//
//  TIATests.m
//  Clock Signal
//
//  Created by Thomas Harte on 12/02/2017.
//  Copyright © 2017 Thomas Harte. All rights reserved.
//

#import <XCTest/XCTest.h>

#include "TIA.hpp"

static uint8_t *line;
static void receive_line(uint8_t *next_line)
{
	line = next_line;
}

@interface TIATests : XCTestCase
@end

@implementation TIATests {
	std::unique_ptr<Atari2600::TIA> _tia;
}

- (void)setUp
{
	[super setUp];
	std::function<void(uint8_t *)> function = receive_line;
	_tia.reset(new Atari2600::TIA(function));
	line = nullptr;
}

- (void)testReflectedPlayfield
{
	// set reflected, bit pattern 1000
	_tia->set_playfield_control_and_ball_size(1);
	_tia->set_playfield(0, 0x10);
	_tia->set_playfield(1, 0xf0);
	_tia->set_playfield(2, 0x0e);
	_tia->run_for_cycles(228);

	XCTAssert(line != nullptr, @"228 cycles should have ended the line");

	uint8_t expected_line[] = {
		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		0, 0, 0, 0,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		0, 0, 0, 0,
		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,
		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		1, 1, 1, 1
	};
	XCTAssert(!memcmp(expected_line, line, sizeof(expected_line)));
}

- (void)testRepeatedPlayfield
{
	// set reflected, bit pattern 1000
	_tia->set_playfield_control_and_ball_size(0);
	_tia->set_playfield(0, 0x10);
	_tia->set_playfield(1, 0xf0);
	_tia->set_playfield(2, 0x0e);
	_tia->run_for_cycles(228);

	XCTAssert(line != nullptr, @"228 cycles should have ended the line");

	uint8_t expected_line[] = {
		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		0, 0, 0, 0,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
		0, 0, 0, 0,		1, 1, 1, 1,		1, 1, 1, 1,		1, 1, 1, 1,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,		0, 0, 0, 0,
	};
	XCTAssert(!memcmp(expected_line, line, sizeof(expected_line)));
}

@end