1 // 2 // Copyright (C) 2009 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #ifndef UPDATE_ENGINE_FAKE_FILE_WRITER_H_ 18 #define UPDATE_ENGINE_FAKE_FILE_WRITER_H_ 19 20 #include <vector> 21 22 #include <base/macros.h> 23 #include <brillo/secure_blob.h> 24 25 #include "update_engine/payload_consumer/file_writer.h" 26 27 // FakeFileWriter is an implementation of FileWriter. It will succeed 28 // calls to Open(), Close(), but not do any work. All calls to Write() 29 // will append the passed data to an internal vector. 30 31 namespace chromeos_update_engine { 32 33 class FakeFileWriter : public FileWriter { 34 public: 35 FakeFileWriter() : was_opened_(false), was_closed_(false) {} 36 37 virtual int Open(const char* path, int flags, mode_t mode) { 38 CHECK(!was_opened_); 39 CHECK(!was_closed_); 40 was_opened_ = true; 41 return 0; 42 } 43 44 virtual ssize_t Write(const void* bytes, size_t count) { 45 CHECK(was_opened_); 46 CHECK(!was_closed_); 47 const char* char_bytes = reinterpret_cast<const char*>(bytes); 48 bytes_.insert(bytes_.end(), char_bytes, char_bytes + count); 49 return count; 50 } 51 52 virtual int Close() { 53 CHECK(was_opened_); 54 CHECK(!was_closed_); 55 was_closed_ = true; 56 return 0; 57 } 58 59 const brillo::Blob& bytes() { 60 return bytes_; 61 } 62 63 private: 64 // The internal store of all bytes that have been written 65 brillo::Blob bytes_; 66 67 // These are just to ensure FileWriter methods are called properly. 68 bool was_opened_; 69 bool was_closed_; 70 71 DISALLOW_COPY_AND_ASSIGN(FakeFileWriter); 72 }; 73 74 } // namespace chromeos_update_engine 75 76 #endif // UPDATE_ENGINE_FAKE_FILE_WRITER_H_ 77
