Visualise test run

[haf]

When you have many concurrent tests running with Expecto it's very hard to follow the console output. Commonly each line if prefixed with a number or correlation id, but this has better properties for machine parsing than reading it as a human.

Create a Logger that visualises events:

• Row: a test-case (possibly grouped by test list)
• Dots: a log message
• Columns/horisontal: wall-clock time

Suggested implementation:

• Create a new logger MyLogger ... :> Logger
• Spawn a Suave server, startWebServerAsync ...
• Create an async MailboxProcessor
• Spawn an EventSource in Suave
• For every message the logger gets, place it in the MailboxProcessor
• Suave's WebPart awaits messages in the MailboxProcessor (i.e. they are broadcast to all clients with outstanding requests) – feel free to hang out in the Suave chat too – remember to send heartbeats
• In the JS; update the visualisation on every event received from the server
• For brownie points; after receiving an event, first buffer it in an RxJS stream (bufferWithTime or similar) so that the visualisation only is updated once every half second.

[inosik]

Maybe we could build a logger for TAP? There is a curated list of resources about the protocol at sindresorhus/awesome-tap.

There are also a couple of reporters, for example, one which can generate Markdown or this one, which summarizes the results pretty nicely.

[AnthonyLloyd]

resolved with #258

[haf]

@AnthonyLloyd You mean with a progress bar?

[AnthonyLloyd]

In terms of the console work yes. I'll keep open for the Logger idea.