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71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
47 lines
821 B
Go
47 lines
821 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package ipnserver
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import (
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"context"
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"sync"
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"testing"
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)
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func TestWaiterSet(t *testing.T) {
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var s waiterSet
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wantLen := func(want int, when string) {
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t.Helper()
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if got := len(s); got != want {
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t.Errorf("%s: len = %v; want %v", when, got, want)
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}
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}
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wantLen(0, "initial")
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var mu sync.Mutex
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ctx, cancel := context.WithCancel(context.Background())
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ready, cleanup := s.add(&mu, ctx)
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wantLen(1, "after add")
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select {
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case <-ready:
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t.Fatal("should not be ready")
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default:
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}
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s.wakeAll()
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<-ready
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wantLen(1, "after fire")
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cleanup()
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wantLen(0, "after cleanup")
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// And again but on an already-expired ctx.
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cancel()
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ready, cleanup = s.add(&mu, ctx)
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<-ready // shouldn't block
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cleanup()
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wantLen(0, "at end")
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}
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