diff --git a/addons/lspclient/tests/lsptestapp.cpp b/addons/lspclient/tests/lsptestapp.cpp
index c55740f73..3cc02ad17 100644
--- a/addons/lspclient/tests/lsptestapp.cpp
+++ b/addons/lspclient/tests/lsptestapp.cpp
@@ -1,104 +1,111 @@
 /* This file is part of the KDE project
  *
  *  Copyright (C) 2019 Mark Nauwelaerts <mark.nauwelaerts@gmail.com>
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public License
  *  along with this library; see the file COPYING.LIB.  If not, write to
  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  *  Boston, MA 02110-1301, USA.
  */
 
 #include "../lspclientserver.h"
 #include <iostream>
 
 #include <QCoreApplication>
 #include <QEventLoop>
 #include <QFile>
 #include <QTextStream>
 
 int main(int argc, char ** argv)
 {
     if (argc < 5)
         return -1;
 
     LSPClientServer lsp(QString::fromLatin1(argv[1]).split(QStringLiteral(" ")),
             QUrl(QString::fromLatin1(argv[2])));
 
     QCoreApplication app(argc, argv);
     QEventLoop q;
 
     auto state_h = [&lsp, &q] () {
         if (lsp.state() == LSPClientServer::State::Running)
             q.quit();
     };
     auto conn = QObject::connect(&lsp, &LSPClientServer::stateChanged, state_h);
     lsp.start();
     q.exec();
     QObject::disconnect(conn);
 
     auto document = QUrl(QString::fromLatin1(argv[3]));
 
     QFile file(document.path());
     if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
         return -1;
     QTextStream in(&file);
     QString content = in.readAll();
     lsp.didOpen(document, 0, content);
 
     auto ds_h = [&q] (const QList<LSPSymbolInformation> & syms) {
         std::cout << "symbol count: " << syms.length() << std::endl;
         q.quit();
     };
     lsp.documentSymbols(document, &app, ds_h);
     q.exec();
 
     auto position = QString::fromLatin1(argv[4]).split(QStringLiteral(" "));
     auto def_h = [&q] (const QList<LSPLocation> & defs) {
         std::cout << "definition count: " << defs.length() << std::endl;
         q.quit();
     };
     lsp.documentDefinition(document, {position[0].toInt(), position[1].toInt()}, &app, def_h);
     q.exec();
 
     auto comp_h = [&q] (const QList<LSPCompletionItem> & completions) {
         std::cout << "completion count: " << completions.length() << std::endl;
         q.quit();
     };
     lsp.documentCompletion(document, {position[0].toInt(), position[1].toInt()}, &app, comp_h);
     q.exec();
 
     auto sig_h = [&q] (const LSPSignatureHelp & help) {
         std::cout << "signature help count: " << help.signatures.length() << std::endl;
         q.quit();
     };
     lsp.signatureHelp(document, {position[0].toInt(), position[1].toInt()}, &app, sig_h);
     q.exec();
 
     auto hover_h = [&q] (const LSPHover & hover) {
         std::cout << "hover: " << hover.contents.value.toStdString() << std::endl;
         q.quit();
     };
     lsp.documentHover(document, {position[0].toInt(), position[1].toInt()}, &app, hover_h);
     q.exec();
 
     auto ref_h = [&q] (const QList<LSPLocation> & refs) {
         std::cout << "refs: " << refs.length() << std::endl;
         q.quit();
     };
     lsp.documentReferences(document, {position[0].toInt(), position[1].toInt()}, true, &app, ref_h);
     q.exec();
 
+    auto hl_h = [&q] (const QList<LSPDocumentHighlight> & hls) {
+        std::cout << "highlights: " << hls.length() << std::endl;
+        q.quit();
+    };
+    lsp.documentHighlight(document, {position[0].toInt(), position[1].toInt()}, &app, hl_h);
+    q.exec();
+
     // lsp.didOpen(document, 0, QStringLiteral("blah"));
     lsp.didChange(document, 1, QStringLiteral("foo"));
     lsp.didClose(document);
 }