diff -r dee5afe5301f -r 3f74d0d4af4c tests/auto/qimagereader/tst_qimagereader.cpp
--- a/tests/auto/qimagereader/tst_qimagereader.cpp	Mon Mar 15 12:43:09 2010 +0200
+++ b/tests/auto/qimagereader/tst_qimagereader.cpp	Thu Apr 08 14:19:33 2010 +0300
@@ -142,6 +142,7 @@
     void gifHandlerBugs();
     void animatedGif();
     void gifImageCount();
+    void gifLoopCount();
 #endif
 
     void readCorruptImage_data();
@@ -765,6 +766,8 @@
         QVERIFY(io.canRead());
         QImage greenFrame = io.read();
 
+        QVERIFY(io.imageCount() == 4);
+
         QVERIFY(io.canRead());
         QImage blueFrame = io.read();
 
@@ -876,7 +879,25 @@
         QCOMPARE(blueFrame.size(), QSize(64,64));
         QVERIFY(emptyFrame.isNull());
     }
+    {
+        QImageReader io(":images/trolltech.gif");
+        QVERIFY(io.imageCount() == 34);
+        QVERIFY(io.size() == QSize(128,64));
+    }
 }
+
+void tst_QImageReader::gifLoopCount()
+{
+    {
+        QImageReader io(":images/qt-gif-anim.gif");
+        QCOMPARE(io.loopCount(), -1); // infinite loop
+    }
+    {
+        QImageReader io(":images/qt-gif-noanim.gif");
+        QCOMPARE(io.loopCount(), 0); // no loop
+    }
+}
+
 #endif
 
 class Server : public QObject
@@ -1612,6 +1633,35 @@
         QVERIFY(reader.canRead());
         QVERIFY(!reader.read().isNull());
     }
+
+#ifdef QTEST_HAVE_JPEG
+    {
+        QImageReader io(prefix + "YCbCr_rgb.jpg");
+        io.setAutoDetectImageFormat(false);
+        // This should fail since no format string is given
+        QImage image;
+        QVERIFY(!io.read(&image));
+    }
+    {
+        QImageReader io(prefix + "YCbCr_rgb.jpg", "jpg");
+        io.setAutoDetectImageFormat(false);
+        QImage image;
+        QVERIFY(io.read(&image));
+    }
+#endif
+    {
+        QImageReader io(prefix + "tst7.png");
+        io.setAutoDetectImageFormat(false);
+        // This should fail since no format string is given
+        QImage image;
+        QVERIFY(!io.read(&image));
+    }
+    {
+        QImageReader io(prefix + "tst7.png", "png");
+        io.setAutoDetectImageFormat(false);
+        QImage image;
+        QVERIFY(io.read(&image));
+    }
 }
 
 void tst_QImageReader::fileNameProbing()
@@ -1641,10 +1691,16 @@
 {
     QFETCH(QString, fileName);
 
+    static int enteredCount = 0;    // Used for better error diagnostics if something fails. We
+    static int loadFailCount = 0;   // don't know if the reason load() fails is that the plugin
+                                    // does not exist or because of a bug in the plugin. But if at
+                                    // least one file succeeded we know that the plugin was built.
+                                    // The other failures are then real failures.
     QImage icoImg;
     const QString inputFileName(QString::fromAscii("images/%1").arg(fileName));
     QFileInfo fi(inputFileName);
 
+    ++enteredCount;
     // might fail if the plugin does not exist, which is ok.
     if (icoImg.load(inputFileName)) {
         icoImg = icoImg.convertToFormat(QImage::Format_ARGB32_Premultiplied);
@@ -1658,6 +1714,13 @@
         QCOMPARE(int(baseImg.format()), int(icoImg.format()));
         QCOMPARE(baseImg, icoImg);
 #endif
+    } else {
+        ++loadFailCount;
+        if (enteredCount != loadFailCount) {
+            QFAIL("Plugin is built, but some did not load properly");
+        } else {
+            qWarning("loading failed, check if ico plugin is built");
+        }
     }
 }