HTTP errors.
| Class | CodeToMessageTests | _codeToMessagesinverts_responses.RESPONSES | 
| Class | ErrorTests | Tests for how Errorattributes are 
initialized. | 
| Class | PageRedirectTests | Tests for how PageRedirectattributes are initialized. | 
| Class | InfiniteRedirectionTests | Tests for how InfiniteRedirectionattributes are initialized. | 
| Class | RedirectWithNoLocationTests | RedirectWithNoLocationis a subclass ofErrorwhich sets a 
custom message in the constructor. | 
| Class | MissingRenderMethodTests | Tests for how MissingRenderMethodexceptions are initialized and displayed. | 
| Class | MissingTemplateLoaderTests | Tests for how MissingTemplateLoaderexceptions are initialized and displayed. | 
| Class | FlattenerErrorTests | Tests for FlattenerError. | 
| Class | UnsupportedMethodTests | Tests for UnsupportedMethod. |