Handle duration of zero in QML animators

Handle a duration of zero in animators using the same approach as
animations.

Task-number: QTBUG-39766
Change-Id: I1628292ad259ec5ec5d3bb0770440efa5fa6dad0
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/auto/qmltest/animators/tst_zeroduration.qml b/tests/auto/qmltest/animators/tst_zeroduration.qml
new file mode 100644
index 0000000000..83ce235f42
--- /dev/null
+++ b/tests/auto/qmltest/animators/tst_zeroduration.qml
@@ -0,0 +1,35 @@
+import QtQuick 2.2
+import QtTest 1.1
+
+Item {
+    id: root;
+    width: 200
+    height: 200
+
+    TestCase {
+        id: testCase
+        name: "animators-y"
+        when: box.y == 100
+        function test_endresult() {
+            compare(box.yChangeCounter, 1);
+            var image = grabImage(root);
+            verify(image.pixel(0, 100) == Qt.rgba(1, 0, 0));
+            verify(image.pixel(0, 99) == Qt.rgba(1, 1, 1)); // outside on the top
+        }
+    }
+
+    Box {
+        id: box
+
+        anchors.centerIn: undefined
+
+        YAnimator {
+            id: animation
+            target: box
+            from: 0;
+            to: 100
+            duration: 0
+            running: true
+        }
+    }
+}