Adds test for whitespaces and indentation and adds template for the wrapper

src/line-by-line-printer.js

@@ -25,6 +25,10 @@
     return nunjucksEnv.render('file-diff.html', {'file': file, 'diffs': diffs});
   };
 
+  LineByLinePrinter.prototype.makeLineByLineHtmlWrapper = function(content) {
+    return nunjucksEnv.render('wrapper.html', {'content': content});
+  };
+
   LineByLinePrinter.prototype.generateLineByLineJsonHtml = function(diffFiles) {
     var that = this;
     var htmlDiffs = diffFiles.map(function(file) {
@@ -37,7 +41,7 @@
         return that.makeFileDiffHtml(file, diffs);
       });
 
-    return '<div class="d2h-wrapper">\n' + htmlDiffs.join('\n') + '</div>\n';
+    return this.makeLineByLineHtmlWrapper(htmlDiffs.join('\n'));
   };
 
   var matcher = Rematch.rematch(function(a, b) {

src/templates/line-by-line/wrapper.html

@@ -0,0 +1,3 @@
+<div class="d2h-wrapper">
+  {{ content }}
+</div>

test/line-by-line-tests.js

@@ -1,4 +1,5 @@
 var assert = require('assert');
+var Utils = require('../src/utils.js').Utils;
 
 var LineByLinePrinter = require('../src/line-by-line-printer.js').LineByLinePrinter;
 
@@ -62,6 +63,72 @@ describe('LineByLinePrinter', function() {
       '  </td>\n' +
       '</tr>\n';
 
+      assert.equal(expected, fileHtml);
+    });
+    it('should convert indents into non breakin spaces (2 white spaces)', function() {
+
+      var diffParser = require('../src/diff-parser.js').DiffParser;
+      var lineByLinePrinter = new LineByLinePrinter({});
+      var fileHtml = lineByLinePrinter.makeLineHtml(
+        diffParser.LINE_TYPE.INSERTS, '', 30, '+', '  test');
+      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
+      var expected = '<tr>\n' +
+      '  <td class="d2h-code-linenumber d2h-ins">\n' +
+      '    <div class="line-num1"></div>\n' +
+      '    <div class="line-num2">30</div>\n' +
+      '  </td>\n' +
+      '  <td class="d2h-ins">\n' +
+      '    <div class="d2h-code-line d2h-ins">\n' +
+      '      <span class="d2h-code-line-prefix">&nbsp;&nbsp;test</span>\n' +
+      '      <span class="d2h-code-line-ctn">+</span>\n' +
+      '    </div>\n' +
+      '  </td>\n' +
+      '</tr>\n';
+
+      assert.equal(expected, fileHtml);
+    });
+    it('should convert indents into non breakin spaces (4 white spaces)', function() {
+
+      var diffParser = require('../src/diff-parser.js').DiffParser;
+      var lineByLinePrinter = new LineByLinePrinter({});
+      var fileHtml = lineByLinePrinter.makeLineHtml(
+        diffParser.LINE_TYPE.INSERTS, '', 30, '+', '    test');
+      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
+      var expected = '<tr>\n' +
+      '  <td class="d2h-code-linenumber d2h-ins">\n' +
+      '    <div class="line-num1"></div>\n' +
+      '    <div class="line-num2">30</div>\n' +
+      '  </td>\n' +
+      '  <td class="d2h-ins">\n' +
+      '    <div class="d2h-code-line d2h-ins">\n' +
+      '      <span class="d2h-code-line-prefix">&nbsp;&nbsp;&nbsp;&nbsp;test</span>\n' +
+      '      <span class="d2h-code-line-ctn">+</span>\n' +
+      '    </div>\n' +
+      '  </td>\n' +
+      '</tr>\n';
+
+      assert.equal(expected, fileHtml);
+    });
+    it('should convert indents into non breakin spaces (one tab)', function() {
+
+      var diffParser = require('../src/diff-parser.js').DiffParser;
+      var lineByLinePrinter = new LineByLinePrinter({});
+      var fileHtml = lineByLinePrinter.makeLineHtml(
+        diffParser.LINE_TYPE.INSERTS, '', 30, '+', Utils.escape('\ttest'));
+      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
+      var expected = '<tr>\n' +
+      '  <td class="d2h-code-linenumber d2h-ins">\n' +
+      '    <div class="line-num1"></div>\n' +
+      '    <div class="line-num2">30</div>\n' +
+      '  </td>\n' +
+      '  <td class="d2h-ins">\n' +
+      '    <div class="d2h-code-line d2h-ins">\n' +
+      '      <span class="d2h-code-line-prefix">&nbsp;&nbsp;&nbsp;&nbsp;test</span>\n' +
+      '      <span class="d2h-code-line-ctn">+</span>\n' +
+      '    </div>\n' +
+      '  </td>\n' +
+      '</tr>\n';
+
       assert.equal(expected, fileHtml);
     });
   });

test/utils-tests.js

@@ -22,4 +22,18 @@ describe('Utils', function() {
       assert.equal(expected, result);
     });
   });
+  describe('convertWhiteSpaceToNonBreakingSpace', function() {
+    it('should escape 1 whitespaces with  ', function() {
+      var result = Utils.convertWhiteSpaceToNonBreakingSpace(' ');
+      assert.equal(' ', result);
+    });
+    it('should escape 2 whitespaces with  ', function() {
+      var result = Utils.convertWhiteSpaceToNonBreakingSpace('  ');
+      assert.equal('  ', result);
+    });
+    it('should escape 4 whitespaces with  ', function() {
+      var result = Utils.convertWhiteSpaceToNonBreakingSpace('    ');
+      assert.equal('    ', result);
+    });
+  });
 });