assertDef('bob@example.com');
        $this->assertDef('  bob@example.com  ', 'bob@example.com');
        $this->assertDef('bob.thebuilder@example.net');
        $this->assertDef('Bob_the_Builder-the-2nd@example.org');
        $this->assertDef('Bob%20the%20Builder@white-space.test');
        // extended format, with real name
        //$this->assertDef('Bob%20Builder%20%3Cbobby.bob.bob@it.is.example.com%3E');
        //$this->assertDef('Bob Builder ');
        // time to fail
        $this->assertDef('bob', false);
        $this->assertDef('bob@home@work', false);
        $this->assertDef('@example.com', false);
        $this->assertDef('bob@', false);
        $this->assertDef('', false);
    }
}
// vim: et sw=4 sts=4