Added limit-rate annotation test

test/e2e/annotations/limitrate.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2020 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 annotations
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/onsi/ginkgo"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+)
+
+var _ = framework.DescribeAnnotation("limit-rate", func() {
+	f := framework.NewDefaultFramework("limit-rate-annotation")
+	host := "limit-rate-annotation"
+
+	ginkgo.BeforeEach(func() {
+		f.NewEchoDeployment()
+	})
+
+	ginkgo.It("Check limit-rate annotation", func() {
+		annotation := make(map[string]string)
+		annotation["nginx.ingress.kubernetes.io/proxy-buffering"] = "on"
+		limitRate := 1
+		annotation["nginx.ingress.kubernetes.io/limit-rate"] = strconv.Itoa(limitRate)
+
+		ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotation)
+		f.EnsureIngress(ing)
+
+		f.WaitForNginxConfiguration(func(cfg string) bool {
+			return strings.Contains(cfg, fmt.Sprintf("limit_rate %vk;", limitRate))
+		})
+
+		limitRate = 90
+		annotation["nginx.ingress.kubernetes.io/limit-rate"] = strconv.Itoa(limitRate)
+
+		ing.SetAnnotations(annotation)
+		f.UpdateIngress(ing)
+
+		f.WaitForNginxConfiguration(func(cfg string) bool {
+			return strings.Contains(cfg, fmt.Sprintf("limit_rate %vk;", limitRate))
+		})
+	})
+})