base: Rename EnvVarGetter to Environment.

Now EnvVarGetter do much more than getting environment variables.

Per suggestion from Pawel in http://codereview.chromium.org/3043018/.

BUG=None
TEST=trybots

Signed-off-by: Thiago Farina <tfarina@chromium.org>

Review URL: http://codereview.chromium.org/3052034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@54696 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 57 insertions, 0 deletions

diff --git a/base/environment_unittest.cc b/base/environment_unittest.cc
new file mode 100644
index 0000000..5b4ddc3
--- /dev/null
+++ b/base/environment_unittest.cc
@@ -0,0 +1,57 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/environment.h"
+#include "base/scoped_ptr.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+typedef PlatformTest EnvironmentTest;
+
+TEST_F(EnvironmentTest, GetEnvVar) {
+  // Every setup should have non-empty PATH...
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+  std::string env_value;
+  EXPECT_TRUE(env->GetEnv("PATH", &env_value));
+  EXPECT_NE(env_value, "");
+}
+
+TEST_F(EnvironmentTest, HasEnvVar) {
+  // Every setup should have PATH...
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+  EXPECT_TRUE(env->HasEnv("PATH"));
+}
+
+TEST_F(EnvironmentTest, SetEnvVar) {
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+
+  const char kFooUpper[] = "FOO";
+  const char kFooLower[] = "foo";
+  EXPECT_TRUE(env->SetEnv(kFooUpper, kFooLower));
+
+  // Now verify that the environment has the new variable.
+  EXPECT_TRUE(env->HasEnv(kFooUpper));
+
+  std::string var_value;
+  EXPECT_TRUE(env->GetEnv(kFooUpper, &var_value));
+  EXPECT_EQ(var_value, kFooLower);
+}
+
+TEST_F(EnvironmentTest, UnSetEnvVar) {
+  scoped_ptr<base::Environment> env(base::Environment::Create());
+
+  const char kFooUpper[] = "FOO";
+  const char kFooLower[] = "foo";
+  // First set some environment variable.
+  EXPECT_TRUE(env->SetEnv(kFooUpper, kFooLower));
+
+  // Now verify that the environment has the new variable.
+  EXPECT_TRUE(env->HasEnv(kFooUpper));
+
+  // Finally verify that the environment variable was erased.
+  EXPECT_TRUE(env->UnSetEnv(kFooUpper));
+
+  // And check that the variable has been unset.
+  EXPECT_FALSE(env->HasEnv(kFooUpper));
+}