From a31587df2f9a694d0ad090249ee013b0155a1bbb Mon Sep 17 00:00:00 2001
From: Nelson Campos <ncampos@criteriamarathon.com>
Date: Tue, 17 Apr 2018 16:23:21 +0100
Subject: [PATCH] Adds tests about flip methods

---
 src/viewport.js          |  3 ---
 test/modules/viewport.js | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/src/viewport.js b/src/viewport.js
index a3e207b8..dec8513f 100644
--- a/src/viewport.js
+++ b/src/viewport.js
@@ -881,7 +881,6 @@ $.Viewport.prototype = {
         if (!this.viewer || !this.viewer.drawer.canRotate()) {
             return this;
         }
-
         this.degrees = $.positiveModulo(degrees, 360);
         this._setContentBounds(
             this.viewer.world.getHomeBounds(),
@@ -1531,7 +1530,6 @@ $.Viewport.prototype = {
       return this;
     },
 
-
     /**
      * Gets flip state stored on viewport.
      * @function
@@ -1541,7 +1539,6 @@ $.Viewport.prototype = {
       return this.flipped;
     },
 
-
     /**
      * Sets flip state according to the state input argument.
      * @function
diff --git a/test/modules/viewport.js b/test/modules/viewport.js
index bebe7d77..abc1306f 100644
--- a/test/modules/viewport.js
+++ b/test/modules/viewport.js
@@ -1140,4 +1140,43 @@
         });
     });
 
+    QUnit.test('toggleFlipState', function(assert) {
+      var done = assert.async();
+      var openHandler = function(event) {
+          viewer.removeHandler('open', openHandler);
+          var viewport = viewer.viewport;
+
+          assert.deepEqual(viewport.getFlip(), false, "Get original flip state should be false");
+
+          viewport.toggleFlip();
+          assert.deepEqual(viewport.getFlip(), true, "Toggling flip state variable, viewport should be true");
+
+          viewport.toggleFlip();
+          assert.deepEqual(viewport.getFlip(), false, "Toggling back flip state variable, viewport should be false again");
+
+          done();
+      };
+      viewer.addHandler('open', openHandler);
+      viewer.open(DZI_PATH);
+    });
+
+    QUnit.test('setFlipState', function(assert) {
+      var done = assert.async();
+      var openHandler = function(event) {
+          viewer.removeHandler('open', openHandler);
+          var viewport = viewer.viewport;
+
+          assert.deepEqual(viewport.getFlip(), false, "Get original flip state should be false");
+
+          viewport.setFlip(true);
+          assert.deepEqual(viewport.getFlip(), true, "Setting flip state variable should be true");
+
+          viewport.setFlip(false);
+          assert.deepEqual(viewport.getFlip(), false, "Unsetting flip state variable, viewport should be false again");
+
+          done();
+      };
+      viewer.addHandler('open', openHandler);
+      viewer.open(DZI_PATH);
+    });
 })();