diff --git a/sources/test/CMakeLists.txt b/sources/test/CMakeLists.txt
index e8a2804..b6032f0 100644
--- a/sources/test/CMakeLists.txt
+++ b/sources/test/CMakeLists.txt
@@ -23,7 +23,8 @@ set(LIBRARY_TEST_SET ${SUBPROJECT}-awtest ${PROJECT_LIBRARY} ${Qt_LIBRARIES} ${Q
 ## modules
 set(TEST_MODULES
         abstractextitem extquotes extscript extupgrade extweather
-        abstractformatter datetimeformatter floatformatter noformatter scriptformatter)
+        abstractformatter datetimeformatter floatformatter noformatter scriptformatter
+        extitemaggregator)
 foreach (TEST_MODULE ${TEST_MODULES})
     set(${TEST_MODULE}_HEADERS test${TEST_MODULE}.h)
     set(${TEST_MODULE}_SOURCES test${TEST_MODULE}.cpp)
diff --git a/sources/test/testextitemaggregator.cpp b/sources/test/testextitemaggregator.cpp
new file mode 100644
index 0000000..ddd681f
--- /dev/null
+++ b/sources/test/testextitemaggregator.cpp
@@ -0,0 +1,48 @@
+/***************************************************************************
+ *   This file is part of awesome-widgets                                  *
+ *                                                                         *
+ *   awesome-widgets is free software: you can redistribute it and/or      *
+ *   modify it under the terms of the GNU General Public License as        *
+ *   published by the Free Software Foundation, either version 3 of the    *
+ *   License, or (at your option) any later version.                       *
+ *                                                                         *
+ *   awesome-widgets 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 General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with awesome-widgets. If not, see http://www.gnu.org/licenses/  *
+ ***************************************************************************/
+
+
+#include "testextitemaggregator.h"
+
+#include <QtTest>
+
+#include "awnoformatter.h"
+#include "awtestlibrary.h"
+#include "extitemaggregator.h"
+
+
+void TestExtItemAggregator::initTestCase()
+{
+    aggregator = new ExtItemAggregator<AWNoFormatter>(nullptr, type);
+}
+
+
+void TestExtItemAggregator::cleanupTestCase()
+{
+    delete aggregator;
+}
+
+
+void TestExtItemAggregator::test_values()
+{
+    QCOMPARE(aggregator->type(), type);
+    QCOMPARE(aggregator->uniqNumber(), 0);
+    QCOMPARE(aggregator->items().count(), 0);
+}
+
+
+QTEST_MAIN(TestExtItemAggregator);
diff --git a/sources/test/testextitemaggregator.h b/sources/test/testextitemaggregator.h
new file mode 100644
index 0000000..e5fc449
--- /dev/null
+++ b/sources/test/testextitemaggregator.h
@@ -0,0 +1,44 @@
+/***************************************************************************
+ *   This file is part of awesome-widgets                                  *
+ *                                                                         *
+ *   awesome-widgets is free software: you can redistribute it and/or      *
+ *   modify it under the terms of the GNU General Public License as        *
+ *   published by the Free Software Foundation, either version 3 of the    *
+ *   License, or (at your option) any later version.                       *
+ *                                                                         *
+ *   awesome-widgets 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 General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with awesome-widgets. If not, see http://www.gnu.org/licenses/  *
+ ***************************************************************************/
+
+
+#ifndef TESTEXTITEMAGGREGATOR_H
+#define TESTEXTITEMAGGREGATOR_H
+
+#include <QObject>
+
+class AWNoFormatter;
+template<class T> class ExtItemAggregator;
+
+class TestExtItemAggregator : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    // initialization
+    void initTestCase();
+    void cleanupTestCase();
+    // test
+    void test_values();
+
+private:
+    ExtItemAggregator<AWNoFormatter> *aggregator = nullptr;
+    QString type = QString("tmp");
+};
+
+
+#endif /* TESTEXTITEMAGGREGATOR_H */