RectangleTest.java example

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jo-widgets-master
/*
 * Copyright (c) 2015, MGrossmann
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package org.jowidgets.common.types;

import junit.framework.Assert;

import org.junit.Test;

public class RectangleTest {

    @Test
    public void testIntersectItenticalRectangle() {
        final Rectangle r1 = new Rectangle(10, 12, 14, 15);
        Assert.assertEquals(r1, r1.intersect(r1));
        Assert.assertFalse(r1.isDisjunctWith(r1));
    }

    @Test
    public void testIntersectOverlapOfOneXRectangle() {
        final Rectangle r1 = new Rectangle(0, 0, 4, 1);
        final Rectangle r2 = new Rectangle(3, 0, 4, 1);
        final Rectangle expected = new Rectangle(3, 0, 1, 1);
        Assert.assertEquals(expected, r1.intersect(r2));
        Assert.assertEquals(expected, r2.intersect(r1));
        Assert.assertFalse(r1.isDisjunctWith(r2));
        Assert.assertFalse(r2.isDisjunctWith(r1));
    }

    @Test
    public void testIntersectNoOverlapXRectangle() {
        final Rectangle r1 = new Rectangle(0, 0, 3, 1);
        final Rectangle r2 = new Rectangle(3, 0, 3, 1);
        Assert.assertNull(r1.intersect(r2));
        Assert.assertNull(r2.intersect(r1));
        Assert.assertTrue(r1.isDisjunctWith(r2));
        Assert.assertTrue(r2.isDisjunctWith(r1));
    }

    @Test
    public void testIntersectOverlapOfOneYRectangle() {
        final Rectangle r1 = new Rectangle(0, 0, 1, 4);
        final Rectangle r2 = new Rectangle(0, 3, 1, 4);
        final Rectangle expected = new Rectangle(0, 3, 1, 1);
        Assert.assertEquals(expected, r1.intersect(r2));
        Assert.assertEquals(expected, r2.intersect(r1));
        Assert.assertFalse(r1.isDisjunctWith(r2));
        Assert.assertFalse(r2.isDisjunctWith(r1));
    }

    @Test
    public void testIntersectNoOverlapYRectangle() {
        final Rectangle r1 = new Rectangle(0, 0, 1, 3);
        final Rectangle r2 = new Rectangle(0, 3, 1, 3);
        Assert.assertNull(r1.intersect(r2));
        Assert.assertNull(r2.intersect(r1));
        Assert.assertTrue(r1.isDisjunctWith(r2));
        Assert.assertTrue(r2.isDisjunctWith(r1));
    }

    @Test
    public void testIntersectOverlapOneRectangle() {
        final Rectangle r1 = new Rectangle(0, 0, 3, 3);
        final Rectangle r2 = new Rectangle(2, 2, 3, 3);
        final Rectangle expected = new Rectangle(2, 2, 1, 1);
        Assert.assertEquals(expected, r1.intersect(r2));
        Assert.assertEquals(expected, r2.intersect(r1));
        Assert.assertFalse(r1.isDisjunctWith(r2));
        Assert.assertFalse(r2.isDisjunctWith(r1));
    }

    @Test
    public void testIntersectNoOverlapRectangle() {
        final Rectangle r1 = new Rectangle(0, 0, 3, 3);
        final Rectangle r2 = new Rectangle(3, 3, 3, 3);
        Assert.assertNull(r1.intersect(r2));
        Assert.assertNull(r2.intersect(r1));
        Assert.assertTrue(r1.isDisjunctWith(r2));
        Assert.assertTrue(r2.isDisjunctWith(r1));
    }

    @Test
    public void testIntersectOverlapOneRectangleWithShift() {
        final Rectangle r1 = new Rectangle(2, 2, 3, 3);
        final Rectangle r2 = new Rectangle(4, 4, 3, 3);
        final Rectangle expected = new Rectangle(4, 4, 1, 1);
        Assert.assertEquals(expected, r1.intersect(r2));
        Assert.assertEquals(expected, r2.intersect(r1));
        Assert.assertFalse(r1.isDisjunctWith(r2));
        Assert.assertFalse(r2.isDisjunctWith(r1));
    }
}