Create setting that disables password stores

components/os_crypt/key_storage_util_linux_unittest.cc

+// Copyright 2017 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 "components/os_crypt/key_storage_util_linux.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/logging.h"
+#include "base/macros.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+class KeyStorageUtilLinuxTest : public testing::Test {
+ public:
+  KeyStorageUtilLinuxTest() = default;
+  ~KeyStorageUtilLinuxTest() override = default;
+
+  void SetUp() override {
+    ASSERT_TRUE(base::CreateNewTempDirectory("", &fake_user_data_dir_));
+  }
+
+  void TearDown() override {
+    ASSERT_TRUE(base::DeleteFile(fake_user_data_dir_, true));
+  }
+
+ protected:
+  base::FilePath fake_user_data_dir_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(KeyStorageUtilLinuxTest);
+};
+
+TEST_F(KeyStorageUtilLinuxTest, FirstTimeDefaultsToTrue) {
+  EXPECT_TRUE(os_crypt::GetBackendUse(fake_user_data_dir_));
+}
+
+TEST_F(KeyStorageUtilLinuxTest, SetToTrue) {
+  EXPECT_TRUE(os_crypt::WriteBackendUse(fake_user_data_dir_, true));
+  EXPECT_TRUE(os_crypt::GetBackendUse(fake_user_data_dir_));
+}
+
+TEST_F(KeyStorageUtilLinuxTest, SetToFalse) {
+  EXPECT_TRUE(os_crypt::WriteBackendUse(fake_user_data_dir_, false));
+  EXPECT_FALSE(os_crypt::GetBackendUse(fake_user_data_dir_));
+}
+
+TEST_F(KeyStorageUtilLinuxTest, MultipleWrites) {
+  EXPECT_TRUE(os_crypt::WriteBackendUse(fake_user_data_dir_, false));
+  EXPECT_FALSE(os_crypt::GetBackendUse(fake_user_data_dir_));
+
+  EXPECT_TRUE(os_crypt::WriteBackendUse(fake_user_data_dir_, true));
+  EXPECT_TRUE(os_crypt::GetBackendUse(fake_user_data_dir_));
+
+  EXPECT_TRUE(os_crypt::WriteBackendUse(fake_user_data_dir_, false));
+  EXPECT_FALSE(os_crypt::GetBackendUse(fake_user_data_dir_));
+}
+
+}  // namespace