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diff --git a/lib/modifiers/summary/__tests__/moveArticleAfter.js b/lib/modifiers/summary/__tests__/moveArticleAfter.js
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+++ b/lib/modifiers/summary/__tests__/moveArticleAfter.js
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+var Immutable = require('immutable');
+var Summary = require('../../../models/summary');
+var File = require('../../../models/file');
+
+describe('moveArticleAfter', function() {
+    var moveArticleAfter = require('../moveArticleAfter');
+    var summary = Summary.createFromParts(File(), [
+        {
+            articles: [
+                {
+                    title: '1.1',
+                    path: '1.1'
+                },
+                {
+                    title: '1.2',
+                    path: '1.2'
+                }
+            ]
+        },
+        {
+            title: 'Part I',
+            articles: [
+                {
+                    title: '2.1',
+                    path: '2.1',
+                    articles: [
+                        {
+                            title: '2.1.1',
+                            path: '2.1.1'
+                        },
+                        {
+                            title: '2.1.2',
+                            path: '2.1.2'
+                        }
+                    ]
+                },
+                {
+                    title: '2.2',
+                    path: '2.2'
+                }
+            ]
+        }
+    ]);
+
+    it('moving right after itself should be invariant', function() {
+        var newSummary = moveArticleAfter(summary, '2.1', '2.1');
+
+        expect(Immutable.is(summary, newSummary)).toBe(true);
+    });
+
+    it('moving after previous one should be invariant too', function() {
+        var newSummary = moveArticleAfter(summary, '2.1', '2.0');
+
+        expect(Immutable.is(summary, newSummary)).toBe(true);
+    });
+
+    it('should move an article after a previous level', function() {
+        var newSummary = moveArticleAfter(summary, '2.2', '2.0');
+        var moved = newSummary.getByLevel('2.1');
+
+        expect(moved.getTitle()).toBe('2.2');
+        expect(newSummary.getByLevel('2.2').getTitle()).toBe('2.1');
+    });
+
+    it('should move an article after a previous and less deep level', function() {
+        var newSummary = moveArticleAfter(summary, '2.1.1', '2.0');
+        var moved = newSummary.getByLevel('2.1');
+
+        expect(moved.getTitle()).toBe('2.1.1');
+        expect(newSummary.getByLevel('2.2.1').getTitle()).toBe('2.1.2');
+        expect(newSummary.getByLevel('2.2').getTitle()).toBe('2.1');
+    });
+
+    it('should move an article after a next level', function() {
+        var newSummary = moveArticleAfter(summary, '2.1', '2.2');
+        var moved = newSummary.getByLevel('2.2');
+
+        expect(moved.getTitle()).toBe('2.1');
+        expect(newSummary.getByLevel('2.1').getTitle()).toBe('2.2');
+    });
+
+});