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authorMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
committerMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
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Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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+gofuzz
+======
+
+gofuzz is a library for populating go objects with random values.
+
+[![GoDoc](https://godoc.org/github.com/google/gofuzz?status.png)](https://godoc.org/github.com/google/gofuzz)
+[![Travis](https://travis-ci.org/google/gofuzz.svg?branch=master)](https://travis-ci.org/google/gofuzz)
+
+This is useful for testing:
+
+* Do your project's objects really serialize/unserialize correctly in all cases?
+* Is there an incorrectly formatted object that will cause your project to panic?
+
+Import with ```import "github.com/google/gofuzz"```
+
+You can use it on single variables:
+```go
+f := fuzz.New()
+var myInt int
+f.Fuzz(&myInt) // myInt gets a random value.
+```
+
+You can use it on maps:
+```go
+f := fuzz.New().NilChance(0).NumElements(1, 1)
+var myMap map[ComplexKeyType]string
+f.Fuzz(&myMap) // myMap will have exactly one element.
+```
+
+Customize the chance of getting a nil pointer:
+```go
+f := fuzz.New().NilChance(.5)
+var fancyStruct struct {
+ A, B, C, D *string
+}
+f.Fuzz(&fancyStruct) // About half the pointers should be set.
+```
+
+You can even customize the randomization completely if needed:
+```go
+type MyEnum string
+const (
+ A MyEnum = "A"
+ B MyEnum = "B"
+)
+type MyInfo struct {
+ Type MyEnum
+ AInfo *string
+ BInfo *string
+}
+
+f := fuzz.New().NilChance(0).Funcs(
+ func(e *MyInfo, c fuzz.Continue) {
+ switch c.Intn(2) {
+ case 0:
+ e.Type = A
+ c.Fuzz(&e.AInfo)
+ case 1:
+ e.Type = B
+ c.Fuzz(&e.BInfo)
+ }
+ },
+)
+
+var myObject MyInfo
+f.Fuzz(&myObject) // Type will correspond to whether A or B info is set.
+```
+
+See more examples in ```example_test.go```.
+
+Happy testing!