diff --git a/sources/extsysmonsources/gputempsource.cpp b/sources/extsysmonsources/gputempsource.cpp
index e69ff7c..437c143 100644
--- a/sources/extsysmonsources/gputempsource.cpp
+++ b/sources/extsysmonsources/gputempsource.cpp
@@ -55,19 +55,19 @@ GPUTemperatureSource::~GPUTemperatureSource()
 
 QString GPUTemperatureSource::autoGpu()
 {
-        QString gpu = QString("disable");
-        QFile moduleFile(QString("/proc/modules"));
-        if (!moduleFile.open(QIODevice::ReadOnly))
-            return gpu;
-
-        QString output = moduleFile.readAll();
-        if (output.contains(QString("fglrx")))
-            gpu = QString("ati");
-        else if (output.contains(QString("nvidia")))
-            gpu = QString("nvidia");
-
-        qCInfo(LOG_ESM) << "Device" << gpu;
+    QString gpu = QString("disable");
+    QFile moduleFile(QString("/proc/modules"));
+    if (!moduleFile.open(QIODevice::ReadOnly))
         return gpu;
+
+    QString output = moduleFile.readAll();
+    if (output.contains(QString("fglrx")))
+        gpu = QString("ati");
+    else if (output.contains(QString("nvidia")))
+        gpu = QString("nvidia");
+
+    qCInfo(LOG_ESM) << "Device" << gpu;
+    return gpu;
 }
 
 
@@ -78,7 +78,7 @@ QVariant GPUTemperatureSource::data(QString source)
     if (source == QString("gpu/temperature"))
         run();
 
-    return m_value;
+    return m_values[source];
 }
 
 
@@ -140,7 +140,7 @@ void GPUTemperatureSource::updateValue()
                 continue;
             QString temp = str.remove(QString("<gpu_temp>"))
                                .remove(QString("C</gpu_temp>"));
-            m_value = temp.toFloat();
+            m_values[QString("gpu/temperature")] = temp.toFloat();
             break;
         }
     } else if (m_device == QString("ati")) {
@@ -148,8 +148,10 @@ void GPUTemperatureSource::updateValue()
             if (!str.contains(QString("Temperature")))
                 continue;
             QString temp = str.split(QChar(' '), QString::SkipEmptyParts).at(4);
-            m_value = temp.toFloat();
+            m_values[QString("gpu/temperature")] = temp.toFloat();
             break;
         }
     }
+
+    emit(dataReceived(m_values));
 }
diff --git a/sources/extsysmonsources/gputempsource.h b/sources/extsysmonsources/gputempsource.h
index 62332c2..0ebfc62 100644
--- a/sources/extsysmonsources/gputempsource.h
+++ b/sources/extsysmonsources/gputempsource.h
@@ -43,7 +43,7 @@ private:
     // configuration and values
     QString m_device;
     QProcess *m_process = nullptr;
-    QVariant m_value;
+    QVariantHash m_values;
 };
 
 
diff --git a/sources/test/testgputempsource.cpp b/sources/test/testgputempsource.cpp
new file mode 100644
index 0000000..29a8f36
--- /dev/null
+++ b/sources/test/testgputempsource.cpp
@@ -0,0 +1,64 @@
+/***************************************************************************
+ *   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 "testgputempsource.h"
+
+#include <QtTest>
+
+#include "awtestlibrary.h"
+#include "gputempsource.h"
+
+
+void TestGPUTemperatureSource::initTestCase()
+{
+    device = GPUTemperatureSource::autoGpu();
+    QVERIFY(!device.isEmpty());
+
+    gputempSource = new GPUTemperatureSource(this, QStringList() << device);
+}
+
+
+void TestGPUTemperatureSource::cleanupTestCase()
+{
+    delete gputempSource;
+}
+
+
+void TestGPUTemperatureSource::test_sources()
+{
+    QCOMPARE(gputempSource->sources(), QStringList() << source);
+}
+
+
+void TestGPUTemperatureSource::test_gputemp()
+{
+    if (device == QString("disable"))
+        QSKIP("Not supported device, test will be skipped");
+
+    QSignalSpy spy(gputempSource, SIGNAL(dataReceived(const QVariantHash &)));
+    float firstValue = gputempSource->data(source).toFloat();
+    QCOMPARE(firstValue, 0.0f);
+
+    QVERIFY(spy.wait(5000));
+    QVariantHash arguments = spy.takeFirst().at(0).toHash();
+    float secondValue = arguments[source].toFloat();
+    QVERIFY((secondValue >= temp.first) && (secondValue <= temp.second));
+}
+
+
+QTEST_MAIN(TestGPUTemperatureSource);
diff --git a/sources/test/testgputempsource.h b/sources/test/testgputempsource.h
new file mode 100644
index 0000000..f095066
--- /dev/null
+++ b/sources/test/testgputempsource.h
@@ -0,0 +1,47 @@
+/***************************************************************************
+ *   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 TESTGPUTEMPSOURCE_H
+#define TESTGPUTEMPSOURCE_H
+
+#include <QObject>
+
+
+class GPUTemperatureSource;
+
+class TestGPUTemperatureSource : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    // initialization
+    void initTestCase();
+    void cleanupTestCase();
+    // test
+    void test_sources();
+    void test_gputemp();
+
+private:
+    GPUTemperatureSource *gputempSource = nullptr;
+    QString device;
+    QString source = QString("gpu/temperature");
+    QPair<float, float> temp = QPair<float, float>(0.0f, 40.0f);
+};
+
+
+#endif /* TESTGPUTEMPSOURCE_H */