diff --git a/package.json b/package.json
index 1971ef2..400078a 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,7 @@
   },
   "devDependencies": {
     "codacy-coverage": "^1.1.3",
+    "fast-html-parser": "^1.0.1",
     "istanbul": "^0.4.1",
     "less": "2.5.*",
     "mocha": "^2.3.4",
diff --git a/test/side-by-side-printer-tests.js b/test/side-by-side-printer-tests.js
index b11d4ae..6821865 100644
--- a/test/side-by-side-printer-tests.js
+++ b/test/side-by-side-printer-tests.js
@@ -21,4 +21,99 @@ describe('SideBySidePrinter', function() {
       assert.equal(expectedLeft, fileHtml.left);
     });
   });
+
+  describe('generateSideBySideFileHtml', function() {
+    it('should generate lines with the right prefixes', function() {
+      var sideBySidePrinter = new SideBySidePrinter({});
+
+      var file = {
+        "blocks": [{
+          "lines": [{
+            "content": " context",
+            "type": "d2h-cntx",
+            "oldNumber": 19,
+            "newNumber": 19
+          }, {"content": "-removed", "type": "d2h-del", "oldNumber": 20, "newNumber": null}, {
+            "content": "+added",
+            "type": "d2h-ins",
+            "oldNumber": null,
+            "newNumber": 20
+          }], "oldStartLine": "19", "newStartLine": "19", "header": "@@ -19,7 +19,7 @@"
+        }],
+        "deletedLines": 1,
+        "addedLines": 1,
+        "checksumBefore": "fc56817",
+        "checksumAfter": "e8e7e49",
+        "mode": "100644",
+        "oldName": "coverage.init",
+        "language": "init",
+        "newName": "coverage.init",
+        "isCombined": false
+      };
+
+      var fileHtml = sideBySidePrinter.generateSideBySideFileHtml(file);
+
+      var expectedRight = '<tr>' +
+        '    <td class="d2h-code-side-linenumber d2h-info"></td>' +
+        '    <td class="d2h-info">' +
+        '        <div class="d2h-code-side-line d2h-info"></div>' +
+        '    </td>' +
+        '</tr>' +
+        '<tr>' +
+        '    <td class="d2h-code-side-linenumber d2h-cntx">19</td>' +
+        '    <td class="d2h-cntx">' +
+        '        <div class="d2h-code-side-line d2h-cntx">' +
+        '            <span class="d2h-code-line-prefix"> </span>' +
+        '            <span class="d2h-code-line-ctn">context</span>' +
+        '        </div>' +
+        '    </td>' +
+        '</tr>' +
+        '<tr>' +
+        '    <td class="d2h-code-side-linenumber d2h-ins">20</td>' +
+        '    <td class="d2h-ins">' +
+        '        <div class="d2h-code-side-line d2h-ins">' +
+        '            <span class="d2h-code-line-prefix">+</span>' +
+        '            <span class="d2h-code-line-ctn"><ins>added</ins></span>' +
+        '        </div>' +
+        '    </td>' +
+        '</tr>';
+
+      var expectedLeft = '<tr>' +
+        '    <td class="d2h-code-side-linenumber d2h-info"></td>' +
+        '    <td class="d2h-info">' +
+        '        <div class="d2h-code-side-line d2h-info"> @@ -19,7 +19,7 @@</div>' +
+        '    </td>' +
+        '</tr>' +
+        '<tr>' +
+        '    <td class="d2h-code-side-linenumber d2h-cntx">19</td>' +
+        '    <td class="d2h-cntx">' +
+        '        <div class="d2h-code-side-line d2h-cntx">' +
+        '            <span class="d2h-code-line-prefix"> </span>' +
+        '            <span class="d2h-code-line-ctn">context</span>' +
+        '        </div>' +
+        '    </td>' +
+        '</tr>' +
+        '<tr>' +
+        '    <td class="d2h-code-side-linenumber d2h-del">20</td>' +
+        '    <td class="d2h-del">' +
+        '        <div class="d2h-code-side-line d2h-del">' +
+        '            <span class="d2h-code-line-prefix">-</span>' +
+        '            <span class="d2h-code-line-ctn"><del>removed</del></span>' +
+        '        </div>' +
+        '    </td>' +
+        '</tr>';
+
+      var HTMLParser = require('fast-html-parser');
+
+      var parsedExpectedRight = HTMLParser.parse(expectedRight);
+      var parsedFileRight = HTMLParser.parse(fileHtml.right);
+      assert.equal(parsedExpectedRight.querySelectorAll(".d2h-code-line-prefix").length > 0, true);
+      assert.equal(parsedExpectedRight.querySelectorAll(".d2h-code-line-prefix").length, parsedFileRight.querySelectorAll(".d2h-code-line-prefix").length);
+
+      var parsedExpectedLeft = HTMLParser.parse(expectedLeft);
+      var parsedFileLeft = HTMLParser.parse(fileHtml.left);
+      assert.equal(parsedExpectedLeft.querySelectorAll(".d2h-code-line-prefix").length > 0, true);
+      assert.equal(parsedExpectedLeft.querySelectorAll(".d2h-code-line-prefix").length, parsedFileLeft.querySelectorAll(".d2h-code-line-prefix").length);
+    });
+  });
 });