containerd/integration/image_load_test.go
Claudiu Belu 5847340a7d tests: Refactors container image usage
Currently, the cri-integration tests do not work on Windows due to various reasons.
One of the reasons is because all the tests are using Linux-specific images. This
commit refactors the image pulling / usage in the cri-integration tests, making it
easier to update, and easier to configure the a custom registry to pull those images
from.

For Windows runs, custom registries can be created, which will also contain Windows
images, and the cri-integration tests can be configured to use those registries by
specifying the "--image-list" argument, a TOML file which will contain an alternative
mapping of the default images.

Signed-off-by: Claudiu Belu <cbelu@cloudbasesolutions.com>
2021-04-27 08:44:21 +00:00

102 lines
3.3 KiB
Go

// +build linux
/*
Copyright The containerd 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 integration
import (
"io/ioutil"
"os"
"os/exec"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
runtime "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
)
// Test to load an image from tarball.
func TestImageLoad(t *testing.T) {
testImage := GetImage(BusyBox)
loadedImage := testImage
_, err := exec.LookPath("docker")
if err != nil {
t.Skipf("Docker is not available: %v", err)
}
t.Logf("docker save image into tarball")
output, err := exec.Command("docker", "pull", testImage).CombinedOutput()
require.NoError(t, err, "output: %q", output)
tarF, err := ioutil.TempFile("", "image-load")
tar := tarF.Name()
require.NoError(t, err)
defer func() {
assert.NoError(t, os.RemoveAll(tar))
}()
output, err = exec.Command("docker", "save", testImage, "-o", tar).CombinedOutput()
require.NoError(t, err, "output: %q", output)
t.Logf("make sure no such image in cri")
img, err := imageService.ImageStatus(&runtime.ImageSpec{Image: testImage})
require.NoError(t, err)
if img != nil {
require.NoError(t, imageService.RemoveImage(&runtime.ImageSpec{Image: testImage}))
}
t.Logf("load image in cri")
ctr, err := exec.LookPath("ctr")
require.NoError(t, err, "ctr should be installed, make sure you've run `make install.deps`")
output, err = exec.Command(ctr, "-address="+containerdEndpoint,
"-n=k8s.io", "images", "import", tar).CombinedOutput()
require.NoError(t, err, "output: %q", output)
t.Logf("make sure image is loaded")
// Use Eventually because the cri plugin needs a short period of time
// to pick up images imported into containerd directly.
require.NoError(t, Eventually(func() (bool, error) {
img, err = imageService.ImageStatus(&runtime.ImageSpec{Image: testImage})
if err != nil {
return false, err
}
return img != nil, nil
}, 100*time.Millisecond, 10*time.Second))
require.Equal(t, []string{loadedImage}, img.RepoTags)
t.Logf("create a container with the loaded image")
sbConfig := PodSandboxConfig("sandbox", Randomize("image-load"))
sb, err := runtimeService.RunPodSandbox(sbConfig, *runtimeHandler)
require.NoError(t, err)
defer func() {
assert.NoError(t, runtimeService.StopPodSandbox(sb))
assert.NoError(t, runtimeService.RemovePodSandbox(sb))
}()
containerConfig := ContainerConfig(
"container",
testImage,
WithCommand("tail", "-f", "/dev/null"),
)
// Rely on sandbox clean to do container cleanup.
cn, err := runtimeService.CreateContainer(sb, containerConfig, sbConfig)
require.NoError(t, err)
require.NoError(t, runtimeService.StartContainer(cn))
t.Logf("make sure container is running")
status, err := runtimeService.ContainerStatus(cn)
require.NoError(t, err)
require.Equal(t, runtime.ContainerState_CONTAINER_RUNNING, status.State)
}