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https://github.com/netbirdio/netbird.git
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fd442138e6
Adds file-watching certificate hot reload, cross-replica ACME certificate lock coordination via flock (Unix) and Kubernetes lease objects.
80 lines
1.7 KiB
Go
80 lines
1.7 KiB
Go
//go:build unix
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package flock
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import (
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"context"
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"os"
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"path/filepath"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestLockUnlock(t *testing.T) {
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lockPath := filepath.Join(t.TempDir(), "test.lock")
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f, err := Lock(context.Background(), lockPath)
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require.NoError(t, err)
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require.NotNil(t, f)
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_, err = os.Stat(lockPath)
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assert.NoError(t, err, "lock file should exist")
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err = Unlock(f)
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assert.NoError(t, err)
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}
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func TestUnlockNil(t *testing.T) {
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err := Unlock(nil)
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assert.NoError(t, err, "unlocking nil should be a no-op")
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}
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func TestLockRespectsContext(t *testing.T) {
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lockPath := filepath.Join(t.TempDir(), "test.lock")
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f1, err := Lock(context.Background(), lockPath)
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require.NoError(t, err)
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defer func() { require.NoError(t, Unlock(f1)) }()
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ctx, cancel := context.WithTimeout(context.Background(), 300*time.Millisecond)
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defer cancel()
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_, err = Lock(ctx, lockPath)
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assert.ErrorIs(t, err, context.DeadlineExceeded)
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}
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func TestLockBlocks(t *testing.T) {
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lockPath := filepath.Join(t.TempDir(), "test.lock")
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f1, err := Lock(context.Background(), lockPath)
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require.NoError(t, err)
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var wg sync.WaitGroup
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wg.Add(1)
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start := time.Now()
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var elapsed time.Duration
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go func() {
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defer wg.Done()
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f2, err := Lock(context.Background(), lockPath)
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elapsed = time.Since(start)
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assert.NoError(t, err)
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if f2 != nil {
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assert.NoError(t, Unlock(f2))
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}
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}()
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// Hold the lock for 200ms, then release.
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time.Sleep(200 * time.Millisecond)
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require.NoError(t, Unlock(f1))
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wg.Wait()
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assert.GreaterOrEqual(t, elapsed, 150*time.Millisecond,
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"Lock should have blocked for at least ~200ms")
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}
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