tests := []struct {
		name     string
		wantCode int
		proxyID  string
	}{
		{
			name:     "dumps most recent proxy with 200",
			proxyID:  "test.default",
			wantCode: 200,
		},
		{
			name:     "returns 404 if proxy not found",
			proxyID:  "not-found",
			wantCode: 404,
		},
		{
			name:     "returns 400 if no proxyID",
			proxyID:  "",
			wantCode: 400,
		},
	}

	dt := newTransportDialTester(t, http1Mode)

	// First request creates a new connection.
	rt1 := dt.roundTrip()
	c1 := dt.wantDial()
	c1.finish(nil)
	rt1.wantDone(c1)
	rt1.finish()

	// Second request reuses the first connection.
	rt2 := dt.roundTrip()
	rt2.wantDone(c1)
	rt2.finish()
}

func TestTransportPoolConnCannotReuseConnectionInUse(t *testing.T) {
	dt := newTransportDialTester(t, http1Mode)

			slurp, err := io.ReadAll(got.Body)
			if err != nil {
				t.Errorf("ReadAll: %v", err)
			}
			if string(slurp) != tt.wantBody {
				t.Errorf("Body = %q; want %q", slurp, tt.wantBody)
			}
			tt.want = tt.want.WithContext(context.Background())
			got.Body = nil // before DeepEqual
			if !reflect.DeepEqual(got.URL, tt.want.URL) {