Explain my failing tests

By Canoryn · v1.0.0 · updated 29 Sept 2026

Runs your test suite in a real terminal and explains each failure: which test, the likely cause, and the smallest fix to try first — grouped when several failures share one cause. Works with swift test, npm test, pytest or any command.

Open in Canoryn Download .cryn

Start

Flow

Tests

RunOn Done

CommandOutput

Wait ForOutcome

Idle (ms)Last Line

Timeout (s)

$ cd ~/path/to/your/project && swift test 2>&1 | tail -n 300

Diagnosis

InDone

PromptResponse

System Instructions

Provider

Report

ComposeReady

MarkdownMarkdown

Test run

— Diagnosis writes this part when the workflow runs —

100%

Template4 nodes3 connectionsDrag to move · pinch or ⌘-scroll to zoom

The template's own canvas, drawn from its saved file. Run preview plays a simulation; the real run happens in Canoryn for macOS (free download), where a template arrives switched off until you press Run.

Before it runs

Your Mac's terminal — commands run only after you press Run
Your model provider — the one you set up in Canoryn, or a local model
Documents on your Mac

It arrives switched off: nothing runs until you open it and press Run.

Inside

Trigger1
Terminal1
AI step1
Document1