extensions/browser/file_reader_unittest.cc

   1 // Copyright (c) 2011 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/bind.h"
   6 #include "base/bind_helpers.h"
   7 #include "base/file_util.h"
   8 #include "base/files/file_path.h"
   9 #include "base/message_loop/message_loop.h"
  10 #include "base/path_service.h"
  11 #include "content/public/test/test_browser_thread.h"
  12 #include "extensions/browser/file_reader.h"
  13 #include "extensions/common/extension_paths.h"
  14 #include "extensions/common/extension_resource.h"
  15 #include "extensions/common/id_util.h"
  16 #include "testing/gtest/include/gtest/gtest.h"
  17
  18 using content::BrowserThread;
  19
  20 namespace extensions {
  21
  22 class FileReaderTest : public testing::Test {
  23  public:
  24   FileReaderTest() : file_thread_(BrowserThread::FILE) {
  25     file_thread_.Start();
  26   }
  27  private:
  28   base::MessageLoop message_loop_;
  29   content::TestBrowserThread file_thread_;
  30 };
  31
  32 class Receiver {
  33  public:
  34   Receiver() : succeeded_(false) {
  35   }
  36
  37   FileReader::Callback NewCallback() {
  38     return base::Bind(&Receiver::DidReadFile, base::Unretained(this));
  39   }
  40
  41   bool succeeded() const { return succeeded_; }
  42   const std::string& data() const { return data_; }
  43
  44  private:
  45   void DidReadFile(bool success, const std::string& data) {
  46     succeeded_ = success;
  47     data_ = data;
  48     base::MessageLoop::current()->Quit();
  49   }
  50
  51   bool succeeded_;
  52   std::string data_;
  53 };
  54
  55 void RunBasicTest(const char* filename) {
  56   base::FilePath path;
  57   PathService::Get(DIR_TEST_DATA, &path);
  58   std::string extension_id = id_util::GenerateId("test");
  59   ExtensionResource resource(
  60       extension_id, path, base::FilePath().AppendASCII(filename));
  61   path = path.AppendASCII(filename);
  62
  63   std::string file_contents;
  64   ASSERT_TRUE(base::ReadFileToString(path, &file_contents));
  65
  66   Receiver receiver;
  67
  68   scoped_refptr<FileReader> file_reader(
  69       new FileReader(resource, receiver.NewCallback()));
  70   file_reader->Start();
  71
  72   base::MessageLoop::current()->Run();
  73
  74   EXPECT_TRUE(receiver.succeeded());
  75   EXPECT_EQ(file_contents, receiver.data());
  76 }
  77
  78 TEST_F(FileReaderTest, SmallFile) {
  79   RunBasicTest("smallfile");
  80 }
  81
  82 TEST_F(FileReaderTest, BiggerFile) {
  83   RunBasicTest("bigfile");
  84 }
  85
  86 TEST_F(FileReaderTest, NonExistantFile) {
  87   base::FilePath path;
  88   PathService::Get(DIR_TEST_DATA, &path);
  89   std::string extension_id = id_util::GenerateId("test");
  90   ExtensionResource resource(extension_id, path, base::FilePath(
  91       FILE_PATH_LITERAL("file_that_does_not_exist")));
  92   path = path.AppendASCII("file_that_does_not_exist");
  93
  94   Receiver receiver;
  95
  96   scoped_refptr<FileReader> file_reader(
  97       new FileReader(resource, receiver.NewCallback()));
  98   file_reader->Start();
  99
 100   base::MessageLoop::current()->Run();
 101
 102   EXPECT_FALSE(receiver.succeeded());
 103 }
 104
 105 }  // namespace extensions