add files

test/e2e/cgroups/cgroups_linux.go

@@ -0,0 +1,65 @@
+//go:build linux
+// +build linux
+
+/*
+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 cgroups
+
+import (
+	"log"
+	"os"
+
+	"github.com/onsi/ginkgo/v2"
+	"github.com/stretchr/testify/assert"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+
+	"k8s.io/ingress-nginx/pkg/util/runtime"
+)
+
+var _ = framework.IngressNginxDescribeSerial("[CGroups] cgroups", func() {
+	f := framework.NewDefaultFramework("cgroups")
+
+	ginkgo.BeforeEach(func() {
+		f.NewEchoDeployment()
+		f.NewSlowEchoDeployment()
+	})
+
+	ginkgo.It("detects if cgroups is avaliable", func() {
+		assert.Equal(ginkgo.GinkgoT(), runtime.IsCgroupAvaliable(), 1)
+	})
+
+	ginkgo.It("detects cgroups version v1", func() {
+		assert.Equal(ginkgo.GinkgoT(), runtime.readCgroupFileToInt64(), 1)
+	})
+
+	ginkgo.It("detects number of CPUs properly in cgroups v1", func() {
+		assert.Equal(ginkgo.GinkgoT(), runtime.NumCPU(), -1)
+	})
+
+	ginkgo.It("detects cgroups version v2", func() {
+		// create cgroups2 files
+		if err := os.MkdirAll("a/b/c/d", os.ModePerm); err != nil {
+			log.Fatal(err)
+		}
+
+	})
+
+	ginkgo.It("detects number of CPUs properly in cgroups v2", func() {
+		assert.Equal(ginkgo.GinkgoT(), runtime.NumCPU(), -1)
+	})
+})

test/e2e/cgroups/cgroups_notlinux.go

@@ -0,0 +1,42 @@
+//go:build !linux
+// +build !linux
+
+/*
+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 cgroups
+
+import (
+	"github.com/onsi/ginkgo/v2"
+	"github.com/stretchr/testify/assert"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+
+	"k8s.io/ingress-nginx/pkg/util/runtime"
+)
+
+var _ = framework.IngressNginxDescribeSerial("[CGroups] cgroups", func() {
+	f := framework.NewDefaultFramework("cgroups")
+
+	ginkgo.BeforeEach(func() {
+		f.NewEchoDeployment()
+		f.NewSlowEchoDeployment()
+	})
+
+	ginkgo.It("detects cgroups is not avaliable", func() {
+		assert.True(ginkgo.GinkgoT(), !runtime.IsCgroupAvaliable())
+	})
+})