| Class | NullJob | A job that does nothing but append a string to a list. |
| Class | RaisingJobException | Raised by the RaisingJob when run. |
| Class | RaisingJob | A job that raises when it runs. |
| Class | RaisingJobTimelineMessage | A job that records a timeline action and then raises when it runs. |
| Class | RaisingJobUserError | A job that raises a user error when it runs. |
| Class | RaisingJobRaisingNotifyOops | A job that raises when it runs, and when calling notifyOops. |
| Class | RaisingJobRaisingNotifyUserError | A job that raises when it runs, and when notifying user errors. |
| Class | RetryError | Undocumented |
| Class | RaisingRetryJob | Undocumented |
| Class | TestJobRunner | Ensure JobRunner behaves as expected. |
| Class | StaticJobSource | Undocumented |
| Class | StuckJob | Simulation of a job that stalls. |
| Class | ShorterStuckJob | Simulation of a job that stalls. |
| Class | InitialFailureJob | Undocumented |
| Class | ProcessSharingJob | Undocumented |
| Class | MemoryHogJob | Undocumented |
| Class | NoJobs | Undocumented |
| Class | LeaseHeldJob | Undocumented |
| Class | TestTwistedJobRunner | No class docstring; 6/9 methods documented |
| Class | TestCeleryEnabled | No class docstring; 4/4 methods documented |