/**************************************************************************/
/*  test_os.cpp                                                           */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
/* "Software"), to deal in the Software without restriction, including    */
/* without limitation the rights to use, copy, modify, merge, publish,    */
/* distribute, sublicense, and/or sell copies of the Software, and to     */
/* permit persons to whom the Software is furnished to do so, subject to  */
/* the following conditions:                                              */
/*                                                                        */
/* The above copyright notice and this permission notice shall be         */
/* included in all copies or substantial portions of the Software.        */
/*                                                                        */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
/**************************************************************************/

#include "tests/test_macros.h"

TEST_FORCE_LINK(test_os)

#include "core/os/os.h"

namespace TestOS {

TEST_CASE("[OS] Environment variables") {
#ifdef WINDOWS_ENABLED
	CHECK_MESSAGE(
			OS::get_singleton()->has_environment("USERPROFILE"),
			"The USERPROFILE environment variable should be present.");
#else
	CHECK_MESSAGE(
			OS::get_singleton()->has_environment("HOME"),
			"The HOME environment variable should be present.");
#endif
}

TEST_CASE("[OS] UTF-8 environment variables") {
	String value = String::utf8("hell\xc3\xb6"); // "hellö", UTF-8 encoded

	OS::get_singleton()->set_environment("HELLO", value);
	String val = OS::get_singleton()->get_environment("HELLO");
	CHECK_MESSAGE(
			val == value,
			"The previously-set HELLO environment variable should return the expected value.");
	CHECK_MESSAGE(
			val.length() == 5,
			"The previously-set HELLO environment variable was decoded as UTF-8 and should have a length of 5.");
	OS::get_singleton()->unset_environment("HELLO");
}

TEST_CASE("[OS] Non-UTF-8 environment variables") {
	String value = String("\xff t\xf6rkylempij\xe4vongahdus"); // hex FF and a Finnish pangram, latin-1
	OS::get_singleton()->set_environment("HELLO", value);
	String val = OS::get_singleton()->get_environment("HELLO");
	CHECK_MESSAGE(
			val == value,
			"The previously-set HELLO environment variable should return the expected value.");
	CHECK_MESSAGE(
			val.length() == 23,
			"The previously-set HELLO environment variable was not decoded from Latin-1.");
	OS::get_singleton()->unset_environment("HELLO");
}

TEST_CASE("[OS] Command line arguments") {
	List<String> arguments = OS::get_singleton()->get_cmdline_args();
	bool found = false;
	for (const String &arg : arguments) {
		if (arg == "--test") {
			found = true;
			break;
		}
	}
	CHECK_MESSAGE(
			found,
			"The `--test` option must be present in the list of command line arguments.");
}

TEST_CASE("[OS] Executable and data paths") {
	CHECK_MESSAGE(
			OS::get_singleton()->get_executable_path().is_absolute_path(),
			"The executable path returned should be an absolute path.");
	CHECK_MESSAGE(
			OS::get_singleton()->get_data_path().is_absolute_path(),
			"The user data path returned should be an absolute path.");
	CHECK_MESSAGE(
			OS::get_singleton()->get_config_path().is_absolute_path(),
			"The user configuration path returned should be an absolute path.");
	CHECK_MESSAGE(
			OS::get_singleton()->get_cache_path().is_absolute_path(),
			"The cache path returned should be an absolute path.");
}

TEST_CASE("[OS] Ticks") {
	CHECK_MESSAGE(
			OS::get_singleton()->get_ticks_usec() > 1000,
			"The returned ticks (in microseconds) must be greater than 1,000.");
	CHECK_MESSAGE(
			OS::get_singleton()->get_ticks_msec() > 1,
			"The returned ticks (in milliseconds) must be greater than 1.");
}

TEST_CASE("[OS] Feature tags") {
#ifdef TOOLS_ENABLED
	CHECK_MESSAGE(
			OS::get_singleton()->has_feature("editor"),
			"The binary has the \"editor\" feature tag.");
	CHECK_MESSAGE(
			!OS::get_singleton()->has_feature("template"),
			"The binary does not have the \"template\" feature tag.");
	CHECK_MESSAGE(
			!OS::get_singleton()->has_feature("template_debug"),
			"The binary does not have the \"template_debug\" feature tag.");
	CHECK_MESSAGE(
			!OS::get_singleton()->has_feature("template_release"),
			"The binary does not have the \"template_release\" feature tag.");
#else
	CHECK_MESSAGE(
			!OS::get_singleton()->has_feature("editor"),
			"The binary does not have the \"editor\" feature tag.");
	CHECK_MESSAGE(
			OS::get_singleton()->has_feature("template"),
			"The binary has the \"template\" feature tag.");
#ifdef DEBUG_ENABLED
	CHECK_MESSAGE(
			OS::get_singleton()->has_feature("template_debug"),
			"The binary has the \"template_debug\" feature tag.");
	CHECK_MESSAGE(
			!OS::get_singleton()->has_feature("template_release"),
			"The binary does not have the \"template_release\" feature tag.");
#else
	CHECK_MESSAGE(
			!OS::get_singleton()->has_feature("template_debug"),
			"The binary does not have the \"template_debug\" feature tag.");
	CHECK_MESSAGE(
			OS::get_singleton()->has_feature("template_release"),
			"The binary has the \"template_release\" feature tag.");
#endif // DEBUG_ENABLED
#endif // TOOLS_ENABLED
}

TEST_CASE("[OS] Process ID") {
	CHECK_MESSAGE(
			OS::get_singleton()->get_process_id() >= 1,
			"The returned process ID should be greater than zero.");
}

TEST_CASE("[OS] Processor count and memory information") {
	CHECK_MESSAGE(
			OS::get_singleton()->get_processor_count() >= 1,
			"The returned processor count should be greater than zero.");
#ifdef DEBUG_ENABLED
	CHECK_MESSAGE(
			OS::get_singleton()->get_static_memory_usage() >= 1,
			"The returned static memory usage should be greater than zero.");
	CHECK_MESSAGE(
			OS::get_singleton()->get_static_memory_peak_usage() >= 1,
			"The returned static memory peak usage should be greater than zero.");
#endif // DEBUG_ENABLED
}

TEST_CASE("[OS] Execute") {
#ifdef WINDOWS_ENABLED
	List<String> arguments;
	arguments.push_back("/C");
	arguments.push_back("dir > NUL");
	int exit_code;
	const Error err = OS::get_singleton()->execute("cmd", arguments, nullptr, &exit_code);
	CHECK_MESSAGE(
			err == OK,
			"(Running the command `cmd /C \"dir > NUL\"` returns the expected Godot error code (OK).");
	CHECK_MESSAGE(
			exit_code == 0,
			"Running the command `cmd /C \"dir > NUL\"` returns a zero (successful) exit code.");
#else
	List<String> arguments;
	arguments.push_back("-c");
	arguments.push_back("ls > /dev/null");
	int exit_code;
	const Error err = OS::get_singleton()->execute("sh", arguments, nullptr, &exit_code);
	CHECK_MESSAGE(
			err == OK,
			"(Running the command `sh -c \"ls > /dev/null\"` returns the expected Godot error code (OK).");
	CHECK_MESSAGE(
			exit_code == 0,
			"Running the command `sh -c \"ls > /dev/null\"` returns a zero (successful) exit code.");
#endif
}

} // namespace TestOS
