DockerCLI/cli/command/cli_test.go

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package command
import (
"bytes"
"context"
"crypto/x509"
"fmt"
"io/ioutil"
"net/http"
"os"
"runtime"
"testing"
cliconfig "github.com/docker/cli/cli/config"
"github.com/docker/cli/cli/config/configfile"
"github.com/docker/cli/cli/flags"
"github.com/docker/docker/api"
"github.com/docker/docker/api/types"
"github.com/docker/docker/client"
"github.com/pkg/errors"
"gotest.tools/assert"
is "gotest.tools/assert/cmp"
"gotest.tools/env"
"gotest.tools/fs"
)
func TestNewAPIClientFromFlags(t *testing.T) {
host := "unix://path"
if runtime.GOOS == "windows" {
host = "npipe://./"
}
opts := &flags.CommonOptions{Hosts: []string{host}}
configFile := &configfile.ConfigFile{
HTTPHeaders: map[string]string{
"My-Header": "Custom-Value",
},
}
apiclient, err := NewAPIClientFromFlags(opts, configFile)
assert.NilError(t, err)
assert.Check(t, is.Equal(host, apiclient.DaemonHost()))
expectedHeaders := map[string]string{
"My-Header": "Custom-Value",
"User-Agent": UserAgent(),
}
assert.Check(t, is.DeepEqual(expectedHeaders, apiclient.(*client.Client).CustomHTTPHeaders()))
assert.Check(t, is.Equal(api.DefaultVersion, apiclient.ClientVersion()))
}
func TestNewAPIClientFromFlagsForDefaultSchema(t *testing.T) {
host := ":2375"
opts := &flags.CommonOptions{Hosts: []string{host}}
configFile := &configfile.ConfigFile{
HTTPHeaders: map[string]string{
"My-Header": "Custom-Value",
},
}
apiclient, err := NewAPIClientFromFlags(opts, configFile)
assert.NilError(t, err)
assert.Check(t, is.Equal("tcp://localhost"+host, apiclient.DaemonHost()))
expectedHeaders := map[string]string{
"My-Header": "Custom-Value",
"User-Agent": UserAgent(),
}
assert.Check(t, is.DeepEqual(expectedHeaders, apiclient.(*client.Client).CustomHTTPHeaders()))
assert.Check(t, is.Equal(api.DefaultVersion, apiclient.ClientVersion()))
}
func TestNewAPIClientFromFlagsWithAPIVersionFromEnv(t *testing.T) {
customVersion := "v3.3.3"
defer env.Patch(t, "DOCKER_API_VERSION", customVersion)()
defer env.Patch(t, "DOCKER_HOST", ":2375")()
opts := &flags.CommonOptions{}
configFile := &configfile.ConfigFile{}
apiclient, err := NewAPIClientFromFlags(opts, configFile)
assert.NilError(t, err)
assert.Check(t, is.Equal(customVersion, apiclient.ClientVersion()))
}
func TestNewAPIClientFromFlagsWithHttpProxyEnv(t *testing.T) {
defer env.Patch(t, "HTTP_PROXY", "http://proxy.acme.com:1234")()
defer env.Patch(t, "DOCKER_HOST", "tcp://docker.acme.com:2376")()
opts := &flags.CommonOptions{}
configFile := &configfile.ConfigFile{}
apiclient, err := NewAPIClientFromFlags(opts, configFile)
assert.NilError(t, err)
transport, ok := apiclient.HTTPClient().Transport.(*http.Transport)
assert.Assert(t, ok)
assert.Assert(t, transport.Proxy != nil)
request, err := http.NewRequest(http.MethodGet, "tcp://docker.acme.com:2376", nil)
assert.NilError(t, err)
url, err := transport.Proxy(request)
assert.NilError(t, err)
assert.Check(t, is.Equal("http://proxy.acme.com:1234", url.String()))
}
type fakeClient struct {
client.Client
pingFunc func() (types.Ping, error)
version string
negotiated bool
}
func (c *fakeClient) Ping(_ context.Context) (types.Ping, error) {
return c.pingFunc()
}
func (c *fakeClient) ClientVersion() string {
return c.version
}
func (c *fakeClient) NegotiateAPIVersionPing(types.Ping) {
c.negotiated = true
}
func TestInitializeFromClient(t *testing.T) {
defaultVersion := "v1.55"
var testcases = []struct {
doc string
pingFunc func() (types.Ping, error)
expectedServer ServerInfo
negotiated bool
}{
{
doc: "successful ping",
pingFunc: func() (types.Ping, error) {
return types.Ping{Experimental: true, OSType: "linux", APIVersion: "v1.30"}, nil
},
expectedServer: ServerInfo{HasExperimental: true, OSType: "linux"},
negotiated: true,
},
{
doc: "failed ping, no API version",
pingFunc: func() (types.Ping, error) {
return types.Ping{}, errors.New("failed")
},
expectedServer: ServerInfo{HasExperimental: true},
},
{
doc: "failed ping, with API version",
pingFunc: func() (types.Ping, error) {
return types.Ping{APIVersion: "v1.33"}, errors.New("failed")
},
expectedServer: ServerInfo{HasExperimental: true},
negotiated: true,
},
}
for _, testcase := range testcases {
testcase := testcase
t.Run(testcase.doc, func(t *testing.T) {
apiclient := &fakeClient{
pingFunc: testcase.pingFunc,
version: defaultVersion,
}
cli := &DockerCli{client: apiclient}
cli.initializeFromClient()
assert.Check(t, is.DeepEqual(testcase.expectedServer, cli.serverInfo))
assert.Check(t, is.Equal(testcase.negotiated, apiclient.negotiated))
})
}
}
func TestExperimentalCLI(t *testing.T) {
defaultVersion := "v1.55"
var testcases = []struct {
doc string
configfile string
expectedExperimentalCLI bool
}{
{
doc: "default",
configfile: `{}`,
expectedExperimentalCLI: false,
},
{
doc: "experimental",
configfile: `{
"experimental": "enabled"
}`,
expectedExperimentalCLI: true,
},
}
for _, testcase := range testcases {
testcase := testcase
t.Run(testcase.doc, func(t *testing.T) {
dir := fs.NewDir(t, testcase.doc, fs.WithFile("config.json", testcase.configfile))
defer dir.Remove()
apiclient := &fakeClient{
version: defaultVersion,
pingFunc: func() (types.Ping, error) {
return types.Ping{Experimental: true, OSType: "linux", APIVersion: defaultVersion}, nil
},
}
cli := &DockerCli{client: apiclient, err: os.Stderr}
cliconfig.SetDir(dir.Path())
err := cli.Initialize(flags.NewClientOptions())
assert.NilError(t, err)
assert.Check(t, is.Equal(testcase.expectedExperimentalCLI, cli.ClientInfo().HasExperimental))
})
}
}
func TestGetClientWithPassword(t *testing.T) {
expected := "password"
var testcases = []struct {
doc string
password string
retrieverErr error
retrieverGiveup bool
newClientErr error
expectedErr string
}{
{
doc: "successful connect",
password: expected,
},
{
doc: "password retriever exhausted",
retrieverGiveup: true,
retrieverErr: errors.New("failed"),
expectedErr: "private key is encrypted, but could not get passphrase",
},
{
doc: "password retriever error",
retrieverErr: errors.New("failed"),
expectedErr: "failed",
},
{
doc: "newClient error",
newClientErr: errors.New("failed to connect"),
expectedErr: "failed to connect",
},
}
for _, testcase := range testcases {
testcase := testcase
t.Run(testcase.doc, func(t *testing.T) {
passRetriever := func(_, _ string, _ bool, attempts int) (passphrase string, giveup bool, err error) {
// Always return an invalid pass first to test iteration
switch attempts {
case 0:
return "something else", false, nil
default:
return testcase.password, testcase.retrieverGiveup, testcase.retrieverErr
}
}
newClient := func(currentPassword string) (client.APIClient, error) {
if testcase.newClientErr != nil {
return nil, testcase.newClientErr
}
if currentPassword == expected {
return &client.Client{}, nil
}
return &client.Client{}, x509.IncorrectPasswordError
}
_, err := getClientWithPassword(passRetriever, newClient)
if testcase.expectedErr != "" {
assert.ErrorContains(t, err, testcase.expectedErr)
return
}
assert.NilError(t, err)
})
}
}
func TestNewDockerCliAndOperators(t *testing.T) {
// Test default operations and also overriding default ones
cli, err := NewDockerCli(
WithContentTrust(true),
)
assert.NilError(t, err)
// Check streams are initialized
assert.Check(t, cli.In() != nil)
assert.Check(t, cli.Out() != nil)
assert.Check(t, cli.Err() != nil)
assert.Equal(t, cli.ContentTrustEnabled(), true)
// Apply can modify a dockerCli after construction
inbuf := bytes.NewBuffer([]byte("input"))
outbuf := bytes.NewBuffer(nil)
errbuf := bytes.NewBuffer(nil)
err = cli.Apply(
WithInputStream(ioutil.NopCloser(inbuf)),
WithOutputStream(outbuf),
WithErrorStream(errbuf),
)
assert.NilError(t, err)
// Check input stream
inputStream, err := ioutil.ReadAll(cli.In())
assert.NilError(t, err)
assert.Equal(t, string(inputStream), "input")
// Check output stream
fmt.Fprintf(cli.Out(), "output")
outputStream, err := ioutil.ReadAll(outbuf)
assert.NilError(t, err)
assert.Equal(t, string(outputStream), "output")
// Check error stream
fmt.Fprintf(cli.Err(), "error")
errStream, err := ioutil.ReadAll(errbuf)
assert.NilError(t, err)
assert.Equal(t, string(errStream), "error")
}
func TestInitializeShouldAlwaysCreateTheContextStore(t *testing.T) {
cli, err := NewDockerCli()
assert.NilError(t, err)
assert.NilError(t, cli.Initialize(flags.NewClientOptions(), WithInitializeClient(func(cli *DockerCli) (client.APIClient, error) {
return client.NewClientWithOpts()
})))
assert.Check(t, cli.ContextStore() != nil)
}