public function testIfGetNumberOfPointsWorksAsExpected() { $polygon = new Polygon(); $this->assertEquals(0, $polygon->getNumberOfPoints()); $polygon->addPoint(new Coordinate(10, 10)); $this->assertEquals(1, $polygon->getNumberOfPoints()); $polygon->addPoint(new Coordinate(10, 20)); $this->assertEquals(2, $polygon->getNumberOfPoints()); }