add fuzzer dir for each apigroup

pkg/apis/extensions/fuzzer/fuzzer.go

@@ -0,0 +1,109 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package fuzzer
+
+import (
+	"fmt"
+
+	fuzz "github.com/google/gofuzz"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
+	"k8s.io/apimachinery/pkg/util/intstr"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+)
+
+// Funcs returns the fuzzer functions for the extensions api group.
+var Funcs = func(codecs runtimeserializer.CodecFactory) []interface{} {
+	return []interface{}{
+		func(j *extensions.DeploymentSpec, c fuzz.Continue) {
+			c.FuzzNoCustom(j) // fuzz self without calling this function again
+			rhl := int32(c.Rand.Int31())
+			pds := int32(c.Rand.Int31())
+			j.RevisionHistoryLimit = &rhl
+			j.ProgressDeadlineSeconds = &pds
+		},
+		func(j *extensions.DeploymentStrategy, c fuzz.Continue) {
+			c.FuzzNoCustom(j) // fuzz self without calling this function again
+			// Ensure that strategyType is one of valid values.
+			strategyTypes := []extensions.DeploymentStrategyType{extensions.RecreateDeploymentStrategyType, extensions.RollingUpdateDeploymentStrategyType}
+			j.Type = strategyTypes[c.Rand.Intn(len(strategyTypes))]
+			if j.Type != extensions.RollingUpdateDeploymentStrategyType {
+				j.RollingUpdate = nil
+			} else {
+				rollingUpdate := extensions.RollingUpdateDeployment{}
+				if c.RandBool() {
+					rollingUpdate.MaxUnavailable = intstr.FromInt(int(c.Rand.Int31()))
+					rollingUpdate.MaxSurge = intstr.FromInt(int(c.Rand.Int31()))
+				} else {
+					rollingUpdate.MaxSurge = intstr.FromString(fmt.Sprintf("%d%%", c.Rand.Int31()))
+				}
+				j.RollingUpdate = &rollingUpdate
+			}
+		},
+		func(psp *extensions.PodSecurityPolicySpec, c fuzz.Continue) {
+			c.FuzzNoCustom(psp) // fuzz self without calling this function again
+			runAsUserRules := []extensions.RunAsUserStrategy{extensions.RunAsUserStrategyMustRunAsNonRoot, extensions.RunAsUserStrategyMustRunAs, extensions.RunAsUserStrategyRunAsAny}
+			psp.RunAsUser.Rule = runAsUserRules[c.Rand.Intn(len(runAsUserRules))]
+			seLinuxRules := []extensions.SELinuxStrategy{extensions.SELinuxStrategyRunAsAny, extensions.SELinuxStrategyMustRunAs}
+			psp.SELinux.Rule = seLinuxRules[c.Rand.Intn(len(seLinuxRules))]
+		},
+		func(s *extensions.Scale, c fuzz.Continue) {
+			c.FuzzNoCustom(s) // fuzz self without calling this function again
+			// TODO: Implement a fuzzer to generate valid keys, values and operators for
+			// selector requirements.
+			if s.Status.Selector != nil {
+				s.Status.Selector = &metav1.LabelSelector{
+					MatchLabels: map[string]string{
+						"testlabelkey": "testlabelval",
+					},
+					MatchExpressions: []metav1.LabelSelectorRequirement{
+						{
+							Key:      "testkey",
+							Operator: metav1.LabelSelectorOpIn,
+							Values:   []string{"val1", "val2", "val3"},
+						},
+					},
+				}
+			}
+		},
+		func(j *extensions.DaemonSetSpec, c fuzz.Continue) {
+			c.FuzzNoCustom(j) // fuzz self without calling this function again
+			rhl := int32(c.Rand.Int31())
+			j.RevisionHistoryLimit = &rhl
+		},
+		func(j *extensions.DaemonSetUpdateStrategy, c fuzz.Continue) {
+			c.FuzzNoCustom(j) // fuzz self without calling this function again
+			// Ensure that strategyType is one of valid values.
+			strategyTypes := []extensions.DaemonSetUpdateStrategyType{extensions.RollingUpdateDaemonSetStrategyType, extensions.OnDeleteDaemonSetStrategyType}
+			j.Type = strategyTypes[c.Rand.Intn(len(strategyTypes))]
+			if j.Type != extensions.RollingUpdateDaemonSetStrategyType {
+				j.RollingUpdate = nil
+			} else {
+				rollingUpdate := extensions.RollingUpdateDaemonSet{}
+				if c.RandBool() {
+					if c.RandBool() {
+						rollingUpdate.MaxUnavailable = intstr.FromInt(1 + int(c.Rand.Int31()))
+					} else {
+						rollingUpdate.MaxUnavailable = intstr.FromString(fmt.Sprintf("%d%%", 1+c.Rand.Int31()))
+					}
+				}
+				j.RollingUpdate = &rollingUpdate
+			}
+		},
+	}
+}