mirror of https://github.com/restic/restic.git
109 lines
3.1 KiB
Go
109 lines
3.1 KiB
Go
package repository_test
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import (
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"bytes"
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"context"
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"io"
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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/backend/mock"
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"github.com/restic/restic/internal/cache"
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"github.com/restic/restic/internal/errors"
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"github.com/restic/restic/internal/repository"
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"github.com/restic/restic/internal/restic"
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rtest "github.com/restic/restic/internal/test"
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)
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const KiB = 1 << 10
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const MiB = 1 << 20
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func TestLoadRaw(t *testing.T) {
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b := mem.New()
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repo, err := repository.New(b, repository.Options{})
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rtest.OK(t, err)
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for i := 0; i < 5; i++ {
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data := rtest.Random(23+i, 500*KiB)
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id := restic.Hash(data)
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h := backend.Handle{Name: id.String(), Type: backend.PackFile}
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err := b.Save(context.TODO(), h, backend.NewByteReader(data, b.Hasher()))
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rtest.OK(t, err)
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buf, err := repo.LoadRaw(context.TODO(), backend.PackFile, id)
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rtest.OK(t, err)
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if len(buf) != len(data) {
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t.Errorf("length of returned buffer does not match, want %d, got %d", len(data), len(buf))
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continue
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}
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if !bytes.Equal(buf, data) {
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t.Errorf("wrong data returned")
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continue
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}
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}
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}
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func TestLoadRawBroken(t *testing.T) {
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b := mock.NewBackend()
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repo, err := repository.New(b, repository.Options{})
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rtest.OK(t, err)
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data := rtest.Random(23, 10*KiB)
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id := restic.Hash(data)
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// damage buffer
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data[0] ^= 0xff
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b.OpenReaderFn = func(ctx context.Context, h backend.Handle, length int, offset int64) (io.ReadCloser, error) {
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return io.NopCloser(bytes.NewReader(data)), nil
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}
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// must detect but still return corrupt data
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buf, err := repo.LoadRaw(context.TODO(), backend.PackFile, id)
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rtest.Assert(t, bytes.Equal(buf, data), "wrong data returned")
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rtest.Assert(t, errors.Is(err, restic.ErrInvalidData), "missing expected ErrInvalidData error, got %v", err)
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// cause the first access to fail, but repair the data for the second access
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data[0] ^= 0xff
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loadCtr := 0
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b.OpenReaderFn = func(ctx context.Context, h backend.Handle, length int, offset int64) (io.ReadCloser, error) {
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data[0] ^= 0xff
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loadCtr++
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return io.NopCloser(bytes.NewReader(data)), nil
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}
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// must retry load of corrupted data
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buf, err = repo.LoadRaw(context.TODO(), backend.PackFile, id)
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rtest.OK(t, err)
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rtest.Assert(t, bytes.Equal(buf, data), "wrong data returned")
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rtest.Equals(t, 2, loadCtr, "missing retry on broken data")
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}
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func TestLoadRawBrokenWithCache(t *testing.T) {
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b := mock.NewBackend()
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c := cache.TestNewCache(t)
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repo, err := repository.New(b, repository.Options{})
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rtest.OK(t, err)
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repo.UseCache(c)
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data := rtest.Random(23, 10*KiB)
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id := restic.Hash(data)
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loadCtr := 0
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// cause the first access to fail, but repair the data for the second access
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b.OpenReaderFn = func(ctx context.Context, h backend.Handle, length int, offset int64) (io.ReadCloser, error) {
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data[0] ^= 0xff
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loadCtr++
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return io.NopCloser(bytes.NewReader(data)), nil
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}
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// must retry load of corrupted data
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buf, err := repo.LoadRaw(context.TODO(), backend.SnapshotFile, id)
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rtest.OK(t, err)
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rtest.Assert(t, bytes.Equal(buf, data), "wrong data returned")
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rtest.Equals(t, 2, loadCtr, "missing retry on broken data")
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}
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