From 00d780adfa7a8a01105db02b75ea08fe2e8770f1 Mon Sep 17 00:00:00 2001
From: Pavel Reznikov <pashka.reznikov@gmail.com>
Date: Mon, 22 Feb 2016 22:47:43 -0800
Subject: [PATCH] GridStackEngine testing

---
 spec/gridstack-engine-spec.js | 123 +++++++++++++++++++++++++++++++++-
 1 file changed, 121 insertions(+), 2 deletions(-)

diff --git a/spec/gridstack-engine-spec.js b/spec/gridstack-engine-spec.js
index d836676..2ded86b 100644
--- a/spec/gridstack-engine-spec.js
+++ b/spec/gridstack-engine-spec.js
@@ -3,15 +3,19 @@ describe('gridstack engine', function() {
 
     var e;
     var w;
-    var engine;
 
     beforeEach(function() {
         w = window;
         e = w.GridStackUI.Engine;
-        engine = new w.GridStackUI.Engine(12);
     });
 
     describe('test constructor', function() {
+        var engine;
+
+        beforeAll(function() {
+            engine = new GridStackUI.Engine(12);
+        })
+
         it('should be setup properly', function() {
             expect(engine.width).toEqual(12);
             expect(engine.float).toEqual(false);
@@ -21,6 +25,12 @@ describe('gridstack engine', function() {
     });
 
     describe('test _prepareNode', function() {
+        var engine;
+
+        beforeAll(function() {
+            engine = new GridStackUI.Engine(12);
+        })
+
         it('should prepare a node', function() {
             expect(engine._prepareNode({}, false)).toEqual(jasmine.objectContaining({x: 0, y: 0, width: 1, height: 1}));
             expect(engine._prepareNode({x: 10}, false)).toEqual(jasmine.objectContaining({x: 10, y: 0, width: 1, height: 1}));
@@ -38,4 +48,113 @@ describe('gridstack engine', function() {
             expect(engine._prepareNode({x: 4, width: 10}, true)).toEqual(jasmine.objectContaining({x: 4, y: 0, width: 8, height: 1}));
         });
     });
+
+    describe('test isAreaEmpty', function() {
+        var engine;
+
+        beforeAll(function() {
+            engine = new GridStackUI.Engine(12, null, true);
+            engine.nodes = [
+                engine._prepareNode({x: 3, y: 2, width: 3, height: 2})
+            ];
+        })
+
+        it('should be true', function() {
+            expect(engine.isAreaEmpty(0, 0, 3, 2)).toEqual(true);
+            expect(engine.isAreaEmpty(3, 4, 3, 2)).toEqual(true);
+        });
+
+        it('should be false', function() {
+            expect(engine.isAreaEmpty(1, 1, 3, 2)).toEqual(false);
+            expect(engine.isAreaEmpty(2, 3, 3, 2)).toEqual(false);
+        });
+    });
+
+    describe('test cleanNodes/getDirtyNodes', function() {
+        var engine;
+
+        beforeAll(function() {
+            engine = new GridStackUI.Engine(12, null, true);
+            engine.nodes = [
+                engine._prepareNode({x: 0, y: 0, width: 1, height: 1, idx: 1, _dirty: true}),
+                engine._prepareNode({x: 3, y: 2, width: 3, height: 2, idx: 2, _dirty: true}),
+                engine._prepareNode({x: 3, y: 7, width: 3, height: 2, idx: 3})
+            ];
+        });
+
+        beforeEach(function() {
+            engine._updateCounter = 0;
+        });
+
+        it('should return all dirty nodes', function() {
+            var nodes = engine.getDirtyNodes();
+
+            expect(nodes.length).toEqual(2);
+            expect(nodes[0].idx).toEqual(1);
+            expect(nodes[1].idx).toEqual(2);
+        });
+
+        it('should\'n clean nodes if _updateCounter > 0', function() {
+            engine._updateCounter = 1;
+            engine.cleanNodes();
+
+            expect(engine.getDirtyNodes().length).toBeGreaterThan(0);
+        });
+
+        it('should clean all dirty nodes', function() {
+            engine.cleanNodes();
+
+            expect(engine.getDirtyNodes().length).toEqual(0);
+        });
+    });
+
+    describe('test _notify', function() {
+        var engine;
+        var spy;
+
+        beforeEach(function() {
+            spy = {
+                callback: function () {}
+            }
+            spyOn(spy, 'callback');
+
+            engine = new GridStackUI.Engine(12, spy.callback, true);
+
+            engine.nodes = [
+                engine._prepareNode({x: 0, y: 0, width: 1, height: 1, idx: 1, _dirty: true}),
+                engine._prepareNode({x: 3, y: 2, width: 3, height: 2, idx: 2, _dirty: true}),
+                engine._prepareNode({x: 3, y: 7, width: 3, height: 2, idx: 3})
+            ];
+        });
+
+        it('should\'n be called if _updateCounter > 0', function() {
+            engine._updateCounter = 1;
+            engine._notify();
+
+            expect(spy.callback).not.toHaveBeenCalled();
+        });
+
+        it('should by called with dirty nodes', function() {
+            engine._notify();
+
+            expect(spy.callback).toHaveBeenCalledWith([
+                engine.nodes[0],
+                engine.nodes[1]
+            ]);
+        });
+
+        it('should by called with extra passed dirty nodes', function() {
+            var n1 = {idx: -1},
+                n2 = {idx: -2};
+
+            engine._notify(n1, n2);
+
+            expect(spy.callback).toHaveBeenCalledWith([
+                n1,
+                n2,
+                engine.nodes[0],
+                engine.nodes[1]
+            ]);
+        });
+    });
 });