1 /* 2 * Copyright (C) 2018 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 <dirent.h> 18 #include <stdio.h> 19 #include <stdlib.h> 20 21 #include <memory> 22 #include <string> 23 #include <vector> 24 25 #include <android-base/file.h> 26 #include <android-base/strings.h> 27 #include <gtest/gtest.h> 28 #include <png.h> 29 30 #include "minui/minui.h" 31 #include "private/resources.h" 32 33 static const std::string kLocale = "zu"; 34 35 static const std::vector<std::string> kResourceImagesDirs{ 36 "res-mdpi/images/", "res-hdpi/images/", "res-xhdpi/images/", 37 "res-xxhdpi/images/", "res-xxxhdpi/images/", 38 }; 39 40 static int png_filter(const dirent* de) { 41 if (de->d_type != DT_REG || !android::base::EndsWith(de->d_name, "_text.png")) { 42 return 0; 43 } 44 return 1; 45 } 46 47 // Finds out all the PNG files to test, which stay under the same dir with the executabl.. 48 static std::vector<std::string> add_files() { 49 std::vector<std::string> files; 50 for (const std::string& images_dir : kResourceImagesDirs) { 51 static std::string exec_dir = android::base::GetExecutableDirectory(); 52 std::string dir_path = exec_dir + "/" + images_dir; 53 dirent** namelist; 54 int n = scandir(dir_path.c_str(), &namelist, png_filter, alphasort); 55 if (n == -1) { 56 printf("Failed to scandir %s: %s\n", dir_path.c_str(), strerror(errno)); 57 continue; 58 } 59 if (n == 0) { 60 printf("No file is added for test in %s\n", dir_path.c_str()); 61 } 62 63 while (n--) { 64 std::string file_path = dir_path + namelist[n]->d_name; 65 files.push_back(file_path); 66 free(namelist[n]); 67 } 68 free(namelist); 69 } 70 return files; 71 } 72 73 class ResourcesTest : public testing::TestWithParam<std::string> { 74 public: 75 static std::vector<std::string> png_list; 76 77 protected: 78 void SetUp() override { 79 png_ = std::make_unique<PngHandler>(GetParam()); 80 ASSERT_TRUE(png_); 81 82 ASSERT_EQ(PNG_COLOR_TYPE_GRAY, png_->color_type()) << "Recovery expects grayscale PNG file."; 83 ASSERT_LT(static_cast<png_uint_32>(5), png_->width()); 84 ASSERT_LT(static_cast<png_uint_32>(0), png_->height()); 85 ASSERT_EQ(1, png_->channels()) << "Recovery background text images expects 1-channel PNG file."; 86 } 87 88 std::unique_ptr<PngHandler> png_{ nullptr }; 89 }; 90 91 // Parses a png file and tests if it's qualified for the background text image under recovery. 92 TEST_P(ResourcesTest, ValidateLocale) { 93 std::vector<unsigned char> row(png_->width()); 94 for (png_uint_32 y = 0; y < png_->height(); ++y) { 95 png_read_row(png_->png_ptr(), row.data(), nullptr); 96 int w = (row[1] << 8) | row[0]; 97 int h = (row[3] << 8) | row[2]; 98 int len = row[4]; 99 EXPECT_LT(0, w); 100 EXPECT_LT(0, h); 101 EXPECT_LT(0, len) << "Locale string should be non-empty."; 102 EXPECT_NE(0, row[5]) << "Locale string is missing."; 103 104 ASSERT_GE(png_->height(), y + 1 + h) << "Locale: " << kLocale << " is not found in the file."; 105 char* loc = reinterpret_cast<char*>(&row[5]); 106 if (matches_locale(loc, kLocale.c_str())) { 107 EXPECT_TRUE(android::base::StartsWith(loc, kLocale)); 108 break; 109 } 110 for (int i = 0; i < h; ++i, ++y) { 111 png_read_row(png_->png_ptr(), row.data(), nullptr); 112 } 113 } 114 } 115 116 std::vector<std::string> ResourcesTest::png_list = add_files(); 117 118 INSTANTIATE_TEST_CASE_P(BackgroundTextValidation, ResourcesTest, 119 ::testing::ValuesIn(ResourcesTest::png_list.cbegin(), 120 ResourcesTest::png_list.cend())); 121
