mirror of
https://github.com/octoleo/restic.git
synced 2024-11-02 11:46:36 +00:00
147 lines
3.3 KiB
Go
147 lines
3.3 KiB
Go
// +build !openbsd
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// +build !windows
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package fuse
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import (
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"bytes"
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"math/rand"
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"testing"
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"time"
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"golang.org/x/net/context"
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"github.com/restic/restic/internal/repository"
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"bazil.org/fuse"
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"bazil.org/fuse/fs"
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"github.com/restic/restic/internal"
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. "github.com/restic/restic/internal/test"
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)
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func testRead(t testing.TB, f *file, offset, length int, data []byte) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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req := &fuse.ReadRequest{
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Offset: int64(offset),
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Size: length,
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}
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resp := &fuse.ReadResponse{
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Data: data,
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}
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OK(t, f.Read(ctx, req, resp))
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}
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func firstSnapshotID(t testing.TB, repo restic.Repository) (first restic.ID) {
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for id := range repo.List(context.TODO(), restic.SnapshotFile) {
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if first.IsNull() {
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first = id
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}
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}
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return first
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}
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func loadFirstSnapshot(t testing.TB, repo restic.Repository) *restic.Snapshot {
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id := firstSnapshotID(t, repo)
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sn, err := restic.LoadSnapshot(context.TODO(), repo, id)
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OK(t, err)
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return sn
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}
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func loadTree(t testing.TB, repo restic.Repository, id restic.ID) *restic.Tree {
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tree, err := repo.LoadTree(context.TODO(), id)
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OK(t, err)
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return tree
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}
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func TestFuseFile(t *testing.T) {
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repo, cleanup := repository.TestRepository(t)
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defer cleanup()
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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timestamp, err := time.Parse(time.RFC3339, "2017-01-24T10:42:56+01:00")
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OK(t, err)
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restic.TestCreateSnapshot(t, repo, timestamp, 2, 0.1)
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sn := loadFirstSnapshot(t, repo)
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tree := loadTree(t, repo, *sn.Tree)
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var content restic.IDs
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for _, node := range tree.Nodes {
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content = append(content, node.Content...)
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}
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t.Logf("tree loaded, content: %v", content)
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var (
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filesize uint64
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memfile []byte
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)
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for _, id := range content {
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size, err := repo.LookupBlobSize(id, restic.DataBlob)
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OK(t, err)
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filesize += uint64(size)
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buf := restic.NewBlobBuffer(int(size))
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n, err := repo.LoadBlob(context.TODO(), restic.DataBlob, id, buf)
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OK(t, err)
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if uint(n) != size {
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t.Fatalf("not enough bytes read for id %v: want %v, got %v", id.Str(), size, n)
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}
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if uint(len(buf)) != size {
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t.Fatalf("buffer has wrong length for id %v: want %v, got %v", id.Str(), size, len(buf))
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}
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memfile = append(memfile, buf...)
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}
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t.Logf("filesize is %v, memfile has size %v", filesize, len(memfile))
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node := &restic.Node{
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Name: "foo",
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Inode: 23,
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Mode: 0742,
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Size: filesize,
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Content: content,
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}
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root := &Root{
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blobSizeCache: NewBlobSizeCache(context.TODO(), repo.Index()),
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repo: repo,
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}
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t.Logf("blob cache has %d entries", len(root.blobSizeCache.m))
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inode := fs.GenerateDynamicInode(1, "foo")
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f, err := newFile(context.TODO(), root, inode, node)
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OK(t, err)
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attr := fuse.Attr{}
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OK(t, f.Attr(ctx, &attr))
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Equals(t, inode, attr.Inode)
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Equals(t, node.Mode, attr.Mode)
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Equals(t, node.Size, attr.Size)
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Equals(t, (node.Size/uint64(attr.BlockSize))+1, attr.Blocks)
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for i := 0; i < 200; i++ {
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offset := rand.Intn(int(filesize))
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length := rand.Intn(int(filesize)-offset) + 100
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b := memfile[offset : offset+length]
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buf := make([]byte, length)
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testRead(t, f, offset, length, buf)
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if !bytes.Equal(b, buf) {
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t.Errorf("test %d failed, wrong data returned (offset %v, length %v)", i, offset, length)
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}
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}
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OK(t, f.Release(ctx, nil))
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}
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