/**
* Test AddClass::add() with data that should throw an exception.
*
* This method is similar to testAddWithDataProvider(), but the data
* provider gives us data that should throw an exception.
*
* This test uses the '@expectedException' annotation to tell PHPUnit that
* a thrown exception should pass the test. You specify a
* fully-qualified exception class name. If you specify \Exception, PHPUnit
* will pass any exception, whereas a more specific subclass of \Exception
* will require that exception type to be thrown.
*
* Alternately, you can use try and catch blocks with assertions in order
* to test exceptions. We won't demonstrate that here; it's a much better
* idea to test your exceptions with @expectedException.
*
* @dataProvider addBadDataProvider
* @expectedException \InvalidArgumentException
*
* @see AddClassTest::addBadDataProvider()
*/
public function testAddWithBadDataProvider($a, $b)
{
$sut = new AddClass();
$sut->add($a, $b);
}
/**
* A simple addition method with validity checking.
*
* @param numeric $a
* A number to add.
* @param numeric $b
* Another number to add.
*
* @return numeric
* The sum of $a and $b.
*
* @throws \InvalidArgumentException
* If either $a or $b is non-numeric, we can't add, so we throw.
*/
private function privateAdd($a, $b)
{
$adder = new AddClass();
return $adder->add($a, $b);
}
