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#include "gtest/gtest.h"
#include <mbgl/map/map.hpp>
#include <mbgl/util/image.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/util/std.hpp>
#include <rapidjson/document.h>
#include <rapidjson/writer.h>
#include <rapidjson/stringbuffer.h>
#include <mbgl/platform/default/headless_view.hpp>
#include <mbgl/platform/default/headless_display.hpp>
#include <mbgl/platform/default/caching_http_file_source.hpp>
#include "./fixtures/fixture_log.hpp"
#include <dirent.h>
#include <signal.h>
#include <libgen.h>
#ifdef __linux__
#include <sys/prctl.h>
#endif
std::string base_directory;
namespace mbgl {
namespace platform {
std::string defaultCacheDatabase() {
// Disables the cache.
return "";
}
}
}
class ServerEnvironment : public ::testing::Environment {
public:
virtual void SetUp() {
pid = fork();
if (pid < 0) {
throw std::runtime_error("Cannot create web server");
} else if (pid == 0) {
#ifdef __linux__
prctl(PR_SET_PDEATHSIG, SIGHUP);
#endif
const auto executable = base_directory + "bin/server.py";
const char *port = "2900";
char *arg[] = { const_cast<char *>(executable.c_str()), const_cast<char *>(port), nullptr };
int ret = execv(executable.c_str(), arg);
// This call should not return. In case execve failed, we exit anyway.
if (ret < 0) {
fprintf(stderr, "Failed to start server: %s\n", strerror(errno));
}
exit(0);
} else {
display = std::make_shared<mbgl::HeadlessDisplay>();
}
}
virtual void TearDown() {
ASSERT_TRUE(pid);
kill(pid, SIGHUP);
}
std::shared_ptr<mbgl::HeadlessDisplay> display;
private:
pid_t pid = 0;
};
ServerEnvironment* env = nullptr;
GTEST_API_ int main(int argc, char *argv[]) {
// Note: glibc's dirname() **modifies** the argument and can't handle static strings.
std::string file { __FILE__ }; file = dirname(const_cast<char *>(file.c_str()));
if (file[0] == '/') {
// If __FILE__ is an absolute path, we don't have to guess from the argv 0.
base_directory = file + "/suite/";
} else {
std::string argv0 { argv[0] }; argv0 = dirname(const_cast<char *>(argv0.c_str()));
base_directory = argv0 + "/" + file + "/suite/";
}
testing::InitGoogleTest(&argc, argv);
env = new ServerEnvironment();
::testing::AddGlobalTestEnvironment(env);
return RUN_ALL_TESTS();
}
void rewriteLocalScheme(rapidjson::Value &value, rapidjson::Document::AllocatorType &allocator) {
ASSERT_TRUE(value.IsString());
auto string = std::string { value.GetString(),value.GetStringLength() };
if (string.compare(0, 8, "local://") == 0) {
string.replace(0, 8, "http://127.0.0.1:2900/");
value.SetString(string.data(), string.size(), allocator);
}
}
class HeadlessTest : public ::testing::TestWithParam<std::string> {};
TEST_P(HeadlessTest, render) {
using namespace mbgl;
const std::string& base = GetParam();
std::string style = util::read_file(base_directory + "tests/" + base + "/style.json");
std::string info = util::read_file(base_directory + "tests/" + base + "/info.json");
// Parse style.
rapidjson::Document styleDoc;
styleDoc.Parse<0>((const char *const)style.c_str());
ASSERT_FALSE(styleDoc.HasParseError());
ASSERT_TRUE(styleDoc.IsObject());
// Rewrite "local://" to "http://127.0.0.1:2900/".
if (styleDoc.HasMember("sprite")) {
rewriteLocalScheme(styleDoc["sprite"], styleDoc.GetAllocator());
}
if (styleDoc.HasMember("glyphs")) {
rewriteLocalScheme(styleDoc["glyphs"], styleDoc.GetAllocator());
}
if (styleDoc.HasMember("sources")) {
auto &sources = styleDoc["sources"];
ASSERT_TRUE(sources.IsObject());
for (auto source = sources.MemberBegin(), end = sources.MemberEnd(); source != end; source++) {
if (source->value.HasMember("tiles")) {
auto &tiles = source->value["tiles"];
ASSERT_TRUE(tiles.IsArray());
for (rapidjson::SizeType i = 0; i < tiles.Size(); i++) {
rewriteLocalScheme(tiles[i], styleDoc.GetAllocator());
}
}
if (source->value.HasMember("url")) {
rewriteLocalScheme(source->value["url"], styleDoc.GetAllocator());
}
}
}
// Convert the JSON object back into a stringified version.
rapidjson::StringBuffer buffer;
rapidjson::Writer<rapidjson::StringBuffer> writer(buffer);
styleDoc.Accept(writer);
style = buffer.GetString();
// Parse settings.
rapidjson::Document infoDoc;
infoDoc.Parse<0>((const char *const)info.c_str());
ASSERT_FALSE(infoDoc.HasParseError());
ASSERT_TRUE(infoDoc.IsObject());
Log::Set<FixtureLogBackend>();
for (auto it = infoDoc.MemberBegin(), end = infoDoc.MemberEnd(); it != end; it++) {
const std::string name {
it->name.GetString(), it->name.GetStringLength()
};
const rapidjson::Value& value = it->value;
ASSERT_TRUE(value.IsObject());
if (value.HasMember("center")) ASSERT_TRUE(value["center"].IsArray());
const std::string actual_image = base_directory + "tests/" + base + "/" + name + "/actual.png";
const double zoom = value.HasMember("zoom") ? value["zoom"].GetDouble() : 0;
const double bearing = value.HasMember("bearing") ? value["bearing"].GetDouble() : 0;
const double latitude = value.HasMember("center") ? value["center"][rapidjson::SizeType(0)].GetDouble() : 0;
const double longitude = value.HasMember("center") ? value["center"][rapidjson::SizeType(1)].GetDouble() : 0;
const unsigned int width = value.HasMember("width") ? value["width"].GetUint() : 512;
const unsigned int height = value.HasMember("height") ? value["height"].GetUint() : 512;
const unsigned int pixelRatio = value.HasMember("pixelRatio") ? value["pixelRatio"].GetUint() : 1;
std::vector<std::string> classes;
if (value.HasMember("classes")) {
const rapidjson::Value& js_classes = value["classes"];
ASSERT_TRUE(js_classes.IsArray());
for (rapidjson::SizeType i = 0; i < js_classes.Size(); i++) {
const rapidjson::Value& js_class = js_classes[i];
ASSERT_TRUE(js_class.IsString());
classes.push_back({ js_class.GetString(), js_class.GetStringLength() });
}
}
HeadlessView view(env->display);
CachingHTTPFileSource fileSource(platform::defaultCacheDatabase());
Map map(view, fileSource);
map.setStyleJSON(style, base_directory);
map.setAppliedClasses(classes);
view.resize(width, height, pixelRatio);
map.resize(width, height, pixelRatio);
map.setLonLatZoom(longitude, latitude, zoom);
map.setBearing(bearing);
// Run the loop. It will terminate when we don't have any further listeners.
map.run();
const unsigned int w = width * pixelRatio;
const unsigned int h = height * pixelRatio;
auto pixels = view.readPixels();
const std::string image = util::compress_png(w, h, pixels.get());
util::write_file(actual_image, image);
}
}
INSTANTIATE_TEST_CASE_P(Headless, HeadlessTest, ::testing::ValuesIn([] {
std::vector<std::string> names;
DIR *dir = opendir((base_directory + "tests").c_str());
if (dir == nullptr) {
return names;
}
for (dirent *dp = nullptr; (dp = readdir(dir)) != nullptr;) {
const std::string name = dp->d_name;
if (name != "." && name != ".." && name != "index.html") {
names.push_back(name);
}
}
closedir(dir);
return names;
}()));
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