return func(ts *httptest.Server) {
		ts.Config.ErrorLog = lg
	}
}

// newClientServerTest creates and starts an httptest.Server.
//
// The mode parameter selects the implementation to test:
// HTTP/1, HTTP/2, etc. Tests using newClientServerTest should use
// the 'run' function, which will start a subtests for each tested mode.
//

	"time"
)

func TestResponseControllerFlush(t *testing.T) { run(t, testResponseControllerFlush) }
func testResponseControllerFlush(t *testing.T, mode testMode) {
	continuec := make(chan struct{})
	cst := newClientServerTest(t, mode, HandlerFunc(func(w ResponseWriter, r *Request) {
		ctl := NewResponseController(w)
		w.Write([]byte("one"))
		if err := ctl.Flush(); err != nil {
			t.Errorf("ctl.Flush() = %v, want nil", err)
			return
		}

	run(t, testMaxInt64ForMultipartFormMaxMemoryOverflow)
}
func testMaxInt64ForMultipartFormMaxMemoryOverflow(t *testing.T, mode testMode) {
	payloadSize := 1 << 10
	cst := newClientServerTest(t, mode, HandlerFunc(func(rw ResponseWriter, req *Request) {
		// The combination of:
		//      MaxInt64 + payloadSize + (internal spare of 10MiB)
		// triggers the overflow. See issue https://golang.org/issue/40430/