Implement fuzzer for feature security policy

pkg/fuzz/features/features.go

@@ -27,4 +27,5 @@ var All = []fuzz.Feature{
 	PresharedCert,
 	CDN,
 	IAP,
+	SecurityPolicy,
 }

pkg/fuzz/features/security_policy.go

@@ -0,0 +1,77 @@
+/*
+Copyright 2018 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 features
+
+import (
+	"net/http"
+
+	"k8s.io/api/extensions/v1beta1"
+	"k8s.io/ingress-gce/pkg/fuzz"
+)
+
+// SecurityPolicy is a feature in BackendConfig that supports using GCP
+// Security Policy.
+var SecurityPolicy = &SecurityPolicyFeature{}
+
+// SecurityPolicyFeature implements the associated feature.
+type SecurityPolicyFeature struct{}
+
+// NewValidator implements fuzz.Feature.
+func (SecurityPolicyFeature) NewValidator() fuzz.FeatureValidator {
+	return &securityPolicyValidator{}
+}
+
+// Name implements fuzz.Feature.
+func (*SecurityPolicyFeature) Name() string {
+	return "SecurityPolicy"
+}
+
+// securityPolicyValidator is a validator for SecurityPolicyFeature.
+type securityPolicyValidator struct {
+	fuzz.NullValidator
+
+	env fuzz.ValidatorEnv
+	ing *v1beta1.Ingress
+}
+
+// Name implements fuzz.FeatureValidator.
+func (*securityPolicyValidator) Name() string {
+	return "SecurityPolicy"
+}
+
+// ConfigureAttributes implements fuzz.FeatureValidator.
+func (v *securityPolicyValidator) ConfigureAttributes(env fuzz.ValidatorEnv, ing *v1beta1.Ingress, a *fuzz.IngressValidatorAttributes) error {
+	// Capture the env for use later in CheckResponse.
+	v.ing = ing
+	v.env = env
+	return nil
+}
+
+// CheckResponse implements fuzz.FeatureValidator.
+func (v *securityPolicyValidator) CheckResponse(host, path string, resp *http.Response, body []byte) (fuzz.CheckResponseAction, error) {
+	// There isn't anything interesting to check in response.
+	return fuzz.CheckResponseContinue, nil
+}
+
+// HasBetaResource implements Feature. SecurityPolicy requires Beta
+// resource.
+func (v *securityPolicyValidator) HasBetaResource(resourceType string) bool {
+	if resourceType == "backendService" {
+		return true
+	}
+	return false
+}