restic/internal/repository/fuzz_test.go

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package repository
import (
"context"
"testing"
"github.com/restic/restic/internal/restic"
"golang.org/x/sync/errgroup"
)
// Test saving a blob and loading it again, with varying buffer sizes.
// Also a regression test for #3783.
func FuzzSaveLoadBlob(f *testing.F) {
f.Fuzz(func(t *testing.T, blob []byte, buflen uint) {
if buflen > 64<<20 {
// Don't allocate enormous buffers. We're not testing the allocator.
t.Skip()
}
id := restic.Hash(blob)
repo, _ := TestRepositoryWithVersion(t, 2)
var wg errgroup.Group
repo.StartPackUploader(context.TODO(), &wg)
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_, _, _, err := repo.SaveBlob(context.TODO(), restic.DataBlob, blob, id, false)
if err != nil {
t.Fatal(err)
}
err = repo.Flush(context.TODO())
if err != nil {
t.Fatal(err)
}
buf, err := repo.LoadBlob(context.TODO(), restic.DataBlob, id, make([]byte, buflen))
if err != nil {
t.Fatal(err)
}
if restic.Hash(buf) != id {
t.Fatal("mismatch")
}
})
}