Java/src/test/java/com/generation/SimplexNoiseTest.java at Development · Saitop/Java

50 lines (33 loc) · 1.19 KB

package src.test.java.com.generation;

import static org.junit.jupiter.api.Assertions.*;

import java.awt.Color;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.io.InputStream;

import javax.imageio.ImageIO;

import org.junit.jupiter.api.Test;

import src.main.java.com.generation.SimplexNoise;

public class SimplexNoiseTest {

@Test

public void testGenerateHeightMap() {

final int WIDTH = 256;

final int HEIGHT = 256;

final int X = 0;

final int Y = 0;

final String RESOURCE_NAME = "src/test/java/com/generation/expected-result.png";

float[][] heightmap = new SimplexNoise(50, 0.3F, 1111111111111111L).generateHeightMap(X, Y, WIDTH, HEIGHT);

BufferedImage image = null;

try(InputStream in = this.getClass().getClassLoader().getResourceAsStream(RESOURCE_NAME)) {

image = ImageIO.read(in);

assertEquals(WIDTH, image.getWidth());

assertEquals(HEIGHT, image.getHeight());

} catch(IOException | IllegalArgumentException exception) {

fail(exception);

}

for(int x = 0; x < WIDTH; x++) {

for(int y = 0; y < HEIGHT; y++) {

assertEquals(new Color(image.getRGB(x, y)).getRed(), (int)(heightmap[x][y] * 255));

}

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