$this->fail('->load() throws an InvalidArgumentException if the tag does not exist');
}
catch(\Exception$e)
{
$this->assertInstanceOf('\InvalidArgumentException',$e,'->load() throws an InvalidArgumentException if the tag does not exist');
$this->assertEquals('The tag "foo" is not defined in the "http://www.example.com/schema/project" extension.',$e->getMessage(),'->load() throws an InvalidArgumentException if the tag does not exist');