pointtest.java

来自「BOOK:Beginning Algorithms Code Example」· Java 代码 · 共 31 行

package com.wrox.algorithms.geometry;

import junit.framework.TestCase;

/**
 */
public class PointTest extends TestCase {
    public void testEquals() {
        assertEquals(new Point(0, 0), new Point(0, 0));
        assertEquals(new Point(5, 8), new Point(5, 8));
        assertEquals(new Point(-4, 6), new Point(-4, 6));

        assertFalse(new Point(0, 0).equals(new Point(1, 0)));
        assertFalse(new Point(0, 0).equals(new Point(0, 1)));
        assertFalse(new Point(4, 4).equals(new Point(-4, 4)));
        assertFalse(new Point(4, 4).equals(new Point(4, -4)));
        assertFalse(new Point(4, 4).equals(new Point(-4, -4)));
        assertFalse(new Point(-4, 4).equals(new Point(-4, -4)));
    }

    public void testDistance() {
        assertEquals(13d, new Point(0, 0).distance(new Point(0, 13)), 0);
        assertEquals(13d, new Point(0, 0).distance(new Point(13, 0)), 0);
        assertEquals(13d, new Point(0, 0).distance(new Point(0, -13)), 0);
        assertEquals(13d, new Point(0, 0).distance(new Point(-13, 0)), 0);

        assertEquals(5d, new Point(1, 1).distance(new Point(4, 5)), 0);
        assertEquals(5d, new Point(1, 1).distance(new Point(-2, -3)), 0);
    }
}