wehub-resource-sync
1.4 KiB
effects-probe
The minimal effects dogfood: a native-rendered app whose Start button spawns a long-running shell stream through fx.spawn, streams each stdout line into the list as a typed Msg, and whose Cancel button kills the process mid-stream through fx.cancel.
This is the standing proof for the effect system's live path: worker thread → bounded completion queue → wake_fn → loop-thread drain → update → rebuild.
The stream command is platform-conditional: /bin/sh paces one line every 200ms on POSIX; Windows builds use cmd /c for /L paced by ping -n 2 127.0.0.1 (~1 line/s), which also works under Wine — .github/scripts/windows-effects-smoke.sh cross-compiles this app for x86_64-windows-gnu and proves the spawn/stream/wake/cancel path against the automation snapshot there.
Run
native dev
Verify through the automation harness
native build -Dautomation=true
./zig-out/bin/effects-probe &
native automate wait
# click Start (find the id in snapshot.txt), watch "stream line N" grow,
# click Cancel, verify the count stops and the status shows "cancelled".
Test
native test -Dplatform=null
The tests drive the same update through the fake effect executor: spawn requests are asserted on (argv, key), synthetic lines and exits are fed back as dispatched Msgs, and cancel semantics are proven without running a process.