/* Copyright 2016 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 common import ( "k8s.io/api/core/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/util/uuid" "k8s.io/kubernetes/test/e2e/framework" imageutils "k8s.io/kubernetes/test/utils/image" ) var _ = framework.KubeDescribe("Docker Containers", func() { f := framework.NewDefaultFramework("containers") /* Testname: container-without-command-args Description: When a Pod is created neither 'command' nor 'args' are provided for a Container, ensure that the docker image's default command and args are used. */ framework.ConformanceIt("should use the image defaults if command and args are blank [NodeConformance]", func() { f.TestContainerOutput("use defaults", entrypointTestPod(), 0, []string{ "[/ep default arguments]", }) }) /* Testname: container-with-args Description: When a Pod is created and 'args' are provided for a Container, ensure that they take precedent to the docker image's default arguments, but that the default command is used. */ framework.ConformanceIt("should be able to override the image's default arguments (docker cmd) [NodeConformance]", func() { pod := entrypointTestPod() pod.Spec.Containers[0].Args = []string{"override", "arguments"} f.TestContainerOutput("override arguments", pod, 0, []string{ "[/ep override arguments]", }) }) // Note: when you override the entrypoint, the image's arguments (docker cmd) // are ignored. /* Testname: container-with-command Description: When a Pod is created and 'command' is provided for a Container, ensure that it takes precedent to the docker image's default command. */ framework.ConformanceIt("should be able to override the image's default command (docker entrypoint) [NodeConformance]", func() { pod := entrypointTestPod() pod.Spec.Containers[0].Command = []string{"/ep-2"} f.TestContainerOutput("override command", pod, 0, []string{ "[/ep-2]", }) }) /* Testname: container-with-command-args Description: When a Pod is created and 'command' and 'args' are provided for a Container, ensure that they take precedent to the docker image's default command and arguments. */ framework.ConformanceIt("should be able to override the image's default command and arguments [NodeConformance]", func() { pod := entrypointTestPod() pod.Spec.Containers[0].Command = []string{"/ep-2"} pod.Spec.Containers[0].Args = []string{"override", "arguments"} f.TestContainerOutput("override all", pod, 0, []string{ "[/ep-2 override arguments]", }) }) }) const testContainerName = "test-container" // Return a prototypical entrypoint test pod func entrypointTestPod() *v1.Pod { podName := "client-containers-" + string(uuid.NewUUID()) one := int64(1) return &v1.Pod{ ObjectMeta: metav1.ObjectMeta{ Name: podName, }, Spec: v1.PodSpec{ Containers: []v1.Container{ { Name: testContainerName, Image: imageutils.GetE2EImage(imageutils.EntrypointTester), }, }, RestartPolicy: v1.RestartPolicyNever, TerminationGracePeriodSeconds: &one, }, } }