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* less verbose undo test, check roots undone correctly * fuzzing * fuzz in CI
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| //go:build gofuzz | ||
| // +build gofuzz | ||
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||
| package accumulator | ||
|
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||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "reflect" | ||
| ) | ||
|
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| func undoOnceFuzzy(data *bytes.Buffer) error { | ||
| f := NewForest(RamForest, nil, "", 0) | ||
|
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| seed0, err := data.ReadByte(); | ||
| if err != nil { return nil } | ||
| seed1, err := data.ReadByte(); | ||
| if err != nil { return nil } | ||
| seed := (int64(seed1) << 8) | int64(seed0) | ||
| sc := newSimChainWithSeed(0x07, seed) | ||
| if sc == nil { | ||
| return nil | ||
| } | ||
| sc.lookahead = 0 | ||
| for b := int32(0); ; b++ { | ||
| numAdds, err := data.ReadByte() | ||
| if err != nil { | ||
| break | ||
| } | ||
| numAdds &= 0x1f | ||
|
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| adds, durations, delHashes := sc.NextBlock(uint32(numAdds)) | ||
|
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| bp, err := f.ProveBatch(delHashes) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| beforeRoot := f.getRoots() | ||
| ub, err := f.Modify(adds, bp.Targets) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| err = f.PosMapSanity() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| // undo every 3rd block | ||
| if b%3 == 2 { | ||
| err := f.Undo(*ub) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| sc.BackOne(adds, durations, delHashes) | ||
| afterRoot := f.getRoots() | ||
| if !reflect.DeepEqual(beforeRoot, afterRoot) { | ||
| return fmt.Errorf("undo mismatch") | ||
| } | ||
| } | ||
|
|
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| } | ||
| return nil | ||
| } | ||
|
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| func Fuzz(dataBytes []byte) int { | ||
| data := bytes.NewBuffer(dataBytes) | ||
|
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| err := undoOnceFuzzy(data) | ||
| if err != nil { | ||
| panic("failed") | ||
| } | ||
| return 1 | ||
| } |
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