test/command_ut.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 2012, The Chromium Authors
 */

#define DEBUG

#include <command.h>
#include <env.h>
#include <log.h>
#include <string.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 int do_ut_cmd(struct cmd_tbl *cmdtp, int flag, int argc,
		     char *const argv[])
{
	char long_str[CONFIG_SYS_CBSIZE + 42];

	printf("%s: Testing commands\n", __func__);
	run_command("env default -f -a", 0);

	/* commands separated by \n */
	run_command_list("setenv list 1\n setenv list ${list}1", -1, 0);
	assert(!strcmp("11", env_get("list")));

	/* command followed by \n and nothing else */
	run_command_list("setenv list 1${list}\n", -1, 0);
	assert(!strcmp("111", env_get("list")));

	/* a command string with \0 in it. Stuff after \0 should be ignored */
	run_command("setenv list", 0);
	run_command_list(test_cmd, sizeof(test_cmd), 0);
	assert(!strcmp("123", env_get("list")));

	/*
	 * a command list where we limit execution to only the first command
	 * using the length parameter.
	 */
	run_command_list("setenv list 1\n setenv list ${list}2; "
		"setenv list ${list}3", strlen("setenv list 1"), 0);
	assert(!strcmp("1", env_get("list")));

	assert(run_command("false", 0) == 1);
	assert(run_command("echo", 0) == 0);
	assert(run_command_list("false", -1, 0) == 1);
	assert(run_command_list("echo", -1, 0) == 0);

#ifdef CONFIG_HUSH_PARSER
	run_command("setenv foo 'setenv black 1\nsetenv adder 2'", 0);
	run_command("run foo", 0);
	assert(env_get("black") != NULL);
	assert(!strcmp("1", env_get("black")));
	assert(env_get("adder") != NULL);
	assert(!strcmp("2", env_get("adder")));
#endif

	assert(run_command("", 0) == 0);
	assert(run_command(" ", 0) == 0);

	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);

	memset(long_str, 'x', sizeof(long_str));
	assert(run_commandf("Truncation case: %s", long_str) == -ENOSPC);

	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;
}

U_BOOT_CMD(
	ut_cmd,	5,	1,	do_ut_cmd,
	"Very basic test of command parsers",
	""
);