body:            []byte("doctype html><p>Hello</p>"),
		},
		{
			name:            "empty but set content-encoding",
			contentEncoding: "",
			wantContentType: "audio/mpeg",
			body:            []byte("ID3"),
		},
	}

	for _, tt := range settings {
		t.Run(tt.name, func(t *testing.T) {
			cst := newClientServerTest(t, mode, HandlerFunc(func(rw ResponseWriter, r *Request) {
				if tt.contentEncoding != nil {