105 lines
2.1 KiB
Go
105 lines
2.1 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package webdavfs
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import (
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"io/fs"
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"os"
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"path/filepath"
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"testing"
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"time"
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"tailscale.com/tailfs/tailfsimpl/shared"
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"tailscale.com/tstest"
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)
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func TestStatCache(t *testing.T) {
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// Make sure we don't leak goroutines
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tstest.ResourceCheck(t)
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dir, err := os.MkdirTemp("", "")
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if err != nil {
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t.Fatal(err)
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}
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// create file of size 1
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filename := filepath.Join(dir, "thefile")
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err = os.WriteFile(filename, []byte("1"), 0644)
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if err != nil {
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t.Fatal(err)
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}
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stat := func(name string) (os.FileInfo, error) {
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return os.Stat(name)
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}
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ttl := 1 * time.Second
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c := newStatCache(ttl)
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// fetch new stat
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fi, err := c.getOrFetch(filename, stat)
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if err != nil {
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t.Fatal(err)
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}
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if fi.Size() != 1 {
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t.Errorf("got size %d, want 1", fi.Size())
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}
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// save original FileInfo as a StaticFileInfo so we can reuse it later
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// without worrying about the underlying FileInfo changing.
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originalFI := &shared.StaticFileInfo{
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Named: fi.Name(),
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Sized: fi.Size(),
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Moded: fi.Mode(),
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ModdedTime: fi.ModTime(),
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Dir: fi.IsDir(),
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}
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// update file to size 2
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err = os.WriteFile(filename, []byte("12"), 0644)
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if err != nil {
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t.Fatal(err)
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}
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// fetch stat again, should still be cached
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fi, err = c.getOrFetch(filename, stat)
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if err != nil {
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t.Fatal(err)
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}
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if fi.Size() != 1 {
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t.Errorf("got size %d, want 1", fi.Size())
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}
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// wait for cache to expire and refetch stat, size should reflect new size
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time.Sleep(ttl * 2)
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fi, err = c.getOrFetch(filename, stat)
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if err != nil {
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t.Fatal(err)
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}
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if fi.Size() != 2 {
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t.Errorf("got size %d, want 2", fi.Size())
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}
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// explicitly set the original FileInfo and make sure it's returned
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c.set(dir, []fs.FileInfo{originalFI})
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fi, err = c.getOrFetch(filename, stat)
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if err != nil {
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t.Fatal(err)
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}
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if fi.Size() != 1 {
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t.Errorf("got size %d, want 1", fi.Size())
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}
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// invalidate the cache and make sure the new size is returned
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c.invalidate()
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fi, err = c.getOrFetch(filename, stat)
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if err != nil {
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t.Fatal(err)
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}
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if fi.Size() != 2 {
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t.Errorf("got size %d, want 2", fi.Size())
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}
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c.stop()
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}
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