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package client // import "github.com/docker/docker/client"
import (
"bytes"
"context"
"errors"
"fmt"
"io"
"math/rand"
"net/http"
"strings"
"testing"
"time"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/errdefs"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
)
// TestSetHostHeader should set fake host for local communications, set real host
// for normal communications.
func TestSetHostHeader(t *testing.T) {
const testEndpoint = "/test"
testCases := []struct {
host string
expectedHost string
expectedURLHost string
}{
{
host: "unix:///var/run/docker.sock",
expectedHost: DummyHost,
expectedURLHost: "/var/run/docker.sock",
},
{
host: "npipe:////./pipe/docker_engine",
expectedHost: DummyHost,
expectedURLHost: "//./pipe/docker_engine",
},
{
host: "tcp://0.0.0.0:4243",
expectedHost: "",
expectedURLHost: "0.0.0.0:4243",
},
{
host: "tcp://localhost:4243",
expectedHost: "",
expectedURLHost: "localhost:4243",
},
}
for _, tc := range testCases {
tc := tc
t.Run(tc.host, func(t *testing.T) {
hostURL, err := ParseHostURL(tc.host)
assert.Check(t, err)
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
if !strings.HasPrefix(req.URL.Path, testEndpoint) {
return nil, fmt.Errorf("expected URL %q, got %q", testEndpoint, req.URL)
}
if req.Host != tc.expectedHost {
return nil, fmt.Errorf("wxpected host %q, got %q", tc.expectedHost, req.Host)
}
if req.URL.Host != tc.expectedURLHost {
return nil, fmt.Errorf("expected URL host %q, got %q", tc.expectedURLHost, req.URL.Host)
}
return &http.Response{
StatusCode: http.StatusOK,
Body: io.NopCloser(bytes.NewReader([]byte(""))),
}, nil
}),
proto: hostURL.Scheme,
addr: hostURL.Host,
basePath: hostURL.Path,
}
_, err = client.sendRequest(context.Background(), http.MethodGet, testEndpoint, nil, nil, nil)
assert.Check(t, err)
})
}
}
// TestPlainTextError tests the server returning an error in plain text for
// backwards compatibility with API versions <1.24. All other tests use
// errors returned as JSON
func TestPlainTextError(t *testing.T) {
client := &Client{
client: newMockClient(plainTextErrorMock(http.StatusInternalServerError, "Server error")),
}
_, err := client.ContainerList(context.Background(), container.ListOptions{})
assert.Check(t, is.ErrorType(err, errdefs.IsSystem))
}
func TestInfiniteError(t *testing.T) {
infinitR := rand.New(rand.NewSource(42))
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
resp := &http.Response{
StatusCode: http.StatusInternalServerError,
Header: http.Header{},
Body: io.NopCloser(infinitR),
}
return resp, nil
}),
}
_, err := client.Ping(context.Background())
assert.Check(t, is.ErrorContains(err, "request returned Internal Server Error"))
}
func TestCanceledContext(t *testing.T) {
const testEndpoint = "/test"
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
assert.Check(t, is.ErrorType(req.Context().Err(), context.Canceled))
return nil, context.Canceled
}),
}
ctx, cancel := context.WithCancel(context.Background())
cancel()
_, err := client.sendRequest(ctx, http.MethodGet, testEndpoint, nil, nil, nil)
assert.Check(t, is.ErrorType(err, errdefs.IsCancelled))
assert.Check(t, errors.Is(err, context.Canceled))
}
func TestDeadlineExceededContext(t *testing.T) {
const testEndpoint = "/test"
client := &Client{
client: newMockClient(func(req *http.Request) (*http.Response, error) {
assert.Check(t, is.ErrorType(req.Context().Err(), context.DeadlineExceeded))
return nil, context.DeadlineExceeded
}),
}
ctx, cancel := context.WithDeadline(context.Background(), time.Now())
defer cancel()
<-ctx.Done()
_, err := client.sendRequest(ctx, http.MethodGet, testEndpoint, nil, nil, nil)
assert.Check(t, is.ErrorType(err, errdefs.IsDeadline))
assert.Check(t, errors.Is(err, context.DeadlineExceeded))
}
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