@Test
public void extendedConstructorTest_ComponentsMatchGivenComponents_IllegalYComponent() {
Vector v = new Vector(5, Double.NaN);
assertTrue(Util.fuzzyEquals(v._X(), 5));
assertFalse(Util.fuzzyEquals(v._Y(), 6));
assertTrue(Util.fuzzyEquals(v._Y(), 0));
}
@Test
public void getSumTest_PerfectParameters() {
Vector v = new Vector(15, 5);
Vector sumVector = testVector1.getSum(testVector2);
assertTrue(Util.fuzzyEquals(sumVector._X(), v._X()));
assertTrue(Util.fuzzyEquals(sumVector._Y(), v._Y()));
}
@Test
public void GetUnitVectorInSameDirectionTest_LegalCase() {
Vector v = new Vector(Math.sqrt(2) / 2, Math.sqrt(2) / 2);
Vector result = testVector1.getUnitVectorInDirection();
assertTrue(Util.fuzzyEquals(v._X(), result._X()));
assertTrue(Util.fuzzyEquals(v._Y(), result._Y()));
}
@Test
public void getDifferenceTest_PerfectParameters() {
Vector v = new Vector(5, 15);
Vector differenceVector = testVector1.getDifference(testVector2);
assertTrue(Util.fuzzyEquals(differenceVector._X(), v._X()));
assertTrue(Util.fuzzyEquals(differenceVector._Y(), v._Y()));
}
/**
* Sets the angle of this direction to the given angle.
*
* @param angle The new angle for this direction.
* @pre The given angle is not null. | angle != null
* @post If this direction can have the given angle as its angle, then the angle of this direction
* is now equal to the given angle. | new.getAngle() == angle
* @post The magnitude of this new direction is equal to one. | Util.fuzzyEquals(getMagnitude(),
* 1.0)
* @post The angle of this direction is a valid angle. | canHaveAsAngle(getAngle())
*/
@Basic
@Raw
public void setAngle(Angle angle) {
assert (canHaveAsAngle(angle));
this.angle = angle;
assert (getAngle().equals(angle));
assert (Util.fuzzyEquals(getMagnitude(), 1.0));
assert (canHaveAsAngle(getAngle()));
}
/**
* Initializes this new direction with a default angle.
*
* @post The magnitude of this new direction is equal to one. | Util.fuzzyEquals(getMagnitude(),
* 1.0)
* @post The angle of this direction is a valid angle. | canHaveAsAngle(getAngle())
*/
public Direction() {
this(new Angle());
assert (Util.fuzzyEquals(getMagnitude(), 1.0));
assert (canHaveAsAngle(getAngle()));
}
/**
* Initializes this new direction with a given angle.
*
* @param angle The given angle.
* @pre The given angle is not null. | angle != null
* @post The magnitude of this new direction is equal to one. | Util.fuzzyEquals(getMagnitude(),
* 1.0)
* @post The angle of this direction is a valid angle. | canHaveAsAngle(getAngle())
*/
public Direction(Angle angle) {
assert (angle != null);
setAngle(angle);
assert (Util.fuzzyEquals(getMagnitude(), 1.0));
assert (canHaveAsAngle(getAngle()));
}
/**
* Rotates this direction by the given angle.
*
* @pre The given angle is not null. | angle != null
* @param angle The given angle.
* @post The magnitude of this new direction is equal to one. | Util.fuzzyEquals(getMagnitude(),
* 1.0)
* @post The angle of this direction is a valid angle. | canHaveAsAngle(getAngle())
*/
public void rotate(Angle angle) {
assert (angle != null);
getAngle().add(angle);
assert (Util.fuzzyEquals(getMagnitude(), 1.0));
assert (canHaveAsAngle(getAngle()));
}
@Test
public void setYComponentTest_IllegalCase() {
testVector1.setY(Double.NaN);
assertFalse(Util.fuzzyEquals(testVector1._Y(), Double.NaN));
}
@Test
public void setYComponentTest_LegalCase() {
testVector1.setY(5);
assertTrue(Util.fuzzyEquals(testVector1._Y(), 5));
}
@Test
public void simpleConstructorTest_ComponentsMatchZero() {
Vector v = new Vector();
assertTrue(Util.fuzzyEquals(v._X(), 0));
assertTrue(Util.fuzzyEquals(v._Y(), 0));
}
@Test
public void byVectorConstructorTest_ComponentsMatchGivenVectorsComponents_PerfectParameters() {
Vector v = new Vector(testVector1);
assertTrue(Util.fuzzyEquals(v._X(), testVector1._X()));
assertTrue(Util.fuzzyEquals(v._Y(), testVector1._Y()));
}
@Test
public void extendedConstructorTest_ComponentsMatchGivenComponents_PerfectParameters() {
Vector v = new Vector(5, 6);
assertTrue(Util.fuzzyEquals(v._X(), 5));
assertTrue(Util.fuzzyEquals(v._Y(), 6));
}
@Test
public void distanceToTest_PerfectParameters() {
double result = testVector1.getDistanceTo(testVector2);
assertTrue(Util.fuzzyEquals(result, 15.811388300841896));
}
@Test
public void magnitudeTest() {
double vectorMagnitude = testVector1.getMagnitude();
assertTrue(Util.fuzzyEquals(vectorMagnitude, Math.sqrt(200.0)));
}
@Test
public void dotTest_PerfectParameters() {
double vectorProduct = testVector1.dotProduct(testVector2);
assertTrue(Util.fuzzyEquals(vectorProduct, 0));
}
@Test
public void scaleByTest_PerfectParameters() {
Vector scaleVector = testVector1.getScaledBy(2.0);
assertTrue(Util.fuzzyEquals(scaleVector._X(), 20.0));
assertTrue(Util.fuzzyEquals(scaleVector._Y(), 20.0));
}
