Index: pimcommon/src/widgets/autotests/CMakeLists.txt
===================================================================
--- pimcommon/src/widgets/autotests/CMakeLists.txt
+++ pimcommon/src/widgets/autotests/CMakeLists.txt
@@ -1,5 +1,12 @@
-ecm_add_test(kactionmenuchangecasetest.cpp ../kactionmenuchangecase.cpp
-    TEST_NAME kactionmenuchangecasetest
-    NAME_PREFIX pimcommon-widget
-    LINK_LIBRARIES Qt5::Test Qt5::Gui KF5::WidgetsAddons KF5::I18n KF5::XmlGui KF5::PimCommon
-)
+# convenience macro to add qtest unit tests
+macro(pimcommon_widget_unittest _source)
+    get_filename_component(_name ${_source} NAME_WE)
+    ecm_add_test(${_source}
+        TEST_NAME ${_name}
+        NAME_PREFIX "pimcommon_widget"
+        LINK_LIBRARIES Qt5::Test Qt5::Gui KF5::WidgetsAddons KF5::I18n KF5::XmlGui KF5::PimCommon KF5::Completion
+    )
+endmacro ()
+
+pimcommon_widget_unittest(kactionmenuchangecasetest.cpp)
+pimcommon_widget_unittest(lineeditwithkeywordstest.cpp)
Index: pimcommon/src/widgets/autotests/lineeditwithkeywordstest.cpp
===================================================================
--- /dev/null
+++ pimcommon/src/widgets/autotests/lineeditwithkeywordstest.cpp
@@ -0,0 +1,58 @@
+#include "pimcommon/lineeditwithkeywords.h"
+#include "qtest.h"
+#include "klineedit.h"
+#include <QObject>
+
+using namespace PimCommon;
+
+class LineEditWithKeywordsTest : public QObject
+{
+    Q_OBJECT
+private Q_SLOTS:
+    void shouldHaveDefaultValue()
+    {
+        LineEditWithKeywords lineEdit;
+        QVERIFY(lineEdit.text().isEmpty());
+        KCompletion *comp = lineEdit.completionObject();
+        QVERIFY(!comp->items().isEmpty());
+    }
+
+    void shouldBeAlwaysSameList()
+    {
+        LineEditWithKeywords lineEdit;
+        QStringList list1;
+        list1 << lineEdit.completionObject()->items();
+
+        LineEditWithKeywords lineEdit2;
+        QStringList list2;
+        list2 << lineEdit2.completionObject()->items();
+        QCOMPARE(list1,list2);
+    }
+
+    void shouldAddNewWord()
+    {
+        LineEditWithKeywords lineEdit;
+        KCompletion *comp = lineEdit.completionObject();
+
+        QVERIFY(!comp->items().contains(QStringLiteral("word1")));
+        int nb = comp->items().size();
+        comp->addItem(QStringLiteral("word1"));
+        QCOMPARE(comp->items().size(),nb+1);
+        QVERIFY(comp->items().contains(QStringLiteral("word1")));
+    }
+
+    void shouldHaveDefaultListAfterClearHistory()
+    {
+        LineEditWithKeywords lineEdit;
+        KCompletion *comp = lineEdit.completionObject();
+        QMetaObject::invokeMethod(&lineEdit, "slotClearHistory");
+
+        LineEditWithKeywords lineEdit2;
+        KCompletion *comp2 = lineEdit2.completionObject();
+        QVERIFY(!comp->items().isEmpty());
+        QCOMPARE(comp->items(),comp2->items());
+    }
+};
+
+QTEST_MAIN(LineEditWithKeywordsTest)
+#include "lineeditwithkeywordstest.moc"