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moby--moby/api/server/middleware/version_test.go
Sebastiaan van Stijn e9dac5ef5e
Always return version and server headers
If a 400 error is returned due to an API version mismatch, no
version and server-identification headers were returned by the API.

All information in these headers is "static", so there is no
reason to omit the information in case of an error being
returned.

This patch updates the version middleware to always
return the headers.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2017-10-11 22:06:43 +02:00

112 lines
3.3 KiB
Go

package middleware
import (
"net/http"
"net/http/httptest"
"runtime"
"strings"
"testing"
"github.com/docker/docker/api/server/httputils"
"github.com/stretchr/testify/assert"
"golang.org/x/net/context"
)
func TestVersionMiddleware(t *testing.T) {
handler := func(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if httputils.VersionFromContext(ctx) == "" {
t.Fatal("Expected version, got empty string")
}
return nil
}
defaultVersion := "1.10.0"
minVersion := "1.2.0"
m := NewVersionMiddleware(defaultVersion, defaultVersion, minVersion)
h := m.WrapHandler(handler)
req, _ := http.NewRequest("GET", "/containers/json", nil)
resp := httptest.NewRecorder()
ctx := context.Background()
if err := h(ctx, resp, req, map[string]string{}); err != nil {
t.Fatal(err)
}
}
func TestVersionMiddlewareVersionTooOld(t *testing.T) {
handler := func(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if httputils.VersionFromContext(ctx) == "" {
t.Fatal("Expected version, got empty string")
}
return nil
}
defaultVersion := "1.10.0"
minVersion := "1.2.0"
m := NewVersionMiddleware(defaultVersion, defaultVersion, minVersion)
h := m.WrapHandler(handler)
req, _ := http.NewRequest("GET", "/containers/json", nil)
resp := httptest.NewRecorder()
ctx := context.Background()
vars := map[string]string{"version": "0.1"}
err := h(ctx, resp, req, vars)
if !strings.Contains(err.Error(), "client version 0.1 is too old. Minimum supported API version is 1.2.0") {
t.Fatalf("Expected too old client error, got %v", err)
}
}
func TestVersionMiddlewareVersionTooNew(t *testing.T) {
handler := func(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if httputils.VersionFromContext(ctx) == "" {
t.Fatal("Expected version, got empty string")
}
return nil
}
defaultVersion := "1.10.0"
minVersion := "1.2.0"
m := NewVersionMiddleware(defaultVersion, defaultVersion, minVersion)
h := m.WrapHandler(handler)
req, _ := http.NewRequest("GET", "/containers/json", nil)
resp := httptest.NewRecorder()
ctx := context.Background()
vars := map[string]string{"version": "9999.9999"}
err := h(ctx, resp, req, vars)
if !strings.Contains(err.Error(), "client version 9999.9999 is too new. Maximum supported API version is 1.10.0") {
t.Fatalf("Expected too new client error, got %v", err)
}
}
func TestVersionMiddlewareWithErrorsReturnsHeaders(t *testing.T) {
handler := func(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
if httputils.VersionFromContext(ctx) == "" {
t.Fatal("Expected version, got empty string")
}
return nil
}
defaultVersion := "1.10.0"
minVersion := "1.2.0"
m := NewVersionMiddleware(defaultVersion, defaultVersion, minVersion)
h := m.WrapHandler(handler)
req, _ := http.NewRequest("GET", "/containers/json", nil)
resp := httptest.NewRecorder()
ctx := context.Background()
vars := map[string]string{"version": "0.1"}
err := h(ctx, resp, req, vars)
assert.Error(t, err)
hdr := resp.Result().Header
assert.Contains(t, hdr.Get("Server"), "Docker/"+defaultVersion)
assert.Contains(t, hdr.Get("Server"), runtime.GOOS)
assert.Equal(t, hdr.Get("API-Version"), defaultVersion)
assert.Equal(t, hdr.Get("OSType"), runtime.GOOS)
}