rcutils/test/test_env.cpp at jazzy · micro-ROS2/rcutils · GitHub

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// 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 <gtest/gtest.h>

#include <string>

#include "rcutils/env.h"

#include "rcutils/error_handling.h"

TEST(TestEnv, test_set_env) {

const char * res = nullptr;

// Invalid cases

EXPECT_FALSE(rcutils_set_env(nullptr, nullptr));

rcutils_reset_error();

EXPECT_FALSE(rcutils_set_env("=INVALID_ENV_VAR=", nullptr));

rcutils_reset_error();

EXPECT_FALSE(rcutils_set_env("=INVALID_ENV_VAR=", "InvalidEnvValue"));

rcutils_reset_error();

// Ensure we're starting clean

ASSERT_EQ(nullptr, rcutils_get_env("NEW_ENV_VAR", &res));

ASSERT_STREQ("", res);

// Simple set

ASSERT_TRUE(rcutils_set_env("NEW_ENV_VAR", "NewEnvValue"));

ASSERT_STREQ(nullptr, rcutils_get_env("NEW_ENV_VAR", &res));

EXPECT_STREQ(res, "NewEnvValue");

// Re-set

ASSERT_TRUE(rcutils_set_env("NEW_ENV_VAR", "DifferentEnvValue"));

ASSERT_STREQ(nullptr, rcutils_get_env("NEW_ENV_VAR", &res));

EXPECT_STREQ(res, "DifferentEnvValue");

// Un-set

ASSERT_TRUE(rcutils_set_env("NEW_ENV_VAR", nullptr));

ASSERT_EQ(nullptr, rcutils_get_env("NEW_ENV_VAR", &res));

EXPECT_STREQ("", res);

// Un-set again

ASSERT_TRUE(rcutils_set_env("NEW_ENV_VAR", nullptr));

ASSERT_EQ(nullptr, rcutils_get_env("NEW_ENV_VAR", &res));

EXPECT_STREQ("", res);

}

/* Tests rcutils_get_env.

* 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(TestEnv, test_get_env) {

const char * env;

const char * ret;

ret = rcutils_get_env("NORMAL_TEST", NULL);

EXPECT_STREQ("argument env_value is null", ret);

ret = rcutils_get_env(NULL, &env);

EXPECT_STREQ("argument env_name is null", ret);

ret = rcutils_get_env("SHOULD_NOT_EXIST_TEST", &env);

EXPECT_FALSE(ret);

EXPECT_STREQ("", env);

ret = rcutils_get_env("NORMAL_TEST", &env);

EXPECT_FALSE(ret);

EXPECT_FALSE(NULL == env);

EXPECT_STREQ("foo", env);

ret = rcutils_get_env("EMPTY_TEST", &env);

EXPECT_FALSE(ret);

EXPECT_FALSE(NULL == env);

EXPECT_STREQ("", env);

}

/* Tests rcutils_get_env.

* 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(TestEnv, test_set_env_overwrite) {

const char * env;

const char * ret;

// Do not overwrite environment variable if preset if overwrite is set false.

EXPECT_TRUE(rcutils_set_env_overwrite("NORMAL_TEST", "NewEnvValue", false));

ret = rcutils_get_env("NORMAL_TEST", &env);

EXPECT_TRUE(NULL == ret);

EXPECT_STREQ("foo", env);

// Overwrite environment variable if present if overwrite is set true.

EXPECT_TRUE(rcutils_set_env_overwrite("NORMAL_TEST", "NewEnvValue", true));

ret = rcutils_get_env("NORMAL_TEST", &env);

EXPECT_TRUE(NULL == ret);

EXPECT_STREQ("NewEnvValue", env);

}

TEST(TestEnv, test_get_home) {

EXPECT_STRNE(NULL, rcutils_get_home_dir());

const char * home = NULL;

#ifdef _WIN32

// Assert pre-condition that USERPROFILE is defined

const char * ret = rcutils_get_env("USERPROFILE", &home);

ASSERT_EQ(NULL, ret);

// Check USERPROFILE is not defined

EXPECT_TRUE(rcutils_set_env("USERPROFILE", NULL));

EXPECT_EQ(NULL, rcutils_get_home_dir());

#else

// Assert pre-condition that HOME is defined

const char * ret = rcutils_get_env("HOME", &home);

ASSERT_EQ(NULL, ret);

// Check HOME is not defined

EXPECT_TRUE(rcutils_set_env("HOME", NULL));

EXPECT_EQ(NULL, rcutils_get_home_dir());

#endif

}

rcutils/test/test_env.cpp at jazzy · micro-ROS2/rcutils · GitHub

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