do not require --default-backend-service

test/e2e/defaultbackend/custom_default_backend.go

@@ -0,0 +1,62 @@
+/*
+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 defaultbackend
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	"github.com/parnurzeal/gorequest"
+
+	appsv1beta1 "k8s.io/api/apps/v1beta1"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+)
+
+var _ = framework.IngressNginxDescribe("Dynamic Certificate", func() {
+	f := framework.NewDefaultFramework("custom-default-backend")
+
+	BeforeEach(func() {
+		err := f.NewEchoDeploymentWithReplicas(1)
+		Expect(err).NotTo(HaveOccurred())
+
+		framework.UpdateDeployment(f.KubeClientSet, f.IngressController.Namespace, "nginx-ingress-controller", 1,
+			func(deployment *appsv1beta1.Deployment) error {
+				args := deployment.Spec.Template.Spec.Containers[0].Args
+				args = append(args, fmt.Sprintf("--default-backend-service=%s/%s", f.IngressController.Namespace, "http-svc"))
+				deployment.Spec.Template.Spec.Containers[0].Args = args
+				_, err := f.KubeClientSet.AppsV1beta1().Deployments(f.IngressController.Namespace).Update(deployment)
+
+				return err
+			})
+
+		err = f.WaitForNginxServer("_",
+			func(server string) bool {
+				return strings.Contains(server, "set $proxy_upstream_name \"upstream-default-backend\"")
+			})
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("uses custom default backend", func() {
+		resp, _, errs := gorequest.New().Get(f.IngressController.HTTPURL).End()
+		Expect(errs).Should(BeEmpty())
+		Expect(resp.StatusCode).Should(Equal(http.StatusOK))
+	})
+})