273c2bb168
Most of the tests are pulling and deleting the same test images, which can be quite inefficient, especially on Windows nodes, where the images are larger than the Linux ones (a nanoserver Container image is ~250MB in size). We can instead pull them only once, and reuse them. This will reduce the test run time on Windows considerably. Additionally, some of the test images are currently hosted on dockerhub (busybox image), which has introduced image ratelimiting in November 2020, which means that test runners could potentially hit that limit faster with the current implementation. This will reduce that risk. Some tests are specifically deleting images, so we always have to ensure that they are pulled. Signed-off-by: Claudiu Belu <cbelu@cloudbasesolutions.com>
129 lines
3.5 KiB
Go
129 lines
3.5 KiB
Go
// +build linux
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/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package integration
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
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)
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func TestPodHostname(t *testing.T) {
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hostname, err := os.Hostname()
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require.NoError(t, err)
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for name, test := range map[string]struct {
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opts []PodSandboxOpts
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expectedHostname string
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expectErr bool
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}{
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"regular pod with custom hostname": {
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opts: []PodSandboxOpts{
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WithPodHostname("test-hostname"),
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},
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expectedHostname: "test-hostname",
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},
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"host network pod without custom hostname": {
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opts: []PodSandboxOpts{
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WithHostNetwork,
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},
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expectedHostname: hostname,
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},
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"host network pod with custom hostname should fail": {
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opts: []PodSandboxOpts{
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WithHostNetwork,
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WithPodHostname("test-hostname"),
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},
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expectErr: true,
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},
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} {
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t.Run(name, func(t *testing.T) {
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testPodLogDir, err := ioutil.TempDir("/tmp", "hostname")
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require.NoError(t, err)
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defer os.RemoveAll(testPodLogDir)
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opts := append(test.opts, WithPodLogDirectory(testPodLogDir))
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t.Log("Create a sandbox with hostname")
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sbConfig := PodSandboxConfig("sandbox", "hostname", opts...)
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sb, err := runtimeService.RunPodSandbox(sbConfig, *runtimeHandler)
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if err != nil {
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if !test.expectErr {
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t.Fatalf("Unexpected RunPodSandbox error: %v", err)
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}
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return
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}
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// Make sure the sandbox is cleaned up.
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defer func() {
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assert.NoError(t, runtimeService.StopPodSandbox(sb))
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assert.NoError(t, runtimeService.RemovePodSandbox(sb))
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}()
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if test.expectErr {
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t.Fatalf("Expected RunPodSandbox to return error")
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}
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var (
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testImage = GetImage(BusyBox)
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containerName = "test-container"
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)
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EnsureImageExists(t, testImage)
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t.Log("Create a container to print env")
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cnConfig := ContainerConfig(
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containerName,
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testImage,
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WithCommand("sh", "-c",
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"echo -n /etc/hostname= && cat /etc/hostname && env"),
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WithLogPath(containerName),
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)
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cn, err := runtimeService.CreateContainer(sb, cnConfig, sbConfig)
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require.NoError(t, err)
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t.Log("Start the container")
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require.NoError(t, runtimeService.StartContainer(cn))
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t.Log("Wait for container to finish running")
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require.NoError(t, Eventually(func() (bool, error) {
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s, err := runtimeService.ContainerStatus(cn)
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if err != nil {
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return false, err
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}
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if s.GetState() == runtime.ContainerState_CONTAINER_EXITED {
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return true, nil
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}
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return false, nil
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}, time.Second, 30*time.Second))
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content, err := ioutil.ReadFile(filepath.Join(testPodLogDir, containerName))
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assert.NoError(t, err)
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t.Log("Search hostname env in container log")
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assert.Contains(t, string(content), "HOSTNAME="+test.expectedHostname)
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t.Log("Search /etc/hostname content in container log")
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assert.Contains(t, string(content), "/etc/hostname="+test.expectedHostname)
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})
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}
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}
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