pgm_test.go

package main

import (
	"fmt"
	"testing"

	"uk.ac.bris.cs/gameoflife/gol"
)

// Pgm tests 16x16, 64x64 and 512x512 image output files on 0, 1 and 100 turns using 1-16 worker threads.
func TestPgm(t *testing.T) {
	tests := []gol.Params{
		{ImageWidth: 16, ImageHeight: 16},
		{ImageWidth: 64, ImageHeight: 64},
		{ImageWidth: 512, ImageHeight: 512},
	}
	for _, p := range tests {
		for _, turns := range []int{0, 1, 100} {
			p.Turns = turns
			expectedAlive := readAliveCells(
				"check/images/"+fmt.Sprintf("%vx%vx%v.pgm", p.ImageWidth, p.ImageHeight, turns),
				p.ImageWidth,
				p.ImageHeight,
			)

			emptyOutFolder()

			for threads := 1; threads <= 16; threads++ {
				p.Threads = threads
				testName := fmt.Sprintf("%dx%dx%d-%d", p.ImageWidth, p.ImageHeight, p.Turns, p.Threads)
				t.Run(testName, func(t *testing.T) {
					events := make(chan gol.Event)
					go gol.Run(p, events, nil)
					for range events {
					}
					cellsFromImage := readAliveCells(
						"out/"+fmt.Sprintf("%vx%vx%v.pgm", p.ImageWidth, p.ImageHeight, turns),
						p.ImageWidth,
						p.ImageHeight,
					)
					assertEqualBoard(t, cellsFromImage, expectedAlive, p)
				})
			}
		}
	}
}