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Vector2DTest.dart
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Vector2DTest.dart
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vector2DTests() {
group('Constructor', () {
test('Default Values', () {
Vector2D v = new Vector2D();
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Int Values', () {
Vector2D v = new Vector2D(1,2);
Expect.equals(1, v.x);
Expect.equals(2, v.y);
});
test('Double Values', () {
Vector2D v = new Vector2D(1.23456,2.34567);
Expect.equals(1.23456, v.x);
Expect.equals(2.34567, v.y);
});
test('Negative Values', () {
Vector2D v = new Vector2D(-1,-2);
Expect.equals(-1, v.x);
Expect.equals(-2, v.y);
});
test('Named Values', () {
Vector2D v = new Vector2D(y: -1, x: -2);
Expect.equals(-2, v.x);
Expect.equals(-1, v.y);
});
});
group('Read and Write', () {
test('Write', () {
Vector2D v = new Vector2D(0,0);
v.x = 1;
v.y = -1;
Expect.equals(1, v.x);
Expect.equals(-1, v.y);
});
test('Overwrite', () {
Vector2D v = new Vector2D(0,0);
v.x = 1;
v.y = -1;
v.y = v.x;
Expect.equals(1, v.x);
Expect.equals(1, v.y);
});
});
group('Rotate', () {
test('rotate 90 degree', () {
Vector2D v = new Vector2D(0,1);
v.rotate(90);
Expect.equals(-1, v.x);
Expect.equals(0, v.y.toInt());
});
test('rotate -90 degree', () {
Vector2D v = new Vector2D(0,1);
v.rotate(-90);
Expect.equals(1, v.x);
Expect.equals(0, v.y.toInt());
});
test('rotate 450 degree', () {
Vector2D v = new Vector2D(0,1);
v.rotate(450);
Expect.equals(-1, v.x);
Expect.equals(0, v.y.toInt());
});
test('rotate -270 degree', () {
Vector2D v = new Vector2D(0,1);
v.rotate(-270);
Expect.equals(-1, v.x);
Expect.equals(0, v.y.toInt());
});
test('rotate 360 degree', () {
Vector2D v = new Vector2D(0,1);
v.rotate(360);
Expect.equals(0, v.x.toInt());
Expect.equals(1, v.y.toInt());
});
});
group('Normalize', () {
test('Test 1', () {
Vector2D v = new Vector2D(3,4);
v.normalize();
Expect.equals(0.6, v.x);
Expect.equals(0.8, v.y);
});
});
group('Magnitude', () {
test('Test 1', () {
Vector2D v = new Vector2D(5,6);
Expect.equals(Math.sqrt(5*5+6*6), v.magnitude);
});
test('Test 2', () {
Vector2D v = new Vector2D(0,0);
Expect.equals(0, v.magnitude);
});
test('Test 3', () {
Vector2D v = new Vector2D(-5,6);
Expect.equals(Math.sqrt(-5*-5+6*6), v.magnitude);
});
test('Test 4', () {
Vector2D v = new Vector2D(5,-6);
Expect.equals(Math.sqrt(5*5+(-6)*-6), v.magnitude);
});
test('Test 5', () {
Vector2D v = new Vector2D(-5,-6);
Expect.equals(Math.sqrt((-5)*(-5)+(-6)*(-6)), v.magnitude);
});
});
group('Cross', () {
test('Test 1', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(0,0);
Expect.equals(0, v1.cross(v2));
});
test('Test 2', () {
Vector2D v1 = new Vector2D(2,2);
Vector2D v2 = new Vector2D(5,4);
Expect.equals(-2, v1.cross(v2));
});
test('Test 3', () {
Vector2D v1 = new Vector2D(2,2);
Vector2D v2 = new Vector2D(-5,4);
Expect.equals(18, v1.cross(v2));
});
test('Test 4', () {
Vector2D v1 = new Vector2D(-1,2);
Vector2D v2 = new Vector2D(5,4);
Expect.equals(-14, v1.cross(v2));
});
});
group('Negate', () {
test('Test 1', () {
Vector2D v = new Vector2D(3,4);
v = -v;
Expect.equals(-3, v.x);
Expect.equals(-4, v.y);
});
test('Test 2', () {
Vector2D v = new Vector2D(-3,-4);
v = -v;
Expect.equals(3, v.x);
Expect.equals(4, v.y);
});
test('Test 3', () {
Vector2D v = new Vector2D(3,-4);
v = -v;
Expect.equals(-3, v.x);
Expect.equals(4, v.y);
});
test('Test 4', () {
Vector2D v = new Vector2D(-3,4);
v = -v;
Expect.equals(3, v.x);
Expect.equals(-4, v.y);
});
});
group('Scalar Addition', () {
test('Test 1', () {
Vector2D v = new Vector2D(0,0);
v = v + 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 2', () {
Vector2D v = new Vector2D(-4,1);
v = v + 3;
Expect.equals(-1, v.x);
Expect.equals(4, v.y);
});
test('Test 3', () {
Vector2D v = new Vector2D(-1,4);
v = v + -3;
Expect.equals(-4, v.x);
Expect.equals(1, v.y);
});
test('Test 4', () {
Vector2D v = new Vector2D(0,0);
v += 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 5', () {
Vector2D v = new Vector2D(-4,1);
v += 3;
Expect.equals(-1, v.x);
Expect.equals(4, v.y);
});
test('Test 6', () {
Vector2D v = new Vector2D(-1,4);
v += -3;
Expect.equals(-4, v.x);
Expect.equals(1, v.y);
});
});
group('Vector Addition', () {
test('Test 1', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(0,0);
Vector2D v3 = v1 + v2;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(0, v2.x);
Expect.equals(0, v2.y);
Expect.equals(0, v3.x);
Expect.equals(0, v3.y);
});
test('Test 2', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(3,4);
Vector2D v3 = v1 + v2;
Expect.equals(1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(3, v2.x);
Expect.equals(4, v2.y);
Expect.equals(4, v3.x);
Expect.equals(6, v3.y);
});
test('Test 3', () {
Vector2D v1 = new Vector2D(-1,2);
Vector2D v2 = new Vector2D(3,-4);
Vector2D v3 = v1 + v2;
Expect.equals(-1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(3, v2.x);
Expect.equals(-4, v2.y);
Expect.equals(2, v3.x);
Expect.equals(-2, v3.y);
});
test('Test 4', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(-3,4);
Vector2D v3 = v1 + v2;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(-3, v2.x);
Expect.equals(4, v2.y);
Expect.equals(-3, v3.x);
Expect.equals(4, v3.y);
});
test('Test 5', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(0,0);
Vector2D v3 = v1 + v2;
Expect.equals(1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(0, v2.x);
Expect.equals(0, v2.y);
Expect.equals(1, v3.x);
Expect.equals(2, v3.y);
});
test('Test 6', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(3,4);
v1 += v2;
Expect.equals(4, v1.x);
Expect.equals(6, v1.y);
Expect.equals(3, v2.x);
Expect.equals(4, v2.y);
});
test('Test 7', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(3,-4);
v1 += v2;
Expect.equals(3, v1.x);
Expect.equals(-4, v1.y);
Expect.equals(3, v2.x);
Expect.equals(-4, v2.y);
});
});
group('Scalar Subtraction', () {
test('Test 1', () {
Vector2D v = new Vector2D(0,0);
v = v - 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 2', () {
Vector2D v = new Vector2D(2,4);
v = v - 3;
Expect.equals(-1, v.x);
Expect.equals(1, v.y);
});
test('Test 3', () {
Vector2D v = new Vector2D(-4,1);
v = v - -3;
Expect.equals(-1, v.x);
Expect.equals(4, v.y);
});
test('Test 4', () {
Vector2D v = new Vector2D(0,0);
v -= 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 5', () {
Vector2D v = new Vector2D(2,4);
v -= 3;
Expect.equals(-1, v.x);
Expect.equals(1, v.y);
});
test('Test 6', () {
Vector2D v = new Vector2D(-4,1);
v -= -3;
Expect.equals(-1, v.x);
Expect.equals(4, v.y);
});
});
group('Vector Subtraction', () {
test('Test 1', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(0,0);
Vector2D v3 = v1 - v2;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(0, v2.x);
Expect.equals(0, v2.y);
Expect.equals(0, v3.x);
Expect.equals(0, v3.y);
});
test('Test 2', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(3,4);
Vector2D v3 = v1 - v2;
Expect.equals(1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(3, v2.x);
Expect.equals(4, v2.y);
Expect.equals(-2, v3.x);
Expect.equals(-2, v3.y);
});
test('Test 3', () {
Vector2D v1 = new Vector2D(-1,2);
Vector2D v2 = new Vector2D(3,-4);
Vector2D v3 = v1 - v2;
Expect.equals(-1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(3, v2.x);
Expect.equals(-4, v2.y);
Expect.equals(-4, v3.x);
Expect.equals(6, v3.y);
});
test('Test 4', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(-3,4);
Vector2D v3 = v1 - v2;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(-3, v2.x);
Expect.equals(4, v2.y);
Expect.equals(3, v3.x);
Expect.equals(-4, v3.y);
});
test('Test 5', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(0,0);
Vector2D v3 = v1 - v2;
Expect.equals(1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(0, v2.x);
Expect.equals(0, v2.y);
Expect.equals(1, v3.x);
Expect.equals(2, v3.y);
});
test('Test 6', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(3,4);
v1 -= v2;
Expect.equals(-2, v1.x);
Expect.equals(-2, v1.y);
Expect.equals(3, v2.x);
Expect.equals(4, v2.y);
});
test('Test 7', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(3,-4);
v1 -= v2;
Expect.equals(-3, v1.x);
Expect.equals(4, v1.y);
Expect.equals(3, v2.x);
Expect.equals(-4, v2.y);
});
});
group('Scalar Multiplication', () {
test('Test 1', () {
Vector2D v = new Vector2D(0,0);
v = v * 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 2', () {
Vector2D v = new Vector2D(-2,2);
v = v * 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 3', () {
Vector2D v = new Vector2D(-2,2);
v = v * 3;
Expect.equals(-6, v.x);
Expect.equals(6, v.y);
});
test('Test 4', () {
Vector2D v = new Vector2D(-2,2);
v = v * -3;
Expect.equals(6, v.x);
Expect.equals(-6, v.y);
});
test('Test 5', () {
Vector2D v = new Vector2D(0,0);
v *= 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 6', () {
Vector2D v = new Vector2D(-2,2);
v *= 0;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 7', () {
Vector2D v = new Vector2D(-2,2);
v *= 3;
Expect.equals(-6, v.x);
Expect.equals(6, v.y);
});
test('Test 8', () {
Vector2D v = new Vector2D(-2,2);
v *= -3;
Expect.equals(6, v.x);
Expect.equals(-6, v.y);
});
});
group('Vector Multiplication', () {
test('Test 1', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(0,0);
Vector2D v3 = v1 * v2;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(0, v2.x);
Expect.equals(0, v2.y);
Expect.equals(0, v3.x);
Expect.equals(0, v3.y);
});
test('Test 2', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(3,4);
Vector2D v3 = v1 * v2;
Expect.equals(1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(3, v2.x);
Expect.equals(4, v2.y);
Expect.equals(3, v3.x);
Expect.equals(8, v3.y);
});
test('Test 3', () {
Vector2D v1 = new Vector2D(-1,0);
Vector2D v2 = new Vector2D(1,2);
Vector2D v3 = v1 * v2;
Expect.equals(-1, v1.x);
Expect.equals(0, v1.y);
Expect.equals(1, v2.x);
Expect.equals(2, v2.y);
Expect.equals(-1, v3.x);
Expect.equals(0, v3.y);
});
test('Test 4', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(0,0);
v2 *= v1;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(0, v2.x);
Expect.equals(0, v2.y);
});
test('Test 5', () {
Vector2D v1 = new Vector2D(1,2);
Vector2D v2 = new Vector2D(3,4);
v2 *= v1;
Expect.equals(1, v1.x);
Expect.equals(2, v1.y);
Expect.equals(3, v2.x);
Expect.equals(8, v2.y);
});
test('Test 6', () {
Vector2D v1 = new Vector2D(-1,0);
Vector2D v2 = new Vector2D(1,2);
v2 *= v1;
Expect.equals(-1, v1.x);
Expect.equals(0, v1.y);
Expect.equals(-1, v2.x);
Expect.equals(0, v2.y);
});
});
group('Scalar Division', () {
test('Test 1', () {
Vector2D v = new Vector2D(0,0);
v = v / 1;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 2', () {
Vector2D v = new Vector2D(-2,2);
v = v / 1;
Expect.equals(-2, v.x);
Expect.equals(2, v.y);
});
test('Test 3', () {
Vector2D v = new Vector2D(-4,4);
v = v / 2;
Expect.equals(-2, v.x);
Expect.equals(2, v.y);
});
test('Test 4', () {
Vector2D v = new Vector2D(-4,4);
v = v / -2;
Expect.equals(2, v.x);
Expect.equals(-2, v.y);
});
test('Test 5', () {
Vector2D v = new Vector2D(-3,3);
v = v / 2;
Expect.equals(-1.5, v.x);
Expect.equals(1.5, v.y);
});
test('Test 6', () {
Vector2D v = new Vector2D(-3,3);
v = v / -2;
Expect.equals(1.5, v.x);
Expect.equals(-1.5, v.y);
});
test('Test 7', () {
Vector2D v = new Vector2D(0,0);
v /= 1;
Expect.equals(0, v.x);
Expect.equals(0, v.y);
});
test('Test 8', () {
Vector2D v = new Vector2D(-2,2);
v /= 1;
Expect.equals(-2, v.x);
Expect.equals(2, v.y);
});
test('Test 9', () {
Vector2D v = new Vector2D(-4,4);
v /= 2;
Expect.equals(-2, v.x);
Expect.equals(2, v.y);
});
test('Test 10', () {
Vector2D v = new Vector2D(-4,4);
v /= -2;
Expect.equals(2, v.x);
Expect.equals(-2, v.y);
});
test('Test 11', () {
Vector2D v = new Vector2D(-3,3);
v /= 2;
Expect.equals(-1.5, v.x);
Expect.equals(1.5, v.y);
});
test('Test 12', () {
Vector2D v = new Vector2D(-3,3);
v /= -2;
Expect.equals(1.5, v.x);
Expect.equals(-1.5, v.y);
});
});
group('Scalar Division', () {
test('Test 1', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(1,2);
Vector2D v3 = v1 / v2;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(1, v2.x);
Expect.equals(2, v2.y);
Expect.equals(0, v3.x);
Expect.equals(0, v3.y);
});
test('Test 2', () {
Vector2D v1 = new Vector2D(-2,2);
Vector2D v2 = new Vector2D(1,1);
Vector2D v3 = v1 / v2;
Expect.equals(-2, v1.x);
Expect.equals(2, v1.y);
Expect.equals(1, v2.x);
Expect.equals(1, v2.y);
Expect.equals(-2, v3.x);
Expect.equals(2, v3.y);
});
test('Test 3', () {
Vector2D v1 = new Vector2D(-4,4);
Vector2D v2 = new Vector2D(2,2);
Vector2D v3 = v1 / v2;
Expect.equals(-4, v1.x);
Expect.equals(4, v1.y);
Expect.equals(2, v2.x);
Expect.equals(2, v2.y);
Expect.equals(-2, v3.x);
Expect.equals(2, v3.y);
});
test('Test 4', () {
Vector2D v1 = new Vector2D(-4,4);
Vector2D v2 = new Vector2D(-2,-2);
Vector2D v3 = v1 / v2;
Expect.equals(-4, v1.x);
Expect.equals(4, v1.y);
Expect.equals(-2, v2.x);
Expect.equals(-2, v2.y);
Expect.equals(2, v3.x);
Expect.equals(-2, v3.y);
});
test('Test 5', () {
Vector2D v1 = new Vector2D(-3,3);
Vector2D v2 = new Vector2D(2,2);
Vector2D v3 = v1 / v2;
Expect.equals(-3, v1.x);
Expect.equals(3, v1.y);
Expect.equals(2, v2.x);
Expect.equals(2, v2.y);
Expect.equals(-1.5, v3.x);
Expect.equals(1.5, v3.y);
});
test('Test 6', () {
Vector2D v1 = new Vector2D(-3,3);
Vector2D v2 = new Vector2D(-2,-2);
Vector2D v3 = v1 / v2;
Expect.equals(-3, v1.x);
Expect.equals(3, v1.y);
Expect.equals(-2, v2.x);
Expect.equals(-2, v2.y);
Expect.equals(1.5, v3.x);
Expect.equals(-1.5, v3.y);
});
test('Test 7', () {
Vector2D v1 = new Vector2D(0,0);
Vector2D v2 = new Vector2D(1,2);
v1 /= v2;
Expect.equals(0, v1.x);
Expect.equals(0, v1.y);
Expect.equals(1, v2.x);
Expect.equals(2, v2.y);
});
test('Test 8', () {
Vector2D v1 = new Vector2D(-2,2);
Vector2D v2 = new Vector2D(1,1);
v1 /= v2;
Expect.equals(-2, v1.x);
Expect.equals(2, v1.y);
Expect.equals(1, v2.x);
Expect.equals(1, v2.y);
});
test('Test 9', () {
Vector2D v1 = new Vector2D(-4,4);
Vector2D v2 = new Vector2D(2,2);
v1 /= v2;
Expect.equals(-2, v1.x);
Expect.equals(2, v1.y);
Expect.equals(2, v2.x);
Expect.equals(2, v2.y);
});
test('Test 10', () {
Vector2D v1 = new Vector2D(-4,4);
Vector2D v2 = new Vector2D(-2,-2);
v1 /= v2;
Expect.equals(2, v1.x);
Expect.equals(-2, v1.y);
Expect.equals(-2, v2.x);
Expect.equals(-2, v2.y);
});
test('Test 11', () {
Vector2D v1 = new Vector2D(-3,3);
Vector2D v2 = new Vector2D(2,2);
v1 /= v2;
Expect.equals(-1.5, v1.x);
Expect.equals(1.5, v1.y);
Expect.equals(2, v2.x);
Expect.equals(2, v2.y);
});
test('Test 12', () {
Vector2D v1 = new Vector2D(-3,3);
Vector2D v2 = new Vector2D(-2,-2);
v1 /= v2;
Expect.equals(1.5, v1.x);
Expect.equals(-1.5, v1.y);
Expect.equals(-2, v2.x);
Expect.equals(-2, v2.y);
});
});
}