mirror of https://github.com/octoleo/restic.git
115 lines
2.3 KiB
Go
115 lines
2.3 KiB
Go
package cache
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import (
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"bytes"
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"context"
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"math/rand"
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"testing"
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"github.com/restic/restic/internal/backend"
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"github.com/restic/restic/internal/backend/mem"
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"github.com/restic/restic/internal/restic"
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"github.com/restic/restic/internal/test"
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)
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func loadAndCompare(t testing.TB, be restic.Backend, h restic.Handle, data []byte) {
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buf, err := backend.LoadAll(context.TODO(), be, h)
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if err != nil {
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t.Fatal(err)
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}
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if len(buf) != len(data) {
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t.Fatalf("wrong number of bytes read, want %v, got %v", len(data), len(buf))
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}
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if !bytes.Equal(buf, data) {
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t.Fatalf("wrong data returned, want:\n %02x\ngot:\n %02x", data[:16], buf[:16])
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}
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}
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func save(t testing.TB, be restic.Backend, h restic.Handle, data []byte) {
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err := be.Save(context.TODO(), h, restic.NewByteReader(data))
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if err != nil {
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t.Fatal(err)
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}
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}
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func remove(t testing.TB, be restic.Backend, h restic.Handle) {
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err := be.Remove(context.TODO(), h)
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if err != nil {
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t.Fatal(err)
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}
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}
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func randomData(n int) (restic.Handle, []byte) {
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data := test.Random(rand.Int(), n)
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id := restic.Hash(data)
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copy(id[:], data)
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h := restic.Handle{
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Type: restic.IndexFile,
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Name: id.String(),
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}
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return h, data
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}
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func TestBackend(t *testing.T) {
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be := mem.New()
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c, cleanup := TestNewCache(t)
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defer cleanup()
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wbe := c.Wrap(be)
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h, data := randomData(5234142)
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// save directly in backend
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save(t, be, h, data)
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if c.Has(h) {
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t.Errorf("cache has file too early")
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}
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// load data via cache
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loadAndCompare(t, wbe, h, data)
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if !c.Has(h) {
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t.Errorf("cache doesn't have file after load")
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}
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// remove via cache
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remove(t, wbe, h)
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if c.Has(h) {
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t.Errorf("cache has file after remove")
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}
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// save via cache
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save(t, wbe, h, data)
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if !c.Has(h) {
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t.Errorf("cache doesn't have file after load")
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}
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// load data directly from backend
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loadAndCompare(t, be, h, data)
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// load data via cache
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loadAndCompare(t, be, h, data)
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// remove directly
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remove(t, be, h)
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if !c.Has(h) {
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t.Errorf("file not in cache any more")
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}
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// run stat
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_, err := wbe.Stat(context.TODO(), h)
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if err == nil {
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t.Errorf("expected error for removed file not found, got nil")
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}
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if !wbe.IsNotExist(err) {
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t.Errorf("Stat() returned error that does not match IsNotExist(): %v", err)
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}
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if c.Has(h) {
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t.Errorf("removed file still in cache after stat")
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}
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}
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