86 lines
3.0 KiB
Java
86 lines
3.0 KiB
Java
import Vector.Vector;
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import Vector.Line;
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import org.junit.jupiter.api.Test;
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import java.util.ArrayList;
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import java.util.Random;
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import static java.lang.Math.abs;
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import static org.junit.jupiter.api.Assertions.*;
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class LineTest{
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public void assertFloatEquals(float expected, float actual){
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assertFloatEquals(expected, actual, (float)0.0001);
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}
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public void assertFloatEquals(float expected, float actual, float range){
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assertTrue(abs(expected-actual) < range);
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}
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@Test
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public void P2PLine(){
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Vector v1 = new Vector(10, 0);
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Vector v2 = new Vector(10, 10);
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Line line = new Line(v1, v2);
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// make sure the line is pointing in the right direction
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Vector lineDirection = v2.sub(v1);
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assertFloatEquals(lineDirection.angleDiff(line.getDirection()), 0);
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// make sure the line is the correct length
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assertFloatEquals(lineDirection.mag(), line.getLength());
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// make sure the line is starting in the correct place
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assertFloatEquals(v1.x, line.getPosition().x);
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assertFloatEquals(v1.y, line.getPosition().y);
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// make sure the line ends in the correct place
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assertFloatEquals(v2.x, line.endPoint().x);
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assertFloatEquals(v2.y, line.endPoint().y);
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Random rand = new Random();
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// repeat this test with 100 random lines
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for(int i = 0; i < 100; i++){
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v1 = new Vector(rand.nextInt(1001), rand.nextInt(1001));
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v2 = new Vector(rand.nextInt(1001), rand.nextInt(1001));
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line = new Line(v1, v2);
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// make sure the line is pointing in the right direction
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lineDirection = v2.sub(v1);
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float angleDiff = lineDirection.angleDiff(line.getDirection());
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assertFloatEquals(0, angleDiff, 0.001f);
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// make sure the line is the correct length
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assertFloatEquals(lineDirection.mag(), line.getLength());
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// make sure the line is starting in the correct place
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assertFloatEquals(v1.x, line.getPosition().x);
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assertFloatEquals(v1.y, line.getPosition().y);
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// make sure the line ends in the correct place
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assertFloatEquals(v2.x, line.endPoint().x);
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assertFloatEquals(v2.y, line.endPoint().y);
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}
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}
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@Test
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public void bestFitLine(){
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Vector v1 = new Vector(10, 0);
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Vector v2 = new Vector(10, 10);
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ArrayList<Vector> points = new ArrayList<>();
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points.add(v1);
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points.add(v2);
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Line line = new Line(points);
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// make sure the line is pointing in the right direction
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Vector lineDirection = v2.sub(v1);
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assertFloatEquals(lineDirection.angleDiff(line.getDirection()), 0);
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// make sure the line is the correct length
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assertFloatEquals(lineDirection.mag(), line.getLength());
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// make sure the line is starting in the correct place
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assertFloatEquals(v1.x, line.getPosition().x);
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assertFloatEquals(v1.y, line.getPosition().y);
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}
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} |