1 files changed, 24 insertions, 0 deletions
diff --git a/src/imports/testlib/TestCase.qml b/src/imports/testlib/TestCase.qml
index 8bedad40e9..c736a1a93a 100644
--- a/src/imports/testlib/TestCase.qml
+++ b/src/imports/testlib/TestCase.qml
@@ -966,6 +966,9 @@ Item {
         \sa mouseRelease(), mouseClick(), mouseDoubleClick(), mouseDoubleClickSequence(), mouseMove(), mouseDrag(), mouseWheel()
     */
     function mousePress(item, x, y, button, modifiers, delay) {
+        if (!item)
+            qtest_fail("No item given to mousePress", 1)
+
         if (button === undefined)
             button = Qt.LeftButton
         if (modifiers === undefined)
@@ -997,6 +1000,9 @@ Item {
         \sa mousePress(), mouseClick(), mouseDoubleClick(), mouseDoubleClickSequence(), mouseMove(), mouseDrag(), mouseWheel()
     */
     function mouseRelease(item, x, y, button, modifiers, delay) {
+        if (!item)
+            qtest_fail("No item given to mouseRelease", 1)
+
         if (button === undefined)
             button = Qt.LeftButton
         if (modifiers === undefined)
@@ -1030,6 +1036,9 @@ Item {
         \sa mousePress(), mouseClick(), mouseDoubleClick(), mouseDoubleClickSequence(), mouseMove(), mouseRelease(), mouseWheel()
     */
     function mouseDrag(item, x, y, dx, dy, button, modifiers, delay) {
+        if (!item)
+            qtest_fail("No item given to mouseDrag", 1)
+
         if (item.x === undefined || item.y === undefined)
             return
         if (button === undefined)
@@ -1077,6 +1086,9 @@ Item {
         \sa mousePress(), mouseRelease(), mouseDoubleClick(), mouseDoubleClickSequence(), mouseMove(), mouseDrag(), mouseWheel()
     */
     function mouseClick(item, x, y, button, modifiers, delay) {
+        if (!item)
+            qtest_fail("No item given to mouseClick", 1)
+
         if (button === undefined)
             button = Qt.LeftButton
         if (modifiers === undefined)
@@ -1108,6 +1120,9 @@ Item {
         \sa mouseDoubleClickSequence(), mousePress(), mouseRelease(), mouseClick(), mouseMove(), mouseDrag(), mouseWheel()
     */
     function mouseDoubleClick(item, x, y, button, modifiers, delay) {
+        if (!item)
+            qtest_fail("No item given to mouseDoubleClick", 1)
+
         if (button === undefined)
             button = Qt.LeftButton
         if (modifiers === undefined)
@@ -1146,6 +1161,9 @@ Item {
         \sa mouseDoubleClick(), mousePress(), mouseRelease(), mouseClick(), mouseMove(), mouseDrag(), mouseWheel()
     */
     function mouseDoubleClickSequence(item, x, y, button, modifiers, delay) {
+        if (!item)
+            qtest_fail("No item given to mouseDoubleClickSequence", 1)
+
         if (button === undefined)
             button = Qt.LeftButton
         if (modifiers === undefined)
@@ -1175,6 +1193,9 @@ Item {
         \sa mousePress(), mouseRelease(), mouseClick(), mouseDoubleClick(), mouseDoubleClickSequence(), mouseDrag(), mouseWheel()
     */
     function mouseMove(item, x, y, delay, buttons) {
+        if (!item)
+            qtest_fail("No item given to mouseMove", 1)
+
         if (delay == undefined)
             delay = -1
         if (buttons == undefined)
@@ -1200,6 +1221,9 @@ Item {
         \sa mousePress(), mouseClick(), mouseDoubleClick(), mouseDoubleClickSequence(), mouseMove(), mouseRelease(), mouseDrag(), QWheelEvent::angleDelta()
     */
     function mouseWheel(item, x, y, xDelta, yDelta, buttons, modifiers, delay) {
+        if (!item)
+            qtest_fail("No item given to mouseWheel", 1)
+
         if (delay == undefined)
             delay = -1
         if (buttons == undefined)