Better way to test constructors - phpunit

This is the test case I have written to test a constructor of class. Is this wrong and is there any other better way ?

/**
 * Set values of an edge
 *
 * @param string|int $point1 starting point of an edge
 * @param string|int $point2 end point of an edge
 * @param int $value of an edge
 */
public function __construct($point1, $point2, $value)
{
    $this->setPoint1($point1);
    $this->setPoint2($point2);
    $this->setValue($value);
}

/**
 * Test for class constructor
 */
public function testConstructor()
{
    $edgeObj = new Edge('x', 'y', 15.25);
    $this->assertEquals('x', $edgeObj->getPoint1());
    $this->assertEquals('y', $edgeObj->getPoint2());
    $this->assertEquals(15.25, $edgeObj->getValue());
}