org.evors.core.TestUtils.java Source code

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Here is the source code for org.evors.core.TestUtils.java

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/*
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package org.evors.core;

import java.util.Collection;
import org.apache.commons.math3.geometry.euclidean.twod.Vector2D;
import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import static org.junit.Assert.assertTrue;
import org.junit.Test;

/**
 *
 * @author miles
 */
public class TestUtils {

    public static final double EPS = 1E-4;

    public static Matcher<Vector2D> vEquals(final Vector2D v, final double eps) {
        return new BaseMatcher<Vector2D>() {

            @Override
            public boolean matches(Object item) {
                return ((Vector2D) item).distance(v) < eps;
            }

            @Override
            public void describeTo(Description description) {
                description.appendText("Vector does not equal expected vector " + v.toString());
            }
        };
    }

    public static Matcher<Vector2D> vEquals(double x, double y, final double eps) {
        return vEquals(new Vector2D(x, y), eps);
    }

    public static Matcher<Vector2D> vEquals(double x, double y) {
        return vEquals(new Vector2D(x, y));
    }

    public static Matcher<Vector2D> vEquals(final Vector2D v) {
        return vEquals(v, EPS);
    }

    public static Matcher<Vector2D> vIsIn(final Collection<Vector2D> vc) {
        return new BaseMatcher<Vector2D>() {

            @Override
            public boolean matches(Object item) {
                Vector2D v2 = (Vector2D) item;
                boolean matchFound = false;
                for (Vector2D v : vc) {
                    if (v2.distance(v) < EPS)
                        matchFound = true;
                }
                return matchFound;
            }

            @Override
            public void describeTo(Description description) {
                description.appendText("Vector not found in collection :" + vc.toString());
            }

        };
    }

    public static void assertTwoVector2DsEqual(Vector2D v1, Vector2D v2, boolean assertion) {
        boolean result;
        if (assertion)
            result = v1.distance(v2) < 0.0001;
        else
            result = v1.distance(v2) > 0.0001;
        assertTrue(String.format("Expected: %s, actual: %s", v1.toString(), v2.toString()), result);
    }

    public static void assertTwoVector2DsEqual(float x, float y, Vector2D v2, boolean assertion) {
        assertTwoVector2DsEqual(new Vector2D(x, y), v2, assertion);
    }

    @Test
    public void vectorsShouldBeEqual() {
        Vector2D v1 = new Vector2D(2, 2);
        Vector2D v2 = new Vector2D(2, 2);
        assertTwoVector2DsEqual(v1, v2, true);
    }

    @Test
    public void vectorsShouldntBeEqual() {
        Vector2D v1 = new Vector2D(2, 2);
        Vector2D v2 = new Vector2D(3, 2);
        assertTwoVector2DsEqual(v1, v2, false);
    }

}