1 // 2 // Copyright (C) 2013 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 #include "shill/file_reader.h" 18 19 #include <string> 20 #include <vector> 21 22 #include <base/files/file_util.h> 23 #include <base/files/scoped_temp_dir.h> 24 #include <base/strings/string_util.h> 25 #include <gtest/gtest.h> 26 27 using base::FilePath; 28 using std::string; 29 using std::vector; 30 31 namespace shill { 32 33 class FileReaderTest : public ::testing::Test { 34 public: 35 void VerifyReadLines(const FilePath& path, const vector<string>& lines) { 36 string line; 37 EXPECT_FALSE(reader_.ReadLine(&line)); 38 EXPECT_TRUE(reader_.Open(path)); 39 for (size_t i = 0; i < lines.size(); ++i) { 40 EXPECT_TRUE(reader_.ReadLine(&line)); 41 EXPECT_EQ(lines[i], line); 42 } 43 EXPECT_FALSE(reader_.ReadLine(&line)); 44 reader_.Close(); 45 EXPECT_FALSE(reader_.ReadLine(&line)); 46 } 47 48 protected: 49 FileReader reader_; 50 }; 51 52 TEST_F(FileReaderTest, OpenNonExistentFile) { 53 EXPECT_FALSE(reader_.Open(FilePath("a_nonexistent_file"))); 54 } 55 56 TEST_F(FileReaderTest, OpenEmptyFile) { 57 base::ScopedTempDir temp_dir; 58 ASSERT_TRUE(temp_dir.CreateUniqueTempDir()); 59 FilePath path; 60 ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir.path(), &path)); 61 62 EXPECT_TRUE(reader_.Open(path)); 63 string line; 64 EXPECT_FALSE(reader_.ReadLine(&line)); 65 reader_.Close(); 66 } 67 68 TEST_F(FileReaderTest, ReadLine) { 69 vector<string> lines; 70 lines.push_back("this is"); 71 lines.push_back("a"); 72 lines.push_back(""); 73 lines.push_back("test"); 74 string content = base::JoinString(lines, "\n"); 75 76 base::ScopedTempDir temp_dir; 77 ASSERT_TRUE(temp_dir.CreateUniqueTempDir()); 78 FilePath path; 79 ASSERT_TRUE(base::CreateTemporaryFileInDir(temp_dir.path(), &path)); 80 81 // Test a file not ending with a new-line character 82 ASSERT_EQ(content.size(), 83 base::WriteFile(path, content.c_str(), content.size())); 84 VerifyReadLines(path, lines); 85 86 // Test a file ending with a new-line character 87 content.push_back('\n'); 88 ASSERT_EQ(content.size(), 89 base::WriteFile(path, content.c_str(), content.size())); 90 VerifyReadLines(path, lines); 91 } 92 93 } // namespace shill 94
