9d286baedf
Otherwise, go-digest panics (panic: sha256 not available). Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>
78 lines
1.6 KiB
Go
78 lines
1.6 KiB
Go
//go:build gofuzz
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// +build gofuzz
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/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package local
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import (
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"bufio"
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"bytes"
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"context"
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_ "crypto/sha256"
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"io"
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"testing"
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"github.com/opencontainers/go-digest"
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"github.com/containerd/containerd/content"
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)
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func FuzzContentStoreWriter(data []byte) int {
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t := &testing.T{}
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ctx := context.Background()
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ctx, _, cs, cleanup := contentStoreEnv(t)
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defer cleanup()
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cw, err := cs.Writer(ctx, content.WithRef("myref"))
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if err != nil {
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return 0
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}
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if err := cw.Close(); err != nil {
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return 0
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}
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// reopen, so we can test things
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cw, err = cs.Writer(ctx, content.WithRef("myref"))
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if err != nil {
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return 0
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}
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err = checkCopyFuzz(int64(len(data)), cw, bufio.NewReader(io.NopCloser(bytes.NewReader(data))))
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if err != nil {
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return 0
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}
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expected := digest.FromBytes(data)
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if err = cw.Commit(ctx, int64(len(data)), expected); err != nil {
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return 0
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}
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return 1
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}
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func checkCopyFuzz(size int64, dst io.Writer, src io.Reader) error {
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nn, err := io.Copy(dst, src)
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if err != nil {
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return err
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}
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if nn != size {
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return err
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}
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return nil
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}
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