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package command
import (
"bytes"
"context"
"fmt"
"io"
"net/http"
"net/http/httptest"
"os"
"runtime"
"strings"
"testing"
"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/v3/assert"
"gotest.tools/v3/env"
"gotest.tools/v3/fs"
)
func TestNewAPIClientFromFlags(t *testing.T) {
host := "unix://path"
if runtime.GOOS == "windows" {
host = "npipe://./"
}
opts := &flags.CommonOptions{Hosts: []string{host}}
apiClient, err := NewAPIClientFromFlags(opts, &configfile.ConfigFile{})
assert.NilError(t, err)
assert.Equal(t, apiClient.DaemonHost(), host)
assert.Equal(t, apiClient.ClientVersion(), api.DefaultVersion)
}
func TestNewAPIClientFromFlagsForDefaultSchema(t *testing.T) {
host := ":2375"
slug := "tcp://localhost"
if runtime.GOOS == "windows" {
slug = "tcp://127.0.0.1"
}
opts := &flags.CommonOptions{Hosts: []string{host}}
apiClient, err := NewAPIClientFromFlags(opts, &configfile.ConfigFile{})
assert.NilError(t, err)
assert.Equal(t, apiClient.DaemonHost(), slug+host)
assert.Equal(t, apiClient.ClientVersion(), api.DefaultVersion)
}
func TestNewAPIClientFromFlagsWithCustomHeaders(t *testing.T) {
var received map[string]string
ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
received = map[string]string{
"My-Header": r.Header.Get("My-Header"),
"User-Agent": r.Header.Get("User-Agent"),
}
_, _ = w.Write([]byte("OK"))
}))
defer ts.Close()
host := strings.Replace(ts.URL, "http://", "tcp://", 1)
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.Equal(t, apiClient.DaemonHost(), host)
assert.Equal(t, apiClient.ClientVersion(), api.DefaultVersion)
// verify User-Agent is not appended to the configfile. see https://github.com/docker/cli/pull/2756
assert.DeepEqual(t, configFile.HTTPHeaders, map[string]string{"My-Header": "Custom-Value"})
expectedHeaders := map[string]string{
"My-Header": "Custom-Value",
"User-Agent": UserAgent(),
}
_, err = apiClient.Ping(context.Background())
assert.NilError(t, err)
assert.DeepEqual(t, received, expectedHeaders)
}
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.Equal(t, apiclient.ClientVersion(), customVersion)
}
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.DeepEqual(t, cli.ServerInfo(), testcase.expectedServer)
assert.Equal(t, apiclient.negotiated, testcase.negotiated)
})
}
}
// The CLI no longer disables/hides experimental CLI features, however, we need
// to verify that existing configuration files do not break
func TestExperimentalCLI(t *testing.T) {
defaultVersion := "v1.55"
var testcases = []struct {
doc string
configfile string
}{
{
doc: "default",
configfile: `{}`,
},
{
doc: "experimental",
configfile: `{
"experimental": "enabled"
}`,
},
}
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}
config.SetDir(dir.Path())
err := cli.Initialize(flags.NewClientOptions())
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(io.NopCloser(inbuf)),
WithOutputStream(outbuf),
WithErrorStream(errbuf),
)
assert.NilError(t, err)
// Check input stream
inputStream, err := io.ReadAll(cli.In())
assert.NilError(t, err)
assert.Equal(t, string(inputStream), "input")
// Check output stream
fmt.Fprintf(cli.Out(), "output")
outputStream, err := io.ReadAll(outbuf)
assert.NilError(t, err)
assert.Equal(t, string(outputStream), "output")
// Check error stream
fmt.Fprintf(cli.Err(), "error")
errStream, err := io.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)
}