pim
9e0a98ed07
Validate(root): optional startup/test check for tree authoring faults — >1 slot child per node, empty word, duplicate sibling words, dead-end node — traversing circular slots without looping (#3). keypress subpackage: WaitForKey(ctx, cancel) cancels a context on any keystroke for watch-style streaming commands, with per-GOOS cbreak (linux TCGETS/TCSETS, BSD TIOCGETA/TIOCSETA) and a non-tty/unsupported fallback that just waits on ctx. Lifts the last OpenBSD-specific bit out of evpnc/maglevc's watch.go (#6). docs: replace PROPOSAL.md with an RFC-2119 design.md (FR/NFR for the library). Example now dogfoods Validate (a unit test) and keypress (a bounded `watch` command). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
32 lines
818 B
Go
32 lines
818 B
Go
// SPDX-FileCopyrightText: (C) Copyright 2026 Pim van Pelt <pim@ipng.ch>
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// SPDX-License-Identifier: Apache-2.0
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package keypress
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import (
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"context"
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"testing"
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"time"
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)
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// TestWaitForKeyReturnsOnContextCancel checks WaitForKey unblocks when the
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// context ends, both on the non-tty path (cbreak fails → wait on ctx) and the
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// tty path (select returns on ctx.Done). Under `go test` stdin is normally not
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// a terminal, exercising the former.
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func TestWaitForKeyReturnsOnContextCancel(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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cancel() // already done
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done := make(chan struct{})
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go func() {
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WaitForKey(ctx, func() {})
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close(done)
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}()
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select {
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case <-done:
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case <-time.After(2 * time.Second):
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t.Fatal("WaitForKey did not return after the context was cancelled")
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}
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}
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