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/*
* Copyright (C) 2019 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.
*/
#pragma once
#include <unistd.h>
#include <memory>
#include <string>
#include <android-base/file.h>
#include <android-base/strings.h>
#include <gtest/gtest.h>
#include <json/reader.h>
#include <json/writer.h>
#include <jsonpb/jsonpb.h>
#include <jsonpb/verify.h>
// JsonSchemaTest test that a given JSON file conforms to a given schema.
// This includes:
// - libprotobuf can parse the given JSON file using the given Prototype class
// - Additional checks on field names of the JSON file, and types of values.
namespace android {
namespace jsonpb {
class JsonSchemaTestConfig {
public:
virtual ~JsonSchemaTestConfig() = default;
virtual std::unique_ptr<google::protobuf::Message> CreateMessage() const = 0;
virtual std::string file_path() const = 0;
/**
* If it returns true, tests are skipped when the file is not found.
*/
virtual bool optional() const { return false; }
};
using JsonSchemaTestConfigFactory = std::function<std::unique_ptr<JsonSchemaTestConfig>()>;
template <typename T>
class AbstractJsonSchemaTestConfig : public JsonSchemaTestConfig {
public:
AbstractJsonSchemaTestConfig(const std::string& path) : file_path_(path){};
std::unique_ptr<google::protobuf::Message> CreateMessage() const override {
return std::make_unique<T>();
}
std::string file_path() const override { return file_path_; }
private:
std::string file_path_;
};
template <typename T>
JsonSchemaTestConfigFactory MakeTestParam(const std::string& path) {
return [path]() { return std::make_unique<AbstractJsonSchemaTestConfig<T>>(path); };
}
class JsonSchemaTest : public ::testing::TestWithParam<JsonSchemaTestConfigFactory> {
public:
void SetUp() override {
auto&& config = ::testing::TestWithParam<JsonSchemaTestConfigFactory>::GetParam()();
file_path_ = config->file_path();
if (access(file_path_.c_str(), F_OK) == -1) {
ASSERT_EQ(ENOENT, errno) << "File '" << file_path_
<< "' is not accessible: " << strerror(errno);
ASSERT_TRUE(config->optional()) << "Missing mandatory file " << file_path_;
GTEST_SKIP();
}
ASSERT_TRUE(android::base::ReadFileToString(file_path_, &json_));
ASSERT_FALSE(json_.empty()) << "File '" << file_path_ << "' exists but is empty";
object_ = config->CreateMessage();
auto res = internal::JsonStringToMessage(json_, object_.get());
ASSERT_TRUE(res.ok()) << "Invalid format of file " << file_path_ << ": " << res.error();
}
google::protobuf::Message* message() const { return object_.get(); }
std::string file_path_;
std::string json_;
std::unique_ptr<google::protobuf::Message> object_;
};
// Test that the JSON file has no fields unknown by the schema. See
// AllFieldsAreKnown() for more details.
TEST_P(JsonSchemaTest, NoUnknownFields) {
std::string error;
EXPECT_TRUE(AllFieldsAreKnown(*object_, json_, &error))
<< "File: " << file_path_ << ": " << error;
}
TEST_P(JsonSchemaTest, EqReformattedJson) {
std::string error;
EXPECT_TRUE(EqReformattedJson(json_, object_.get(), &error))
<< "File: " << file_path_ << ": " << error;
}
} // namespace jsonpb
} // namespace android
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