+		assert(!strcmp("2", env_get("adder")));
+	}
+
+	/* Clean up before exit */
+	run_command("env default -f -a", 0);
+
 	printf("%s: Everything went swimmingly\n", __func__);
 	return 0;
 }
-- 
2.17.1