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c9557b2822
When given a buf that is big enough for a compressed blob but not its decompressed contents, the copy at the end of LoadBlob would skip the last part of the contents. Fixes #3783.
44 lines
959 B
Go
44 lines
959 B
Go
//go:build go1.18
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// +build go1.18
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package repository
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import (
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"context"
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"testing"
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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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)
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// Test saving a blob and loading it again, with varying buffer sizes.
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// Also a regression test for #3783.
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func FuzzSaveLoadBlob(f *testing.F) {
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f.Fuzz(func(t *testing.T, blob []byte, buflen uint) {
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if buflen > 64<<20 {
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// Don't allocate enormous buffers. We're not testing the allocator.
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t.Skip()
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}
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id := restic.Hash(blob)
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repo, _ := TestRepositoryWithBackend(t, mem.New(), 2)
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_, _, err := repo.SaveBlob(context.TODO(), restic.DataBlob, blob, id, false)
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if err != nil {
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t.Fatal(err)
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}
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err = repo.Flush(context.TODO())
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if err != nil {
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t.Fatal(err)
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}
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buf, err := repo.LoadBlob(context.TODO(), restic.DataBlob, id, make([]byte, buflen))
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if err != nil {
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t.Fatal(err)
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}
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if restic.Hash(buf) != id {
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t.Fatal("mismatch")
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}
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})
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}
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