diff --git a/autotests/CMakeLists.txt b/autotests/CMakeLists.txt
--- a/autotests/CMakeLists.txt
+++ b/autotests/CMakeLists.txt
@@ -1,10 +1,18 @@
-set(EXTRACTOR_TEST_SRCS
-    extractortest.cpp
-)
+include(ECMMarkAsTest)
 
 configure_file(config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h @ONLY)
 
-ecm_add_test(${EXTRACTOR_TEST_SRCS}
+ecm_add_test(extractortest.cpp
     TEST_NAME "extractortest"
     LINK_LIBRARIES Qt5::Test
 )
+ecm_add_test(filemetadatawidgettest.cpp
+    TEST_NAME "filemetadatawidgettest"
+    LINK_LIBRARIES KF5::KIOCore
+    KF5::KIOWidgets
+    KF5::KIOFileWidgets
+    KF5::BalooWidgets
+    KF5::FileMetaData 
+    Qt5::Test 
+    Qt5::Widgets
+)
diff --git a/autotests/filemetadatawidgettest.h b/autotests/filemetadatawidgettest.h
new file mode 100644
--- /dev/null
+++ b/autotests/filemetadatawidgettest.h
@@ -0,0 +1,44 @@
+/*
+ * This file is part of the KDE Baloo Project
+ * Copyright 2018  Michael Heidelbach <ottwolt@gmail.com>
+ * 
+ * This program 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 2 of
+ * the License or (at your option) version 3 or any later version
+ * accepted by the membership of KDE e.V. (or its successor approved
+ * by the membership of KDE e.V.), which shall act as a proxy
+ * defined in Section 14 of version 3 of the license.
+ * 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef FILEMETADATAWIDGETTEST_H
+#define FILEMETADATAWIDGETTEST_H
+
+#include <filemetadatawidget.h>
+
+class FileMetadataWidgetTest : public QObject
+{
+    Q_OBJECT
+private Q_SLOTS:
+    void initTestCase();
+    void init();
+    void cleanup();
+
+    void shouldSignalOnceWithoutFile();
+    void shouldSignalOnceWithEmptyFile();
+    void shouldSignalOnceFile();
+    void shouldSignalOnceFiles();
+
+private:
+     Baloo::FileMetaDataWidget*  m_widget;
+};
+
+#endif // FILEMETADATAWIDGETTEST_H
diff --git a/autotests/filemetadatawidgettest.cpp b/autotests/filemetadatawidgettest.cpp
new file mode 100644
--- /dev/null
+++ b/autotests/filemetadatawidgettest.cpp
@@ -0,0 +1,88 @@
+/*
+ * This file is part of the KDE Baloo Project
+ * Copyright 2018  Michael Heidelbach <ottwolt@gmail.com>
+ * 
+ * This program 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 2 of
+ * the License or (at your option) version 3 or any later version
+ * accepted by the membership of KDE e.V. (or its successor approved
+ * by the membership of KDE e.V.), which shall act as a proxy
+ * defined in Section 14 of version 3 of the license.
+ * 
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+#include "filemetadatawidgettest.h"
+
+#include <QObject>
+#include <KFileItem>
+#include <QTest>
+#include <QSignalSpy>
+#include <QMetaType>
+
+QTEST_MAIN(FileMetadataWidgetTest)
+
+void FileMetadataWidgetTest::initTestCase()
+{
+    qRegisterMetaType<KFileItemList>("KFileItemList");
+}
+
+void FileMetadataWidgetTest::init()
+{
+    m_widget = new Baloo::FileMetaDataWidget;
+}
+
+void FileMetadataWidgetTest::cleanup()
+{
+    delete m_widget;
+}
+
+void FileMetadataWidgetTest::shouldSignalOnceWithoutFile()
+{
+    QSignalSpy spy(m_widget, &Baloo::FileMetaDataWidget::metaDataRequestFinished);
+    m_widget->setItems(KFileItemList() << QUrl());
+    QCOMPARE(spy.count(), 1);
+    QCOMPARE(m_widget->items().count(), 0);
+}
+
+void FileMetadataWidgetTest::shouldSignalOnceWithEmptyFile()
+{
+    QSignalSpy spy(m_widget, &Baloo::FileMetaDataWidget::metaDataRequestFinished);
+    m_widget->setItems(KFileItemList());
+    QCOMPARE(spy.count(), 1);
+    QCOMPARE(m_widget->items().count(), 0);
+}
+
+void FileMetadataWidgetTest::shouldSignalOnceFile()
+{
+    QSignalSpy spy(m_widget, &Baloo::FileMetaDataWidget::metaDataRequestFinished);
+    m_widget->setItems(KFileItemList() 
+        << QUrl::fromLocalFile(QStringLiteral("%1/testtagged.m4a").arg(TESTS_SAMPLE_FILES_PATH))
+    );
+    QVERIFY(spy.wait());
+    QCOMPARE(spy.count(), 1);
+    QCOMPARE(m_widget->items().count(), 1);
+    
+}
+
+void FileMetadataWidgetTest::shouldSignalOnceFiles()
+{
+    QSignalSpy spy(m_widget, &Baloo::FileMetaDataWidget::metaDataRequestFinished);
+    m_widget->setItems(KFileItemList() 
+        << QUrl::fromLocalFile(QStringLiteral("%1/test.mp3").arg(TESTS_SAMPLE_FILES_PATH))
+        << QUrl::fromLocalFile(QStringLiteral("%1/testtagged.mp3").arg(TESTS_SAMPLE_FILES_PATH))
+        << QUrl::fromLocalFile(QStringLiteral("%1/testtagged.m4a").arg(TESTS_SAMPLE_FILES_PATH))
+    );
+    QVERIFY(spy.wait());
+    QCOMPARE(spy.count(), 1);
+    QCOMPARE(m_widget->items().count(), 3);
+    
+}
diff --git a/autotests/testtagged.m4a b/autotests/testtagged.m4a
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001

diff --git a/autotests/testtagged.mp3 b/autotests/testtagged.mp3
new file mode 100644
index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
GIT binary patch
literal 0
Hc$@<O00001

literal 0
Hc$@<O00001