e2e: define environment

Author: pohly

test/e2e/environment/environment.go

@@ -0,0 +1,33 @@
+/*
+Copyright 2023 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 environment contains pre-defined environments used by test/e2e
+// and/or test/e2e_node.
+package environment
+
+import (
+	"k8s.io/kubernetes/test/e2e/framework"
+)
+
+var (
+	// The test does not work in UserNS (for example, `open /proc/sys/kernel/shm_rmid_forced: permission denied`).
+	NotInUserNS = framework.WithEnvironment(framework.ValidEnvironments.Add("NotInUserNS"))
+)
+
+func init() {
+	// This prevents adding additional ad-hoc environments in tests.
+	framework.ValidEnvironments.Freeze()
+}