Testing Exceptions

NOTE

In namespaced context the Exception class needs to be prefixed with global prefix operator. If you get a failure message when trying to use an InvalidArgumentException, add a slash before the exception to make sure you are using the exception from the global namespace: \InvalidArgumentException

Testing Exceptions

PHPUnit Exception Documentation

Tips

1. Excepted exceptions are written BEFORE the code expected to throw the exception.
2. If you're having problems with InvalidArgumentException you can try calling the base implementation of that exception by using the global namespace (a \ before the exception). \InvalidArgumentException

Example:

/** @test */
function addIngredientMustReceiveValidAmount()
{
    $this->expectException(\InvalidArgumentException::class);
    $recipe = new Recipe();
    $recipe->addIngredient("garlic", "two");
}