From 0035b3f36ff9a526a4d17298f45a224fd5f421c3 Mon Sep 17 00:00:00 2001
From: Victor Rodriguez Gil <mrpatan@gmail.com>
Date: Mon, 13 Jun 2016 23:04:55 +0000
Subject: [PATCH] Test that shows the bug #890, fails

---
 test/modules/viewport.js | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/test/modules/viewport.js b/test/modules/viewport.js
index f39473cf..fb94d11d 100644
--- a/test/modules/viewport.js
+++ b/test/modules/viewport.js
@@ -437,8 +437,8 @@
             viewport.applyConstraints(true);
             var bounds = viewport.getBounds();
             Util.assertRectangleEquals(
-                bounds,
                 new OpenSeadragon.Rect(0.7, 0.7, 1, 1),
+                bounds,
                 EPSILON,
                 "Viewport.applyConstraints should move viewport.");
             start();
@@ -447,6 +447,27 @@
         viewer.open(DZI_PATH);
     });
 
+    asyncTest('applyConstraints with visibilityRatio = 1 shouldn\'t bounce around', function() {
+        var openHandler = function() {
+            viewer.removeHandler('open', openHandler);
+            var viewport = viewer.viewport;
+
+            viewport.visibilityRatio = 1;
+            viewport.zoomTo(0.5, undefined, true);
+            viewport.panBy(new OpenSeadragon.Point(0.75, 0), true);
+            viewport.applyConstraints(true);
+            var bounds = viewport.getBounds();
+            Util.assertRectangleEquals(
+                new OpenSeadragon.Rect(-0.5, 1, 2, 2),
+                bounds,
+                EPSILON,
+                "Viewport.applyConstraints should move viewport to the center, not to a side.");
+            start();
+        };
+        viewer.addHandler('open', openHandler);
+        viewer.open(TALL_PATH);
+    });
+
     asyncTest('applyConstraints with rotation', function() {
         var openHandler = function() {
             viewer.removeHandler('open', openHandler);