How do I test for multiple exceptions with PHPUnit?

When testing for exceptions with PHPUnit, what is the best way to require that every statement or assertion must throw an exception in order for the test to pass?

I basically want to do something like this:

public function testExceptions()
{

    $this->setExpectedException('Exception');

    foo(-1); //throws exception
    foo(1); //does not throw exception

}

//Test will fail because foo(1) did not throw an exception

I've come up with the following, which does the job, but is quite ugly IMO.

public function testExceptions()
{

    try {
        foo(-1);
    } catch (Exception $e) {
        $hit = true;
    }

    if (!isset($hit))
        $this->fail('No exception thrown');

    unset($hit);

    try {
        foo(1);
    } catch (Exception $e) {
        $hit = true;
    }

    if (!isset($hit))
        $this->fail('No exception thrown');

    unset($hit);

}