tests: Add shell tests

This adds the following tests:

help tests:
shell_exec(help): 0
shell_exec(help dummy): 0
shell_exec(help invalid): -22

select tests:
shell_exec(select): 0
shell_exec(select dummy): 0
shell_exec(select invalid): -22

module tests:
shell_exec(dummy cmd1): 0
shell_exec(dummy cmd1 arg1): -22
shell_exec(dummy cmd2 arg1): 0
shell_exec(dummy cmd2 arg1 arg2): -22
shell_exec(dummy cmd3 arg1 arg2): 0
shell_exec(dummy cmd3 arg1 arg2 arg3): -22
shell_exec(dummy cmd4 arg1 arg2 arg3): -22
shell_exec(cmd1): 0
shell_exec(cmd1 arg1): -22
shell_exec(cmd2 arg1): 0
shell_exec(cmd2 arg1 arg2): -22
shell_exec(cmd3 arg1 arg2): 0
shell_exec(cmd3 arg1 arg2 arg3): -22
shell_exec(cmd4 arg1 arg2 arg3): -22

app handler tests:
shell_exec(cmd4 arg1 arg2 arg3): 0

Signed-off-by: Luiz Augusto von Dentz <[email protected]>

tests/shell/Makefile

@@ -0,0 +1,4 @@
+BOARD ?= qemu_x86
+CONF_FILE = prj.conf
+
+include ${ZEPHYR_BASE}/Makefile.test

tests/shell/prj.conf

@@ -0,0 +1,2 @@
+CONFIG_CONSOLE_SHELL=y
+CONFIG_ZTEST=y

tests/shell/src/Makefile

@@ -0,0 +1,3 @@
+include $(ZEPHYR_BASE)/tests/Makefile.test
+
+obj-y = main.o

tests/shell/src/main.c

@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 2017 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/** @file
+ *  @brief Interactive shell test suite
+ *
+ */
+
+#include <zephyr.h>
+#include <ztest.h>
+
+#include <shell/shell.h>
+
+static void test_shell_exec(const char *line, int result)
+{
+	char cmd[80];
+	int ret;
+
+	strncpy(cmd, line, sizeof(cmd));
+	ret = shell_exec(cmd);
+
+	TC_PRINT("shell_exec(%s): %d\n", line, ret);
+
+	zassert_true(ret == result, line);
+}
+
+static void test_help(void)
+{
+	test_shell_exec("help", 0);
+	test_shell_exec("help dummy", 0);
+	test_shell_exec("help invalid", -EINVAL);
+}
+
+static void test_select(void)
+{
+	test_shell_exec("select", 0);
+	test_shell_exec("select dummy", 0);
+	test_shell_exec("select invalid", -EINVAL);
+}
+
+static void test_exit(void)
+{
+	test_shell_exec("exit", 0);
+}
+
+static void test_module(void)
+{
+	test_shell_exec("dummy cmd1", 0);
+	test_shell_exec("dummy cmd1 arg1", -EINVAL);
+
+	test_shell_exec("dummy cmd2 arg1", 0);
+	test_shell_exec("dummy cmd2 arg1 arg2", -EINVAL);
+
+	test_shell_exec("dummy cmd3 arg1 arg2", 0);
+	test_shell_exec("dummy cmd3 arg1 arg2 arg3", -EINVAL);
+
+	test_shell_exec("dummy cmd4 arg1 arg2 arg3", -EINVAL);
+
+	shell_register_default_module("dummy");
+
+	test_shell_exec("cmd1", 0);
+	test_shell_exec("cmd1 arg1", -EINVAL);
+
+	test_shell_exec("cmd2 arg1", 0);
+	test_shell_exec("cmd2 arg1 arg2", -EINVAL);
+
+	test_shell_exec("cmd3 arg1 arg2", 0);
+	test_shell_exec("cmd3 arg1 arg2 arg3", -EINVAL);
+
+	test_shell_exec("cmd4 arg1 arg2 arg3", -EINVAL);
+}
+
+static int app_cmd_handler(int argc, char *argv[])
+{
+	return 0;
+}
+
+static void test_app_handler(void)
+{
+	shell_register_app_cmd_handler(app_cmd_handler);
+
+	test_shell_exec("cmd4 arg1 arg2 arg3", 0);
+}
+
+static int dummy_cmd(int argc, char *argv[])
+{
+	if (!strcmp(argv[0], "cmd1")) {
+		return argc == 1 ? 0 : -EINVAL;
+	}
+
+	if (!strcmp(argv[0], "cmd2")) {
+		return argc == 2 ? 0 : -EINVAL;
+	}
+
+	if (!strcmp(argv[0], "cmd3")) {
+		return argc == 3 ? 0 : -EINVAL;
+	}
+
+	return -EINVAL;
+}
+
+static const struct shell_cmd dummy_cmds[] = {
+	{ "cmd1", dummy_cmd, "" },
+	{ "cmd2", dummy_cmd, "<arg1>" },
+	{ "cmd3", dummy_cmd, "<arg1> <arg2>" },
+	{ NULL, NULL }
+};
+
+void test_main(void)
+{
+	SHELL_REGISTER("dummy", dummy_cmds);
+
+	ztest_test_suite(shell_test_suite,
+			ztest_unit_test(test_help),
+			ztest_unit_test(test_select),
+			ztest_unit_test(test_exit),
+			ztest_unit_test(test_module),
+			ztest_unit_test(test_app_handler));
+	ztest_run_test_suite(shell_test_suite);
+}

tests/shell/testcase.ini

@@ -0,0 +1,3 @@
+[test]
+tags = shell
+platform_whitelist = qemu_x86