turings-tarpit/tests/game_engine.cpp

#include <catch2/catch_test_macros.hpp>
#include "../game_engine.hpp"
#include <fmt/core.h>

using namespace fmt;

TEST_CASE("basic brainfuck test", "[brainfuck]") {
  Brainfucker bf;
  string code{"+.>+.>+.>"};

  bf.set_code(code);

  bf.run(code.size());

  REQUIRE(bf.data[0] == 1);
  REQUIRE(bf.data[1] == 1);
  REQUIRE(bf.data[2] == 1);

  bf.reset();

  REQUIRE(bf.data[0] == 0);
  REQUIRE(bf.data[1] == 0);
  REQUIRE(bf.data[2] == 0);

  REQUIRE(bf.code.empty());
}


TEST_CASE("brainfuck loop test", "[brainfuck]") {
  Brainfucker bf;
  const string expected{"Hello World!\n"};
  // this is a hello world program from wikipedia
  // but at the end I rewind dp so I can analyze it
  string code{"++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++."};

  bf.set_code(code);
  // have it run a bunch of times
  bf.run(10000);

  string output = bf.to_string();
  REQUIRE(output == expected);
}

TEST_CASE("game engine can start and take hit", "[game_engine]") {
  // test fails on purpose right now
  GameEngine game{4};
  string err{"error"};
  game.start_round();
  game.hit(err);
  game.end_round();
  REQUIRE(game.is_dead() == true);
}

TEST_CASE("", "[game_engine]") {
  // test fails on purpose right now
  GameEngine game{100};
  string err{"error"};

  game.start_round();
  game.hit(err);
  game.end_round();

  REQUIRE(game.hit_points < 100);
  REQUIRE(game.is_dead() == false);

  game.start_round();
  game.end_round();

  REQUIRE(game.hit_points == 100);
  REQUIRE(game.is_dead() == false);
}