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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <memory>
#include <string>
#include <vector>
#include <android-base/file.h>
#include <android-base/strings.h>
#include <gtest/gtest.h>
#include <png.h>
#include "minui/minui.h"
#include "private/resources.h"
static const std::string kLocale = "zu";
static const std::vector<std::string> kResourceImagesDirs{
"res-mdpi/images/", "res-hdpi/images/", "res-xhdpi/images/",
"res-xxhdpi/images/", "res-xxxhdpi/images/",
};
static int png_filter(const dirent* de) {
if (de->d_type != DT_REG || !android::base::EndsWith(de->d_name, "_text.png")) {
return 0;
}
return 1;
}
// Finds out all the PNG files to test, which stay under the same dir with the executabl..
static std::vector<std::string> add_files() {
std::vector<std::string> files;
for (const std::string& images_dir : kResourceImagesDirs) {
static std::string exec_dir = android::base::GetExecutableDirectory();
std::string dir_path = exec_dir + "/" + images_dir;
dirent** namelist;
int n = scandir(dir_path.c_str(), &namelist, png_filter, alphasort);
if (n == -1) {
printf("Failed to scandir %s: %s\n", dir_path.c_str(), strerror(errno));
continue;
}
if (n == 0) {
printf("No file is added for test in %s\n", dir_path.c_str());
}
while (n--) {
std::string file_path = dir_path + namelist[n]->d_name;
files.push_back(file_path);
free(namelist[n]);
}
free(namelist);
}
return files;
}
class ResourcesTest : public testing::TestWithParam<std::string> {
public:
static std::vector<std::string> png_list;
protected:
void SetUp() override {
png_ = std::make_unique<PngHandler>(GetParam());
ASSERT_TRUE(png_);
ASSERT_EQ(PNG_COLOR_TYPE_GRAY, png_->color_type()) << "Recovery expects grayscale PNG file.";
ASSERT_LT(static_cast<png_uint_32>(5), png_->width());
ASSERT_LT(static_cast<png_uint_32>(0), png_->height());
ASSERT_EQ(1, png_->channels()) << "Recovery background text images expects 1-channel PNG file.";
}
std::unique_ptr<PngHandler> png_{ nullptr };
};
// Parses a png file and tests if it's qualified for the background text image under recovery.
TEST_P(ResourcesTest, ValidateLocale) {
std::vector<unsigned char> row(png_->width());
for (png_uint_32 y = 0; y < png_->height(); ++y) {
png_read_row(png_->png_ptr(), row.data(), nullptr);
int w = (row[1] << 8) | row[0];
int h = (row[3] << 8) | row[2];
int len = row[4];
EXPECT_LT(0, w);
EXPECT_LT(0, h);
EXPECT_LT(0, len) << "Locale string should be non-empty.";
EXPECT_NE(0, row[5]) << "Locale string is missing.";
ASSERT_GE(png_->height(), y + 1 + h) << "Locale: " << kLocale << " is not found in the file.";
char* loc = reinterpret_cast<char*>(&row[5]);
if (matches_locale(loc, kLocale.c_str())) {
EXPECT_TRUE(android::base::StartsWith(loc, kLocale));
break;
}
for (int i = 0; i < h; ++i, ++y) {
png_read_row(png_->png_ptr(), row.data(), nullptr);
}
}
}
std::vector<std::string> ResourcesTest::png_list = add_files();
INSTANTIATE_TEST_CASE_P(BackgroundTextValidation, ResourcesTest,
::testing::ValuesIn(ResourcesTest::png_list.cbegin(),
ResourcesTest::png_list.cend()));
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