mirror of
https://github.com/go-gitea/gitea
synced 2024-12-18 18:55:38 +01:00
383 lines
10 KiB
Go
383 lines
10 KiB
Go
// +build gofuzz
|
|
|
|
/*
|
|
# Instructions for smat testing for roaring
|
|
|
|
[smat](https://github.com/mschoch/smat) is a framework that provides
|
|
state machine assisted fuzz testing.
|
|
|
|
To run the smat tests for roaring...
|
|
|
|
## Prerequisites
|
|
|
|
$ go get github.com/dvyukov/go-fuzz/go-fuzz
|
|
$ go get github.com/dvyukov/go-fuzz/go-fuzz-build
|
|
|
|
## Steps
|
|
|
|
1. Generate initial smat corpus:
|
|
```
|
|
go test -tags=gofuzz -run=TestGenerateSmatCorpus
|
|
```
|
|
|
|
2. Build go-fuzz test program with instrumentation:
|
|
```
|
|
go-fuzz-build -func FuzzSmat github.com/RoaringBitmap/roaring
|
|
```
|
|
|
|
3. Run go-fuzz:
|
|
```
|
|
go-fuzz -bin=./roaring-fuzz.zip -workdir=workdir/ -timeout=200
|
|
```
|
|
|
|
You should see output like...
|
|
```
|
|
2016/09/16 13:58:35 slaves: 8, corpus: 1 (3s ago), crashers: 0, restarts: 1/0, execs: 0 (0/sec), cover: 0, uptime: 3s
|
|
2016/09/16 13:58:38 slaves: 8, corpus: 1 (6s ago), crashers: 0, restarts: 1/0, execs: 0 (0/sec), cover: 0, uptime: 6s
|
|
2016/09/16 13:58:41 slaves: 8, corpus: 1 (9s ago), crashers: 0, restarts: 1/44, execs: 44 (5/sec), cover: 0, uptime: 9s
|
|
2016/09/16 13:58:44 slaves: 8, corpus: 1 (12s ago), crashers: 0, restarts: 1/45, execs: 45 (4/sec), cover: 0, uptime: 12s
|
|
2016/09/16 13:58:47 slaves: 8, corpus: 1 (15s ago), crashers: 0, restarts: 1/46, execs: 46 (3/sec), cover: 0, uptime: 15s
|
|
2016/09/16 13:58:50 slaves: 8, corpus: 1 (18s ago), crashers: 0, restarts: 1/47, execs: 47 (3/sec), cover: 0, uptime: 18s
|
|
2016/09/16 13:58:53 slaves: 8, corpus: 1 (21s ago), crashers: 0, restarts: 1/63, execs: 63 (3/sec), cover: 0, uptime: 21s
|
|
2016/09/16 13:58:56 slaves: 8, corpus: 1 (24s ago), crashers: 0, restarts: 1/65, execs: 65 (3/sec), cover: 0, uptime: 24s
|
|
2016/09/16 13:58:59 slaves: 8, corpus: 1 (27s ago), crashers: 0, restarts: 1/66, execs: 66 (2/sec), cover: 0, uptime: 27s
|
|
2016/09/16 13:59:02 slaves: 8, corpus: 1 (30s ago), crashers: 0, restarts: 1/67, execs: 67 (2/sec), cover: 0, uptime: 30s
|
|
2016/09/16 13:59:05 slaves: 8, corpus: 1 (33s ago), crashers: 0, restarts: 1/83, execs: 83 (3/sec), cover: 0, uptime: 33s
|
|
2016/09/16 13:59:08 slaves: 8, corpus: 1 (36s ago), crashers: 0, restarts: 1/84, execs: 84 (2/sec), cover: 0, uptime: 36s
|
|
2016/09/16 13:59:11 slaves: 8, corpus: 2 (0s ago), crashers: 0, restarts: 1/85, execs: 85 (2/sec), cover: 0, uptime: 39s
|
|
2016/09/16 13:59:14 slaves: 8, corpus: 17 (2s ago), crashers: 0, restarts: 1/86, execs: 86 (2/sec), cover: 480, uptime: 42s
|
|
2016/09/16 13:59:17 slaves: 8, corpus: 17 (5s ago), crashers: 0, restarts: 1/66, execs: 132 (3/sec), cover: 487, uptime: 45s
|
|
2016/09/16 13:59:20 slaves: 8, corpus: 17 (8s ago), crashers: 0, restarts: 1/440, execs: 2645 (55/sec), cover: 487, uptime: 48s
|
|
|
|
```
|
|
|
|
Let it run, and if the # of crashers is > 0, check out the reports in
|
|
the workdir where you should be able to find the panic goroutine stack
|
|
traces.
|
|
*/
|
|
|
|
package roaring
|
|
|
|
import (
|
|
"fmt"
|
|
"sort"
|
|
|
|
"github.com/mschoch/smat"
|
|
"github.com/willf/bitset"
|
|
)
|
|
|
|
// fuzz test using state machine driven by byte stream.
|
|
func FuzzSmat(data []byte) int {
|
|
return smat.Fuzz(&smatContext{}, smat.ActionID('S'), smat.ActionID('T'),
|
|
smatActionMap, data)
|
|
}
|
|
|
|
var smatDebug = false
|
|
|
|
func smatLog(prefix, format string, args ...interface{}) {
|
|
if smatDebug {
|
|
fmt.Print(prefix)
|
|
fmt.Printf(format, args...)
|
|
}
|
|
}
|
|
|
|
type smatContext struct {
|
|
pairs []*smatPair
|
|
|
|
// Two registers, x & y.
|
|
x int
|
|
y int
|
|
|
|
actions int
|
|
}
|
|
|
|
type smatPair struct {
|
|
bm *Bitmap
|
|
bs *bitset.BitSet
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
var smatActionMap = smat.ActionMap{
|
|
smat.ActionID('X'): smatAction("x++", smatWrap(func(c *smatContext) { c.x++ })),
|
|
smat.ActionID('x'): smatAction("x--", smatWrap(func(c *smatContext) { c.x-- })),
|
|
smat.ActionID('Y'): smatAction("y++", smatWrap(func(c *smatContext) { c.y++ })),
|
|
smat.ActionID('y'): smatAction("y--", smatWrap(func(c *smatContext) { c.y-- })),
|
|
smat.ActionID('*'): smatAction("x*y", smatWrap(func(c *smatContext) { c.x = c.x * c.y })),
|
|
smat.ActionID('<'): smatAction("x<<", smatWrap(func(c *smatContext) { c.x = c.x << 1 })),
|
|
|
|
smat.ActionID('^'): smatAction("swap", smatWrap(func(c *smatContext) { c.x, c.y = c.y, c.x })),
|
|
|
|
smat.ActionID('['): smatAction(" pushPair", smatWrap(smatPushPair)),
|
|
smat.ActionID(']'): smatAction(" popPair", smatWrap(smatPopPair)),
|
|
|
|
smat.ActionID('B'): smatAction(" setBit", smatWrap(smatSetBit)),
|
|
smat.ActionID('b'): smatAction(" removeBit", smatWrap(smatRemoveBit)),
|
|
|
|
smat.ActionID('o'): smatAction(" or", smatWrap(smatOr)),
|
|
smat.ActionID('a'): smatAction(" and", smatWrap(smatAnd)),
|
|
|
|
smat.ActionID('#'): smatAction(" cardinality", smatWrap(smatCardinality)),
|
|
|
|
smat.ActionID('O'): smatAction(" orCardinality", smatWrap(smatOrCardinality)),
|
|
smat.ActionID('A'): smatAction(" andCardinality", smatWrap(smatAndCardinality)),
|
|
|
|
smat.ActionID('c'): smatAction(" clear", smatWrap(smatClear)),
|
|
smat.ActionID('r'): smatAction(" runOptimize", smatWrap(smatRunOptimize)),
|
|
|
|
smat.ActionID('e'): smatAction(" isEmpty", smatWrap(smatIsEmpty)),
|
|
|
|
smat.ActionID('i'): smatAction(" intersects", smatWrap(smatIntersects)),
|
|
|
|
smat.ActionID('f'): smatAction(" flip", smatWrap(smatFlip)),
|
|
|
|
smat.ActionID('-'): smatAction(" difference", smatWrap(smatDifference)),
|
|
}
|
|
|
|
var smatRunningPercentActions []smat.PercentAction
|
|
|
|
func init() {
|
|
var ids []int
|
|
for actionId := range smatActionMap {
|
|
ids = append(ids, int(actionId))
|
|
}
|
|
sort.Ints(ids)
|
|
|
|
pct := 100 / len(smatActionMap)
|
|
for _, actionId := range ids {
|
|
smatRunningPercentActions = append(smatRunningPercentActions,
|
|
smat.PercentAction{pct, smat.ActionID(actionId)})
|
|
}
|
|
|
|
smatActionMap[smat.ActionID('S')] = smatAction("SETUP", smatSetupFunc)
|
|
smatActionMap[smat.ActionID('T')] = smatAction("TEARDOWN", smatTeardownFunc)
|
|
}
|
|
|
|
// We only have one smat state: running.
|
|
func smatRunning(next byte) smat.ActionID {
|
|
return smat.PercentExecute(next, smatRunningPercentActions...)
|
|
}
|
|
|
|
func smatAction(name string, f func(ctx smat.Context) (smat.State, error)) func(smat.Context) (smat.State, error) {
|
|
return func(ctx smat.Context) (smat.State, error) {
|
|
c := ctx.(*smatContext)
|
|
c.actions++
|
|
|
|
smatLog(" ", "%s\n", name)
|
|
|
|
return f(ctx)
|
|
}
|
|
}
|
|
|
|
// Creates an smat action func based on a simple callback.
|
|
func smatWrap(cb func(c *smatContext)) func(smat.Context) (next smat.State, err error) {
|
|
return func(ctx smat.Context) (next smat.State, err error) {
|
|
c := ctx.(*smatContext)
|
|
cb(c)
|
|
return smatRunning, nil
|
|
}
|
|
}
|
|
|
|
// Invokes a callback function with the input v bounded to len(c.pairs).
|
|
func (c *smatContext) withPair(v int, cb func(*smatPair)) {
|
|
if len(c.pairs) > 0 {
|
|
if v < 0 {
|
|
v = -v
|
|
}
|
|
v = v % len(c.pairs)
|
|
cb(c.pairs[v])
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
func smatSetupFunc(ctx smat.Context) (next smat.State, err error) {
|
|
return smatRunning, nil
|
|
}
|
|
|
|
func smatTeardownFunc(ctx smat.Context) (next smat.State, err error) {
|
|
return nil, err
|
|
}
|
|
|
|
// ------------------------------------------------------------------
|
|
|
|
func smatPushPair(c *smatContext) {
|
|
c.pairs = append(c.pairs, &smatPair{
|
|
bm: NewBitmap(),
|
|
bs: bitset.New(100),
|
|
})
|
|
}
|
|
|
|
func smatPopPair(c *smatContext) {
|
|
if len(c.pairs) > 0 {
|
|
c.pairs = c.pairs[0 : len(c.pairs)-1]
|
|
}
|
|
}
|
|
|
|
func smatSetBit(c *smatContext) {
|
|
c.withPair(c.x, func(p *smatPair) {
|
|
y := uint32(c.y)
|
|
p.bm.AddInt(int(y))
|
|
p.bs.Set(uint(y))
|
|
p.checkEquals()
|
|
})
|
|
}
|
|
|
|
func smatRemoveBit(c *smatContext) {
|
|
c.withPair(c.x, func(p *smatPair) {
|
|
y := uint32(c.y)
|
|
p.bm.Remove(y)
|
|
p.bs.Clear(uint(y))
|
|
p.checkEquals()
|
|
})
|
|
}
|
|
|
|
func smatAnd(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c.withPair(c.y, func(py *smatPair) {
|
|
px.bm.And(py.bm)
|
|
px.bs = px.bs.Intersection(py.bs)
|
|
px.checkEquals()
|
|
py.checkEquals()
|
|
})
|
|
})
|
|
}
|
|
|
|
func smatOr(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c.withPair(c.y, func(py *smatPair) {
|
|
px.bm.Or(py.bm)
|
|
px.bs = px.bs.Union(py.bs)
|
|
px.checkEquals()
|
|
py.checkEquals()
|
|
})
|
|
})
|
|
}
|
|
|
|
func smatAndCardinality(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c.withPair(c.y, func(py *smatPair) {
|
|
c0 := px.bm.AndCardinality(py.bm)
|
|
c1 := px.bs.IntersectionCardinality(py.bs)
|
|
if c0 != uint64(c1) {
|
|
panic("expected same add cardinality")
|
|
}
|
|
px.checkEquals()
|
|
py.checkEquals()
|
|
})
|
|
})
|
|
}
|
|
|
|
func smatOrCardinality(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c.withPair(c.y, func(py *smatPair) {
|
|
c0 := px.bm.OrCardinality(py.bm)
|
|
c1 := px.bs.UnionCardinality(py.bs)
|
|
if c0 != uint64(c1) {
|
|
panic("expected same or cardinality")
|
|
}
|
|
px.checkEquals()
|
|
py.checkEquals()
|
|
})
|
|
})
|
|
}
|
|
|
|
func smatRunOptimize(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
px.bm.RunOptimize()
|
|
px.checkEquals()
|
|
})
|
|
}
|
|
|
|
func smatClear(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
px.bm.Clear()
|
|
px.bs = px.bs.ClearAll()
|
|
px.checkEquals()
|
|
})
|
|
}
|
|
|
|
func smatCardinality(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c0 := px.bm.GetCardinality()
|
|
c1 := px.bs.Count()
|
|
if c0 != uint64(c1) {
|
|
panic("expected same cardinality")
|
|
}
|
|
})
|
|
}
|
|
|
|
func smatIsEmpty(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c0 := px.bm.IsEmpty()
|
|
c1 := px.bs.None()
|
|
if c0 != c1 {
|
|
panic("expected same is empty")
|
|
}
|
|
})
|
|
}
|
|
|
|
func smatIntersects(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c.withPair(c.y, func(py *smatPair) {
|
|
v0 := px.bm.Intersects(py.bm)
|
|
v1 := px.bs.IntersectionCardinality(py.bs) > 0
|
|
if v0 != v1 {
|
|
panic("intersects not equal")
|
|
}
|
|
|
|
px.checkEquals()
|
|
py.checkEquals()
|
|
})
|
|
})
|
|
}
|
|
|
|
func smatFlip(c *smatContext) {
|
|
c.withPair(c.x, func(p *smatPair) {
|
|
y := uint32(c.y)
|
|
p.bm.Flip(uint64(y), uint64(y)+1)
|
|
p.bs = p.bs.Flip(uint(y))
|
|
p.checkEquals()
|
|
})
|
|
}
|
|
|
|
func smatDifference(c *smatContext) {
|
|
c.withPair(c.x, func(px *smatPair) {
|
|
c.withPair(c.y, func(py *smatPair) {
|
|
px.bm.AndNot(py.bm)
|
|
px.bs = px.bs.Difference(py.bs)
|
|
px.checkEquals()
|
|
py.checkEquals()
|
|
})
|
|
})
|
|
}
|
|
|
|
func (p *smatPair) checkEquals() {
|
|
if !p.equalsBitSet(p.bs, p.bm) {
|
|
panic("bitset mismatch")
|
|
}
|
|
}
|
|
|
|
func (p *smatPair) equalsBitSet(a *bitset.BitSet, b *Bitmap) bool {
|
|
for i, e := a.NextSet(0); e; i, e = a.NextSet(i + 1) {
|
|
if !b.ContainsInt(int(i)) {
|
|
fmt.Printf("in a bitset, not b bitmap, i: %d\n", i)
|
|
fmt.Printf(" a bitset: %s\n b bitmap: %s\n",
|
|
a.String(), b.String())
|
|
return false
|
|
}
|
|
}
|
|
|
|
i := b.Iterator()
|
|
for i.HasNext() {
|
|
v := i.Next()
|
|
if !a.Test(uint(v)) {
|
|
fmt.Printf("in b bitmap, not a bitset, v: %d\n", v)
|
|
fmt.Printf(" a bitset: %s\n b bitmap: %s\n",
|
|
a.String(), b.String())
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|