DockerCLI/cli/command/container/create_test.go

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Go
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package container
import (
"context"
"io"
"io/ioutil"
"os"
"runtime"
"strings"
"testing"
"github.com/docker/cli/internal/test"
"github.com/docker/cli/internal/test/testutil"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/network"
"github.com/gotestyourself/gotestyourself/fs"
"github.com/pkg/errors"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestCIDFileNoOPWithNoFilename(t *testing.T) {
file, err := newCIDFile("")
require.NoError(t, err)
assert.Equal(t, &cidFile{}, file)
assert.NoError(t, file.Write("id"))
assert.NoError(t, file.Close())
}
func TestNewCIDFileWhenFileAlreadyExists(t *testing.T) {
tempfile := fs.NewFile(t, "test-cid-file")
defer tempfile.Remove()
_, err := newCIDFile(tempfile.Path())
testutil.ErrorContains(t, err, "Container ID file found")
}
func TestCIDFileCloseWithNoWrite(t *testing.T) {
tempdir := fs.NewDir(t, "test-cid-file")
defer tempdir.Remove()
path := tempdir.Join("cidfile")
file, err := newCIDFile(path)
require.NoError(t, err)
assert.Equal(t, file.path, path)
assert.NoError(t, file.Close())
_, err = os.Stat(path)
assert.True(t, os.IsNotExist(err))
}
func TestCIDFileCloseWithWrite(t *testing.T) {
tempdir := fs.NewDir(t, "test-cid-file")
defer tempdir.Remove()
path := tempdir.Join("cidfile")
file, err := newCIDFile(path)
require.NoError(t, err)
content := "id"
assert.NoError(t, file.Write(content))
actual, err := ioutil.ReadFile(path)
require.NoError(t, err)
assert.Equal(t, content, string(actual))
assert.NoError(t, file.Close())
_, err = os.Stat(path)
require.NoError(t, err)
}
func TestCreateContainerPullsImageIfMissing(t *testing.T) {
imageName := "does-not-exist-locally"
responseCounter := 0
containerID := "abcdef"
client := &fakeClient{
createContainerFunc: func(
config *container.Config,
hostConfig *container.HostConfig,
networkingConfig *network.NetworkingConfig,
containerName string,
) (container.ContainerCreateCreatedBody, error) {
defer func() { responseCounter++ }()
switch responseCounter {
case 0:
return container.ContainerCreateCreatedBody{}, fakeNotFound{}
case 1:
return container.ContainerCreateCreatedBody{ID: containerID}, nil
default:
return container.ContainerCreateCreatedBody{}, errors.New("unexpected")
}
},
imageCreateFunc: func(parentReference string, options types.ImageCreateOptions) (io.ReadCloser, error) {
return ioutil.NopCloser(strings.NewReader("")), nil
},
infoFunc: func() (types.Info, error) {
return types.Info{IndexServerAddress: "http://indexserver"}, nil
},
}
cli := test.NewFakeCli(client)
config := &containerConfig{
Config: &container.Config{
Image: imageName,
},
HostConfig: &container.HostConfig{},
}
body, err := createContainer(context.Background(), cli, config, "name", runtime.GOOS)
require.NoError(t, err)
expected := container.ContainerCreateCreatedBody{ID: containerID}
assert.Equal(t, expected, *body)
stderr := cli.ErrBuffer().String()
assert.Contains(t, stderr, "Unable to find image 'does-not-exist-locally:latest' locally")
}
type fakeNotFound struct{}
func (f fakeNotFound) NotFound() bool { return true }
func (f fakeNotFound) Error() string { return "error fake not found" }