chromecast/base/error_codes_unittest.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/base_paths.h"
   6 #include "base/files/file_path.h"
   7 #include "base/files/file_util.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/test/scoped_path_override.h"
  10 #include "chromecast/base/error_codes.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 namespace chromecast {
  14
  15 class ErrorCodesTest : public testing::Test {
  16  protected:
  17   ErrorCodesTest() {}
  18   ~ErrorCodesTest() override {}
  19
  20   void SetUp() override {
  21     // Set up a temporary directory which will be used as our fake home dir.
  22     ASSERT_TRUE(base::CreateNewTempDirectory("", &fake_home_dir_));
  23     path_override_.reset(
  24         new base::ScopedPathOverride(base::DIR_HOME, fake_home_dir_));
  25   }
  26
  27   base::FilePath fake_home_dir_;
  28   scoped_ptr<base::ScopedPathOverride> path_override_;
  29 };
  30
  31 TEST_F(ErrorCodesTest, GetInitialErrorCodeReturnsNoErrorIfMissingFile) {
  32   EXPECT_EQ(NO_ERROR, GetInitialErrorCode());
  33 }
  34
  35 TEST_F(ErrorCodesTest, SetInitialErrorCodeSucceedsWithNoError) {
  36   ASSERT_TRUE(SetInitialErrorCode(NO_ERROR));
  37
  38   // File should not be written.
  39   ASSERT_FALSE(base::PathExists(fake_home_dir_.Append("initial_error")));
  40   EXPECT_EQ(NO_ERROR, GetInitialErrorCode());
  41 }
  42
  43 TEST_F(ErrorCodesTest, SetInitialErrorCodeSucceedsWithValidErrors) {
  44   // Write initial error and read it from the file.
  45   EXPECT_TRUE(SetInitialErrorCode(ERROR_WEB_CONTENT_RENDER_VIEW_GONE));
  46   EXPECT_TRUE(base::PathExists(fake_home_dir_.Append("initial_error")));
  47   EXPECT_EQ(ERROR_WEB_CONTENT_RENDER_VIEW_GONE, GetInitialErrorCode());
  48
  49   // File should be updated with most recent error.
  50   EXPECT_TRUE(SetInitialErrorCode(ERROR_UNKNOWN));
  51   EXPECT_TRUE(base::PathExists(fake_home_dir_.Append("initial_error")));
  52   EXPECT_EQ(ERROR_UNKNOWN, GetInitialErrorCode());
  53
  54   // File should be updated with most recent error.
  55   EXPECT_TRUE(SetInitialErrorCode(ERROR_WEB_CONTENT_NAME_NOT_RESOLVED));
  56   EXPECT_TRUE(base::PathExists(fake_home_dir_.Append("initial_error")));
  57   EXPECT_EQ(ERROR_WEB_CONTENT_NAME_NOT_RESOLVED, GetInitialErrorCode());
  58
  59   // File should be removed after writing NO_ERROR.
  60   EXPECT_TRUE(SetInitialErrorCode(NO_ERROR));
  61   EXPECT_FALSE(base::PathExists(fake_home_dir_.Append("initial_error")));
  62   EXPECT_EQ(NO_ERROR, GetInitialErrorCode());
  63 }
  64
  65 }  // namespace chromecast