moby--moby/integration/system/ping_test.go

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package system // import "github.com/docker/docker/integration/system"
import (
"net/http"
"strings"
"testing"
"github.com/docker/docker/internal/test/request"
"gotest.tools/assert"
)
func TestPingCacheHeaders(t *testing.T) {
defer setupTest(t)()
res, _, err := request.Get("/_ping")
assert.NilError(t, err)
assert.Equal(t, res.StatusCode, http.StatusOK)
assert.Equal(t, hdr(res, "Cache-Control"), "no-cache, no-store, must-revalidate")
assert.Equal(t, hdr(res, "Pragma"), "no-cache")
}
func hdr(res *http.Response, name string) string {
val, ok := res.Header[http.CanonicalHeaderKey(name)]
if !ok || len(val) == 0 {
return ""
}
return strings.Join(val, ", ")
}