Use new gofuzz features

pkg/api/testing/fuzzer.go

@@ -35,7 +35,6 @@ import (
 
 func fuzzOneOf(c fuzz.Continue, objs ...interface{}) {
 	// Use a new fuzzer which cannot populate nil to ensure one obj will be set.
-	// FIXME: would be nicer to use FuzzOnePtr() and reflect.
 	f := fuzz.New().NilChance(0).NumElements(1, 1)
 	i := c.RandUint64() % uint64(len(objs))
 	f.Fuzz(objs[i])
@@ -103,18 +102,15 @@ func FuzzerFor(t *testing.T, version string, src rand.Source) *fuzz.Fuzzer {
 			c.Fuzz(&j.Spec)
 		},
 		func(j *api.ReplicationControllerSpec, c fuzz.Continue) {
-			// TemplateRef is set to nil by omission; this is required for round trip
+			c.FuzzNoCustom(j)   // fuzz self without calling this function again
-			c.Fuzz(&j.Template)
+			j.TemplateRef = nil // this is required for round trip
-			c.Fuzz(&j.Selector)
-			j.Replicas = int(c.RandUint64())
 		},
 		func(j *api.ReplicationControllerStatus, c fuzz.Continue) {
 			// only replicas round trips
 			j.Replicas = int(c.RandUint64())
 		},
 		func(j *api.List, c fuzz.Continue) {
-			c.Fuzz(&j.ListMeta)
+			c.FuzzNoCustom(j) // fuzz self without calling this function again
-			c.Fuzz(&j.Items)
 			if j.Items == nil {
 				j.Items = []runtime.Object{}
 			}
@@ -132,18 +128,6 @@ func FuzzerFor(t *testing.T, version string, src rand.Source) *fuzz.Fuzzer {
 				*j = t
 			}
 		},
-		func(intstr *util.IntOrString, c fuzz.Continue) {
-			// util.IntOrString will panic if its kind is set wrong.
-			if c.RandBool() {
-				intstr.Kind = util.IntstrInt
-				intstr.IntVal = int(c.RandUint64())
-				intstr.StrVal = ""
-			} else {
-				intstr.Kind = util.IntstrString
-				intstr.IntVal = 0
-				intstr.StrVal = c.RandString()
-			}
-		},
 		func(pb map[docker.Port][]docker.PortBinding, c fuzz.Continue) {
 			// This is necessary because keys with nil values get omitted.
 			// TODO: Is this a bug?
@@ -194,34 +178,12 @@ func FuzzerFor(t *testing.T, version string, src rand.Source) *fuzz.Fuzzer {
 			*p = types[c.Rand.Intn(len(types))]
 		},
 		func(ct *api.Container, c fuzz.Continue) {
-			// This function exists soley to set TerminationMessagePath to a
+			c.FuzzNoCustom(ct)                                          // fuzz self without calling this function again
-			// non-empty string. TODO: consider making TerminationMessagePath a
+			ct.TerminationMessagePath = "/" + ct.TerminationMessagePath // Must be non-empty
-			// new type to simplify fuzzing.
-			ct.TerminationMessagePath = api.TerminationMessagePathDefault
-			// Let fuzzer handle the rest of the fileds.
-			c.Fuzz(&ct.Name)
-			c.Fuzz(&ct.Image)
-			c.Fuzz(&ct.Command)
-			c.Fuzz(&ct.Ports)
-			c.Fuzz(&ct.WorkingDir)
-			c.Fuzz(&ct.Env)
-			c.Fuzz(&ct.VolumeMounts)
-			c.Fuzz(&ct.LivenessProbe)
-			c.Fuzz(&ct.Lifecycle)
-			c.Fuzz(&ct.ImagePullPolicy)
-			c.Fuzz(&ct.Privileged)
-			c.Fuzz(&ct.Capabilities)
 		},
 		func(e *api.Event, c fuzz.Continue) {
+			c.FuzzNoCustom(e) // fuzz self without calling this function again
 			// Fix event count to 1, otherwise, if a v1beta1 or v1beta2 event has a count set arbitrarily, it's count is ignored
-			c.Fuzz(&e.TypeMeta)
-			c.Fuzz(&e.ObjectMeta)
-			c.Fuzz(&e.InvolvedObject)
-			c.Fuzz(&e.Reason)
-			c.Fuzz(&e.Message)
-			c.Fuzz(&e.Source)
-			c.Fuzz(&e.FirstTimestamp)
-			c.Fuzz(&e.LastTimestamp)
 			if e.FirstTimestamp.IsZero() {
 				e.Count = 1
 			} else {
@@ -229,11 +191,8 @@ func FuzzerFor(t *testing.T, version string, src rand.Source) *fuzz.Fuzzer {
 			}
 		},
 		func(s *api.Secret, c fuzz.Continue) {
-			c.Fuzz(&s.TypeMeta)
+			c.FuzzNoCustom(s) // fuzz self without calling this function again
-			c.Fuzz(&s.ObjectMeta)
-
 			s.Type = api.SecretTypeOpaque
-			c.Fuzz(&s.Data)
 		},
 		func(ep *api.Endpoint, c fuzz.Continue) {
 			// TODO: If our API used a particular type for IP fields we could just catch that here.
@@ -241,29 +200,16 @@ func FuzzerFor(t *testing.T, version string, src rand.Source) *fuzz.Fuzzer {
 			ep.Port = c.Rand.Intn(65536)
 		},
 		func(http *api.HTTPGetAction, c fuzz.Continue) {
-			http.Path = "/" + c.RandString() // can't be blank
+			c.FuzzNoCustom(http)        // fuzz self without calling this function again
-			c.Fuzz(&http.Port)
+			http.Path = "/" + http.Path // can't be blank
-			c.Fuzz(&http.Host)
 		},
 		func(ss *api.ServiceSpec, c fuzz.Continue) {
-			// TODO: I wish I could say "fuzz myself but without the custom fuzz-func"
+			c.FuzzNoCustom(ss) // fuzz self without calling this function again
-			c.Fuzz(&ss.Port)
-			c.Fuzz(&ss.Protocol)
-			c.Fuzz(&ss.Selector)
-			c.Fuzz(&ss.PortalIP)
-			c.Fuzz(&ss.CreateExternalLoadBalancer)
-			c.Fuzz(&ss.PublicIPs)
-			c.Fuzz(&ss.SessionAffinity)
-			// TODO: would be great if types could voluntarily fuzz themselves.
-			kinds := []util.IntstrKind{util.IntstrInt, util.IntstrString}
-			ss.ContainerPort.Kind = kinds[c.Rand.Intn(len(kinds))]
 			switch ss.ContainerPort.Kind {
 			case util.IntstrInt:
-				ss.ContainerPort.IntVal = 1 + c.Rand.Intn(65535) // non-zero
+				ss.ContainerPort.IntVal = 1 + ss.ContainerPort.IntVal%65535 // non-zero
-				ss.ContainerPort.StrVal = ""                     // needed because we reuse objects without zeroing them
 			case util.IntstrString:
-				ss.ContainerPort.StrVal = "x" + c.RandString() // non-empty
+				ss.ContainerPort.StrVal = "x" + ss.ContainerPort.StrVal // non-empty
-				ss.ContainerPort.IntVal = 0                    // needed because we reuse objects without zeroing them
 			}
 		},
 	)

pkg/util/util.go

@@ -29,6 +29,7 @@ import (
 	"time"
 
 	"github.com/golang/glog"
+	"github.com/google/gofuzz"
 )
 
 // For testing, bypass HandleCrash.
@@ -162,6 +163,18 @@ func (intstr IntOrString) MarshalJSON() ([]byte, error) {
 	}
 }
 
+func (intstr *IntOrString) Fuzz(c fuzz.Continue) {
+	if c.RandBool() {
+		intstr.Kind = IntstrInt
+		c.Fuzz(&intstr.IntVal)
+		intstr.StrVal = ""
+	} else {
+		intstr.Kind = IntstrString
+		intstr.IntVal = 0
+		c.Fuzz(&intstr.StrVal)
+	}
+}
+
 // Takes a list of strings and compiles them into a list of regular expressions
 func CompileRegexps(regexpStrings []string) ([]*regexp.Regexp, error) {
 	regexps := []*regexp.Regexp{}