Skip (pass) each autotest if the corresponding handler not present

Add a check at initialization of each autotest, skipping it if the
relevant plugin is not installed. This is the same as in the
qtimagereader autotest in qtbase (SKIP_IF_UNSUPPORTED macro).

Reason for change: Not all format handlers are supported on all
platforms. Hence, the suite of autotests ("make check") should not
fail on account of a missing plugin.

Change-Id: Ic0f4da68a9527831f017db0f326afe6e631efd9e
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Liang Qi <liang.qi@theqtcompany.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/auto/mng/tst_qmng.cpp b/tests/auto/mng/tst_qmng.cpp
index 7e37d97..b82ece1 100644
--- a/tests/auto/mng/tst_qmng.cpp
+++ b/tests/auto/mng/tst_qmng.cpp
@@ -39,12 +39,19 @@ class tst_qmng: public QObject
     Q_OBJECT
 
 private slots:
+    void initTestCase();
     void readImage_data();
     void readImage();
     void readCorruptImage_data();
     void readCorruptImage();
 };
 
+void tst_qmng::initTestCase()
+{
+    if (!QImageReader::supportedImageFormats().contains("mng"))
+        QSKIP("The image format handler is not installed.");
+}
+
 void tst_qmng::readImage_data()
 {
     QTest::addColumn<QString>("fileName");