MapCircleTest.java

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package jsettlers.common.map.shapes;

import jsettlers.common.position.SRectangle;
import jsettlers.common.position.ShortPoint2D;
import org.junit.Test;

import static org.junit.Assert.*;

public class MapCircleTest {

	@Test
	public void testGetBorders() {
		for (int i = 1; i < 40; i++) {
			MapCircle circle = new MapCircle(new ShortPoint2D(100, 100), i);

			SRectangle borders = circle.getBorders();
			for (ShortPoint2D curr : circle) {
				if (!borders.contains(curr)) {
					fail("position: " + curr + " is not in the border " + borders + " radius: " + i);
				}
			}
		}
	}

	@Test
	public void testStream() {
		for (int i = 0; i < 40; i++) {
			MapCircle circle = new MapCircle(new ShortPoint2D(100, 100), i);

			MapCircleIterator iterator = circle.iterator();

			circle.stream().forEach((x, y) -> {
				assertTrue(iterator.hasNext());
				ShortPoint2D expected = iterator.next();
				assertEquals(expected, new ShortPoint2D(x, y));
			});

			assertFalse(iterator.hasNext());
		}
	}

	@Test
	public void testBorderStream() {
		for (int i = 1; i < 40; i++) {
			MapCircle circle = new MapCircle(new ShortPoint2D(100, 100), i);
			MapCircle oneSmallerCircle = new MapCircle(new ShortPoint2D(100, 100), i - 1);

			circle.streamBorder().forEach((x, y) -> {
				assertTrue(circle.contains(x, y));
				assertTrue(!oneSmallerCircle.contains(x, y));
			});

			int maxCount = circle.stream().count() - oneSmallerCircle.stream().count();
			int actualCount = circle.streamBorder().count();
			assertTrue(actualCount <= maxCount);
		}
	}
}