mirror of
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135 lines
3.2 KiB
Go
135 lines
3.2 KiB
Go
//go:build unix
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package nfs
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import (
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"context"
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"fmt"
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"sync"
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"testing"
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"github.com/rclone/rclone/fs"
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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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// Check basic CRUD operations
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func testCacheCRUD(t *testing.T, h *Handler, c Cache, fileName string) {
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// Check reading a non existent handle returns an error
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_, _, err := c.FromHandle([]byte{10})
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assert.Error(t, err)
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// Write a handle
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splitPath := []string{"dir", fileName}
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fh := c.ToHandle(h.billyFS, splitPath)
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assert.True(t, len(fh) > 0)
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// Read the handle back
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newFs, newSplitPath, err := c.FromHandle(fh)
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require.NoError(t, err)
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assert.Equal(t, h.billyFS, newFs)
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assert.Equal(t, splitPath, newSplitPath)
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// Invalidate the handle
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err = c.InvalidateHandle(h.billyFS, fh)
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require.NoError(t, err)
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// Invalidate the handle twice
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err = c.InvalidateHandle(h.billyFS, fh)
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require.NoError(t, err)
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// Check the handle is gone and returning stale handle error
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_, _, err = c.FromHandle(fh)
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require.Error(t, err)
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assert.Equal(t, errStaleHandle, err)
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}
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// Thrash the cache operations in parallel on different files
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func testCacheThrashDifferent(t *testing.T, h *Handler, c Cache) {
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var wg sync.WaitGroup
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for i := 0; i < 100; i++ {
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i := i
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wg.Add(1)
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go func() {
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defer wg.Done()
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testCacheCRUD(t, h, c, fmt.Sprintf("file-%d", i))
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}()
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}
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wg.Wait()
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}
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// Thrash the cache operations in parallel on the same file
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func testCacheThrashSame(t *testing.T, h *Handler, c Cache) {
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var wg sync.WaitGroup
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for i := 0; i < 100; i++ {
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wg.Add(1)
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go func() {
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defer wg.Done()
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// Write a handle
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splitPath := []string{"file"}
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fh := c.ToHandle(h.billyFS, splitPath)
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assert.True(t, len(fh) > 0)
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// Read the handle back
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newFs, newSplitPath, err := c.FromHandle(fh)
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if err != nil {
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assert.Equal(t, errStaleHandle, err)
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} else {
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require.NoError(t, err)
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assert.Equal(t, h.billyFS, newFs)
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assert.Equal(t, splitPath, newSplitPath)
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}
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// Invalidate the handle
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err = c.InvalidateHandle(h.billyFS, fh)
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require.NoError(t, err)
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// Check the handle is gone and returning stale handle error
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_, _, err = c.FromHandle(fh)
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if err != nil {
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require.Error(t, err)
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assert.Equal(t, errStaleHandle, err)
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}
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}()
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}
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wg.Wait()
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}
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func TestCache(t *testing.T) {
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// Quieten the flood of ERROR messages!
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ci := fs.GetConfig(context.Background())
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oldLogLevel := ci.LogLevel
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ci.LogLevel = fs.LogLevelEmergency
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defer func() {
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ci.LogLevel = oldLogLevel
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}()
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billyFS := &FS{nil} // place holder billyFS
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for _, cacheType := range []handleCache{cacheMemory, cacheDisk} {
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cacheType := cacheType
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t.Run(cacheType.String(), func(t *testing.T) {
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h := &Handler{
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billyFS: billyFS,
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}
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h.opt.HandleLimit = 1000
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h.opt.HandleCache = cacheType
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h.opt.HandleCacheDir = t.TempDir()
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c, err := h.getCache()
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require.NoError(t, err)
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t.Run("CRUD", func(t *testing.T) {
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testCacheCRUD(t, h, c, "file")
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})
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// NB the default caching handler is not thread safe!
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if cacheType != cacheMemory {
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t.Run("ThrashDifferent", func(t *testing.T) {
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testCacheThrashDifferent(t, h, c)
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})
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t.Run("ThrashSame", func(t *testing.T) {
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testCacheThrashSame(t, h, c)
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})
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}
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})
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}
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}
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