cpp-game-engine/engine/test/serial_test.cxx

//
//  serial_test.cxx
//  engine-test
//
//  Created by Sam Jaffe on 6/2/19.
//  Copyright © 2019 Sam Jaffe. All rights reserved.
//

#include <sstream>

#include "mock_renderer.h"
#include <gmock/gmock.h>

#include <json/json.h>
#include <json/reader.h>

#include "game/engine/serial.hpp"

Json::Value to_json(std::string const & str) {
  Json::Value json;
  std::stringstream(str) >> json;
  return json;
}

struct SerialTest : testing::Test {};

using testing::Eq;

TEST_F(SerialTest, ReadsIntegerVector) {
  math::vec2i const expected{{1, 5}};
  std::string const data = "[1,5]";
  EXPECT_THAT(engine::to_vec2i(to_json(data)), Eq(expected));
}

TEST_F(SerialTest, ReadsIntegerVectorFromFloats) {
  math::vec2i const expected{{1, 5}};
  std::string const data = "[1.5,5.01]";
  EXPECT_THAT(engine::to_vec2i(to_json(data)), Eq(expected));
}

TEST_F(SerialTest, ReadsFloatVector) {
  math::vec2 const expected{{1.5, 5.01}};
  std::string const data = "[1.5,5.01]";
  EXPECT_THAT(engine::to_vec2(to_json(data)), Eq(expected));
}

TEST_F(SerialTest, ReadsFloatVectorFromInts) {
  math::vec2 const expected{{1, 5}};
  std::string const data = "[1,5]";
  EXPECT_THAT(engine::to_vec2(to_json(data)), Eq(expected));
}

TEST_F(SerialTest, MissingFloatDataIsZero) {
  math::vec2 const expected{{1, 0}};
  std::string const data = "[1]";
  EXPECT_THAT(engine::to_vec2(to_json(data)), Eq(expected));
}

TEST_F(SerialTest, FallbackReaderDoesntInvokeIfArray) {
  math::vec2 const expected{{0, 0}};
  std::string const data = "[]";
  EXPECT_THAT(engine::to_vec2(to_json(data), {{1, 5}}), Eq(expected));
}

TEST_F(SerialTest, FallbackReaderActivatesOnNull) {
  math::vec2 const expected{{1, 5}};
  std::string const data = "null";
  EXPECT_THAT(engine::to_vec2(to_json(data), {{1, 5}}), Eq(expected));
}