How to assert Errors instead of Exception in phpunit?

Question

In my unit test I want to caught if an ArithmeticError has been thrown, just like for an Exception using the @expectedException tag.

Unfortunally, it seems that phpunit recognize only Exceptions and not Errors.

Anyone know how to test for expected errors, instead excpetions?

Answer 1

Found the solution. Using error_reporting(2); in a TestCase's setUp method ensure phpunit can convert all Errors in Exceptions. I tried various error reporting levels, but only the one above works (see the error reporting levels). In this case was simple to me:

class DivisionTest extends TestCase
{
  public function setUp() : void
  {
    $this->division = new Division;
    error_reporting(2);
  }

  /**
   * When divide by zero (x / 0) should throw an Error.
   * @expectedException DivisionByZeroError
   */
  public function testDivedByZeroThrowException()
  {
    // Act
    $result = $this->division->run(0, 5); // 5 : 0
  }
}

Now this test returns Success!!! For more information visit Testing PHP Errors.