forked from TrueCloudLab/restic
144 lines
3.8 KiB
Go
144 lines
3.8 KiB
Go
package backend_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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"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/errors"
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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 TestLoadAll(t *testing.T) {
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b := mem.New()
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for i := 0; i < 20; i++ {
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data := rtest.Random(23+i, rand.Intn(MiB)+500*KiB)
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id := restic.Hash(data)
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err := b.Save(context.TODO(), restic.Handle{Name: id.String(), Type: restic.DataFile}, bytes.NewReader(data))
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rtest.OK(t, err)
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buf, err := backend.LoadAll(context.TODO(), b, restic.Handle{Type: restic.DataFile, Name: id.String()})
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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 TestLoadSmallBuffer(t *testing.T) {
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b := mem.New()
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for i := 0; i < 20; i++ {
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data := rtest.Random(23+i, rand.Intn(MiB)+500*KiB)
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id := restic.Hash(data)
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err := b.Save(context.TODO(), restic.Handle{Name: id.String(), Type: restic.DataFile}, bytes.NewReader(data))
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rtest.OK(t, err)
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buf, err := backend.LoadAll(context.TODO(), b, restic.Handle{Type: restic.DataFile, Name: id.String()})
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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 TestLoadLargeBuffer(t *testing.T) {
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b := mem.New()
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for i := 0; i < 20; i++ {
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data := rtest.Random(23+i, rand.Intn(MiB)+500*KiB)
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id := restic.Hash(data)
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err := b.Save(context.TODO(), restic.Handle{Name: id.String(), Type: restic.DataFile}, bytes.NewReader(data))
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rtest.OK(t, err)
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buf, err := backend.LoadAll(context.TODO(), b, restic.Handle{Type: restic.DataFile, Name: id.String()})
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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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type mockReader struct {
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closed bool
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}
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func (rd *mockReader) Read(p []byte) (n int, err error) {
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return 0, nil
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}
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func (rd *mockReader) Close() error {
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rd.closed = true
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return nil
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}
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func TestDefaultLoad(t *testing.T) {
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h := restic.Handle{Name: "id", Type: restic.DataFile}
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rd := &mockReader{}
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// happy case, assert correct parameters are passed around and content stream is closed
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err := backend.DefaultLoad(context.TODO(), h, 10, 11, func(ctx context.Context, ih restic.Handle, length int, offset int64) (io.ReadCloser, error) {
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rtest.Equals(t, h, ih)
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rtest.Equals(t, int(10), length)
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rtest.Equals(t, int64(11), offset)
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return rd, nil
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}, func(ird io.Reader) error {
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rtest.Equals(t, rd, ird)
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return nil
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})
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rtest.OK(t, err)
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rtest.Equals(t, true, rd.closed)
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// unhappy case, assert producer errors are handled correctly
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err = backend.DefaultLoad(context.TODO(), h, 10, 11, func(ctx context.Context, ih restic.Handle, length int, offset int64) (io.ReadCloser, error) {
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return nil, errors.Errorf("producer error")
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}, func(ird io.Reader) error {
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t.Fatalf("unexpected consumer invocation")
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return nil
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})
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rtest.Equals(t, "producer error", err.Error())
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// unhappy case, assert consumer errors are handled correctly
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rd = &mockReader{}
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err = backend.DefaultLoad(context.TODO(), h, 10, 11, func(ctx context.Context, ih restic.Handle, length int, offset int64) (io.ReadCloser, error) {
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return rd, nil
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}, func(ird io.Reader) error {
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return errors.Errorf("consumer error")
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})
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rtest.Equals(t, true, rd.closed)
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rtest.Equals(t, "consumer error", err.Error())
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}
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