public function Test_of_validatesNumericalityOf()
{
$Person = new TestPerson();
$Person->validatesNumericalityOf('age');
$this->assertEqual($Person->getErrorsOn('age'), $Person->getDefaultErrorMessageFor('not_a_number'));
$Person->clearErrors();
$Person->age = 'text';
$Person->validatesNumericalityOf('age');
$this->assertEqual($Person->getErrorsOn('age'), $Person->getDefaultErrorMessageFor('not_a_number'));
$Person->clearErrors();
$Person->age = 15.98;
$Person->validatesNumericalityOf('age');
$this->assertFalse($Person->hasErrors());
$Person->clearErrors();
$Person->age = 15.98;
$Person->validatesNumericalityOf('age', 'not_valid', true);
$this->assertEqual($Person->getErrorsOn('age'), 'not_valid');
$Person->clearErrors();
$Person->age = 18;
$Person->validatesNumericalityOf('age');
$this->assertFalse($Person->hasErrors());
$Person->clearErrors();
$Person->age = '18';
$Person->validatesNumericalityOf('age', 'not_valid', true);
$this->assertFalse($Person->hasErrors());
$Person->clearErrors();
unset($Person->age);
$Person->validatesNumericalityOf('age', 'not_valid', false, true);
$this->assertFalse($Person->hasErrors());
$Person->clearErrors();
$Person->age = null;
$Person->validatesNumericalityOf('age', 'not_valid', false, false);
$this->assertTrue($Person->hasErrors());
}
