Vec2 { @Override public String toString() { return this.x + ", " + this.y; } Vec2();  Vec2(double x, double y);  Vec2(Vec2 vector); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString(); float[] toArray(float[] result, int offset); double magnitude(); double magnitudeSquared(); double distanceTo(Vec2 vector); double distanceToSquared(Vec2 vector); Vec2 set(double x, double y); Vec2 set(Vec2 vector); Vec2 swap(Vec2 vector); Vec2 add(Vec2 vector); Vec2 subtract(Vec2 vector); Vec2 multiply(double scalar); Vec2 multiplyByMatrix(Matrix3 matrix); Vec2 divide(double divisor); Vec2 negate(); Vec2 normalize(); double dot(Vec2 vector); Vec2 mix(Vec2 vector, double weight); public double x; public double y; }
@Test public void testToString() throws Exception { Vec2 u = new Vec2(X, Y); String string = u.toString(); assertTrue("x", string.contains(Double.toString(X))); assertTrue("y", string.contains(Double.toString(Y))); }