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// Copyright 2019 The Abseil Authors.
//
// 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
//
// https://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.
#ifdef _WIN32
#include <windows.h>
#endif
#include "gtest/gtest.h"
#include "absl/base/internal/scoped_set_env.h"
namespace {
using absl::base_internal::ScopedSetEnv;
std::string GetEnvVar(const char* name) {
#ifdef _WIN32
char buf[1024];
auto get_res = GetEnvironmentVariableA(name, buf, sizeof(buf));
if (get_res >= sizeof(buf)) {
return "TOO_BIG";
}
if (get_res == 0) {
return "UNSET";
}
return std::string(buf, get_res);
#else
const char* val = ::getenv(name);
if (val == nullptr) {
return "UNSET";
}
return val;
#endif
}
TEST(ScopedSetEnvTest, SetNonExistingVarToString) {
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "UNSET");
{
ScopedSetEnv scoped_set("SCOPED_SET_ENV_TEST_VAR", "value");
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "value");
}
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "UNSET");
}
TEST(ScopedSetEnvTest, SetNonExistingVarToNull) {
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "UNSET");
{
ScopedSetEnv scoped_set("SCOPED_SET_ENV_TEST_VAR", nullptr);
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "UNSET");
}
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "UNSET");
}
TEST(ScopedSetEnvTest, SetExistingVarToString) {
ScopedSetEnv scoped_set("SCOPED_SET_ENV_TEST_VAR", "value");
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "value");
{
ScopedSetEnv scoped_set("SCOPED_SET_ENV_TEST_VAR", "new_value");
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "new_value");
}
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "value");
}
TEST(ScopedSetEnvTest, SetExistingVarToNull) {
ScopedSetEnv scoped_set("SCOPED_SET_ENV_TEST_VAR", "value");
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "value");
{
ScopedSetEnv scoped_set("SCOPED_SET_ENV_TEST_VAR", nullptr);
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "UNSET");
}
EXPECT_EQ(GetEnvVar("SCOPED_SET_ENV_TEST_VAR"), "value");
}
} // namespace
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