/**
 * Tests for the 'math/point.js' file.
 */
/** @module tests/math */
// Do not warn if these variables were not defined before.
/* global QUnit */
QUnit.module("point");

/**
 * Tests for {@link dwv.math.Point2D}.
 * @function module:tests/math~Point2D
 */
QUnit.test("Test Point2D.", function (assert) {
    var p0 = new dwv.math.Point2D(1,2);
    // getX
    assert.equal(p0.getX(), 1, "getX");
    // getY
    assert.equal(p0.getY(), 2, "getY");
    // can't modify internal x
    p0.x = 3;
    assert.equal(p0.getX(), 1, "getX after .x");
    // can't modify internal y
    p0.y = 3;
    assert.equal(p0.getY(), 2, "getY after .y");
    // equals: true
    var p1 = new dwv.math.Point2D(1,2);
    assert.equal(p0.equals(p1), true, "equals true");
    // equals: false
    assert.equal(p0.equals(null), false, "null equals false");
    var p2 = new dwv.math.Point2D(2,1);
    assert.equal(p0.equals(p2), false, "equals false");
    // to string
    assert.equal(p0.toString(), "(1, 2)", "toString");

    // distance
    var p30 = new dwv.math.Point2D(1,3);
    assert.equal(p0.getDistance(p30), 1, "getDistance #1");
    var p31 = new dwv.math.Point2D(2,2);
    assert.equal(p0.getDistance(p31), 1, "getDistance #2");
    var p32 = new dwv.math.Point2D(2,1);
    assert.equal(p0.getDistance(p32), Math.sqrt(2), "getDistance #3");
    var p33 = new dwv.math.Point2D(0,1);
    assert.equal(p0.getDistance(p33), Math.sqrt(2), "getDistance #4");

});

/**
 * Tests for {@link dwv.math.FastPoint2D}.
 * @function module:tests/math~FastPoint2D
 */
QUnit.test("Test FastPoint2D.", function (assert) {
    var p0 = new dwv.math.FastPoint2D(1,2);
    // x
    assert.equal(p0.x, 1, "x");
    // y
    assert.equal(p0.y, 2, "y");
    // can modify x
    p0.x = 3;
    assert.equal(p0.x, 3, "modified x");
    // can modify y
    p0.y = 4;
    assert.equal(p0.y, 4, "modified y");
    // equals: true
    var p1 = new dwv.math.FastPoint2D(3,4);
    assert.equal(p0.equals(p1), true, "equals true");
    // equals: false
    assert.equal(p0.equals(null), false, "null equals false");
    var p2 = new dwv.math.FastPoint2D(4,3);
    assert.equal(p0.equals(p2), false, "equals false");
    // to string
    assert.equal(p0.toString(), "(3, 4)", "toString");
});

/**
 * Tests for {@link dwv.math.Point3D}.
 * @function module:tests/math~Point3D
 */
QUnit.test("Test Point3D.", function (assert) {
    var p0 = new dwv.math.Point3D(1,2,3);
    // getX
    assert.equal(p0.getX(), 1, "getX");
    // getY
    assert.equal(p0.getY(), 2, "getY");
    // getZ
    assert.equal(p0.getZ(), 3, "getZ");
    // can't modify internal x
    p0.x = 3;
    assert.equal(p0.getX(), 1, "getX after .x");
    // can't modify internal y
    p0.y = 3;
    assert.equal(p0.getY(), 2, "getY after .y");
    // can't modify internal z
    p0.z = 3;
    assert.equal(p0.getZ(), 3, "getZ after .z");
    // equals: true
    var p1 = new dwv.math.Point3D(1,2,3);
    assert.equal(p0.equals(p1), true, "equals true");
    // equals: false
    assert.equal(p0.equals(null), false, "null equals false");
    var p2 = new dwv.math.Point3D(3,2,1);
    assert.equal(p0.equals(p2), false, "equals false");
    // to string
    assert.equal(p0.toString(), "(1, 2, 3)", "toString");

    // distance
    var p30 = new dwv.math.Point3D(1,2,4);
    assert.equal(p0.getDistance(p30), 1, "getDistance #1");
    var p31= new dwv.math.Point3D(2,2,3);
    assert.equal(p0.getDistance(p31), 1, "getDistance #2");
    var p32 = new dwv.math.Point3D(2,1,3);
    assert.equal(p0.getDistance(p32), Math.sqrt(2), "getDistance #3");
    var p33 = new dwv.math.Point3D(0,1,3);
    assert.equal(p0.getDistance(p33), Math.sqrt(2), "getDistance #4");
});

/**
 * Tests for {@link dwv.math.Index3D}.
 * @function module:tests/math~Index3D
 */
QUnit.test("Test Index3D.", function (assert) {
    var i0 = new dwv.math.Index3D(1,2,3);
    // getX
    assert.equal(i0.getI(), 1, "getI");
    // getY
    assert.equal(i0.getJ(), 2, "getJ");
    // getZ
    assert.equal(i0.getK(), 3, "getK");
    // can't modify internal i
    i0.i = 3;
    assert.equal(i0.getI(), 1, "getI after .i");
    // can't modify internal j
    i0.j = 3;
    assert.equal(i0.getJ(), 2, "getJ after .j");
    // can't modify internal k
    i0.k = 3;
    assert.equal(i0.getK(), 3, "getK after .k");
    // equals: true
    var i1 = new dwv.math.Index3D(1,2,3);
    assert.equal(i0.equals(i1), true, "equals true");
    // equals: false
    assert.equal(i0.equals(null), false, "null equals false");
    var i2 = new dwv.math.Index3D(3,2,1);
    assert.equal(i0.equals(i2), false, "equals false");
    // to string
    assert.equal(i0.toString(), "(1, 2, 3)", "toString");
});