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// Copyright 2020 Open Source Robotics Foundation, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <stdexcept>
#include <string>
#include "gtest/gtest.h"
#include "rcpputils/env.hpp"
/* Tests get_env_var.
*
* Expected environment variables must be set by the calling code:
*
* - EMPTY_TEST=
* - NORMAL_TEST=foo
*
* These are set in the call to `ament_add_gtest()` in the `CMakeLists.txt`.
*/
TEST(TestGetEnv, test_get_env) {
std::string env;
env = rcpputils::get_env_var("NORMAL_TEST");
EXPECT_STREQ("foo", env.c_str());
env = rcpputils::get_env_var("SHOULD_NOT_EXIST_TEST");
EXPECT_STREQ("", env.c_str());
env = rcpputils::get_env_var("EMPTY_TEST");
EXPECT_STREQ("", env.c_str());
}
/* Tests set_env_var. */
TEST(TestSetEnv, test_set_env) {
// Invalid cases: Environment variable name is invalid/NULL.
EXPECT_THROW(
rcpputils::set_env_var(nullptr, nullptr),
std::runtime_error);
EXPECT_THROW(
rcpputils::set_env_var("=INVALID_ENV_VAR=", nullptr),
std::runtime_error);
EXPECT_THROW(
rcpputils::set_env_var("=INVALID_ENV_VAR=", "InvalidEnvValue"),
std::runtime_error);
// Starting empty
EXPECT_STREQ("", rcpputils::get_env_var("NEW_ENV_VAR").c_str());
// Simple set
EXPECT_TRUE(rcpputils::set_env_var("NEW_ENV_VAR", "NewEnvValue"));
EXPECT_STREQ(
"NewEnvValue",
rcpputils::get_env_var("NEW_ENV_VAR").c_str());
// Re-set
EXPECT_TRUE(rcpputils::set_env_var("NEW_ENV_VAR", "DifferentEnvValue"));
EXPECT_STREQ(
"DifferentEnvValue",
rcpputils::get_env_var("NEW_ENV_VAR").c_str());
// Un-set
EXPECT_TRUE(rcpputils::set_env_var("NEW_ENV_VAR", nullptr));
EXPECT_STREQ(
"",
rcpputils::get_env_var("NEW_ENV_VAR").c_str());
// Un-set again
EXPECT_TRUE(rcpputils::set_env_var("NEW_ENV_VAR", nullptr));
EXPECT_STREQ(
"",
rcpputils::get_env_var("NEW_ENV_VAR").c_str());
}
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