package conway_test

import (
	"testing"
)

import (
	. "github.com/meatballhat/box-o-sand/conway/go"
)

var TEST_SIMPLE_INITIAL_STATE = NewGameState(16, 16)

func init() {
	tsis := TEST_SIMPLE_INITIAL_STATE
	tsis.Set(0, 0, 1)
	tsis.Set(1, 0, 1)
	tsis.Set(0, 1, 1)
	tsis.Set(1, 1, 1)
}

func TestNewGameOfLifeHasCorrectDimensions(t *testing.T) {
	game := NewGameOfLife(16, 16)
	if game.Height != 16 || game.Width != 16 {
		t.Fail()
	}
}

func TestLiveCellWithFewerThanTwoLiveNeighborsDies(t *testing.T) {
	state := NewGameState(16, 16)
	state.ImportState(TEST_SIMPLE_INITIAL_STATE)

	if value, err := state.Get(0, 0); err != nil || value != 1 {
		t.Fail()
	}

	if value, err := state.Get(1, 0); err != nil || value != 1 {
		t.Fail()
	}

	if value, err := state.Get(0, 1); err != nil || value != 1 {
		t.Fail()
	}

	if value, err := state.Get(1, 1); err != nil || value != 1 {
		t.Fail()
	}
}

func TestNewGameStatesAreAllDead(t *testing.T) {
	state := NewGameState(4, 4)
	for x := 0; x < 3; x++ {
		for y := 0; y < 3; y++ {
			if state.Rows[y].Cols[x] != 0 {
				t.Fail()
			}
		}
	}
}

func TestGameStateCanGetCellValueByCoords(t *testing.T) {
	state := NewGameState(8, 8)
	if value, err := state.Get(2, 2); err != nil || value != 0 {
		t.Fail()
	}
}

func TestGameStateCanSetCellValueByCoords(t *testing.T) {
	state := NewGameState(8, 8)
	if err := state.Set(2, 5, 1); err != nil {
		t.Fail()
	}

	if value, err := state.Get(2, 5); err != nil || value != 1 {
		t.Fail()
	}
}

func TestGameStateCanEnlivenCellsByCoords(t *testing.T) {
	state := NewGameState(8, 8)
	if err := state.Enliven(0, 1); err != nil {
		t.Fail()
	}

	if value, err := state.Get(0, 1); err != nil || value != 1 {
		t.Fail()
	}
}

func TestGameStateCanDeadenCellsByCoords(t *testing.T) {
	state := NewGameState(8, 8)

	if err := state.Enliven(0, 1); err != nil {
		t.Fail()
	}

	if value, err := state.Get(0, 1); err != nil || value != 1 {
		t.Fail()
	}

	if err := state.Deaden(0, 1); err != nil {
		t.Fail()
	}

	if value, err := state.Get(0, 1); err != nil || value != 0 {
		t.Fail()
	}
}