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authorGravatar Abseil Team <absl-team@google.com>2019-03-08 14:06:50 -0800
committerGravatar Derek Mauro <dmauro@google.com>2019-03-08 17:11:18 -0500
commit88a152ae747c3c42dc9167d46c590929b048d436 (patch)
treee0858f1abd59c78a59b7d8449b7fb7c76904c88c /absl/base/internal/scoped_set_env_test.cc
parentc1cecb25a94c075725e9d2640f6b978a8f61957b (diff)
Export of internal Abseil changes.
-- 5dc8d7504b7c11710b19365a6582c288c8992366 by Derek Mauro <dmauro@google.com>: Fix constexpr Span::last under MSVC and add Span constexpr tests. PiperOrigin-RevId: 237515952 -- 5ea8c146e653bbc49ff7e698699478242df7de35 by Derek Mauro <dmauro@google.com>: Implement Span::first and Span::last from C++20. https://github.com/abseil/abseil-cpp/pull/274 PiperOrigin-RevId: 237494399 -- 08db3417f1d8fe4556255d57a2f0df51b09bdd9a by Derek Mauro <dmauro@google.com>: HTTPS in more URLs. PiperOrigin-RevId: 237486823 -- 83ec63a7f8e47b62af619546f9f7b3bf72e74e86 by Derek Mauro <dmauro@google.com>: Changed HTTP URLs to HTTPS where possible. https://github.com/abseil/abseil-cpp/pull/270 PiperOrigin-RevId: 237445310 -- 220bf279c14cb31efa239500d1a70e0ac0c32e3c by Abseil Team <absl-team@google.com>: Support parsing decltype(nullptr) as a type. PiperOrigin-RevId: 237336739 -- ced234bbe78f5d495c3f6f6a9c2e0a95f7c080a5 by Gennadiy Rozental <rogeeff@google.com>: Introduce internal interface for setting environment variable value in scope PiperOrigin-RevId: 237275806 -- 1f1acb4e294af24d9f7598e85163d5e1d9958ae9 by Samuel Benzaquen <sbenza@google.com>: Avoid using aliases in the SFINAE expressions to make it more compatible with MSVC. Turn on the tests in MSVC. PiperOrigin-RevId: 237261456 -- 06cf7de6250a0572ef90fa1176f742ca0451ce71 by Derek Mauro <dmauro@google.com>: Fix unused variable warning. PiperOrigin-RevId: 237108006 GitOrigin-RevId: 5dc8d7504b7c11710b19365a6582c288c8992366 Change-Id: Ife5182c80942945c4e8700844c8febb482d6ad82
Diffstat (limited to 'absl/base/internal/scoped_set_env_test.cc')
-rw-r--r--absl/base/internal/scoped_set_env_test.cc99
1 files changed, 99 insertions, 0 deletions
diff --git a/absl/base/internal/scoped_set_env_test.cc b/absl/base/internal/scoped_set_env_test.cc
new file mode 100644
index 00000000..4bd68c48
--- /dev/null
+++ b/absl/base/internal/scoped_set_env_test.cc
@@ -0,0 +1,99 @@
+// 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 = GetEnvironmentVariable(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