Fix qcamerabackend autotest for gstreamer

Mainly fixes in the auto test to ensure it works correctly.
Add one log message to the image capture backend in case we
fail to save to a file.

Pick-to: 6.2
Change-Id: Ie631ebfdd45d16a16a5b7e22d8bbe00db78afd6f
Reviewed-by: Piotr Srebrny <piotr.srebrny@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 7 insertions, 4 deletions

diff --git a/tests/auto/integration/qcamerabackend/tst_qcamerabackend.cpp b/tests/auto/integration/qcamerabackend/tst_qcamerabackend.cpp
index 70f68e2ab..4bad5bbcf 100644
--- a/tests/auto/integration/qcamerabackend/tst_qcamerabackend.cpp
+++ b/tests/auto/integration/qcamerabackend/tst_qcamerabackend.cpp
@@ -322,8 +322,9 @@ void tst_QCameraBackend::testCameraFormat()
     camera.stop();
 
     spy.clear();
-    camera.setCameraDevice({});
-    QCOMPARE(spy.count(), 1);
+    // Shouldn't change anything as it's the same device
+    camera.setCameraDevice(device);
+    QCOMPARE(spy.count(), 0);
 }
 
 void tst_QCameraBackend::testCameraCapture()
@@ -450,7 +451,9 @@ void tst_QCameraBackend::testCameraCaptureMetadata()
 
     QTRY_VERIFY(imageCapture.isReadyForCapture());
 
-    int id = imageCapture.captureToFile(QString::fromLatin1("/dev/null"));
+    QTemporaryDir dir;
+    auto tmpFile = dir.filePath("testImage");
+    int id = imageCapture.captureToFile(tmpFile);
     QTRY_VERIFY(!savedSignal.isEmpty());
     QVERIFY(!metadataSignal.isEmpty());
     QCOMPARE(metadataSignal.first().first().toInt(), id);
@@ -465,7 +468,7 @@ void tst_QCameraBackend::testExposureCompensation()
     QCamera camera;
     session.setCamera(&camera);
 
-    QSignalSpy exposureCompensationSignal(&camera, SIGNAL(exposureCompensationChanged(qreal)));
+    QSignalSpy exposureCompensationSignal(&camera, SIGNAL(exposureCompensationChanged(float)));
 
     //it should be possible to set exposure parameters in Unloaded state
     QCOMPARE(camera.exposureCompensation(), 0.);