Add tests for html entities encoding

tests/without-config.js

@@ -47,6 +47,19 @@ let posts = [
 <!-- more -->
 <p>block 2 <span>123</span></p>
 <div>block3</div>`.trim()
+    },
+    {
+      path: '',
+      title: 'post with html entities',
+      excerpt: '',
+      layout: '',
+      content: `
+<p>block 1 &lt;span&gt;</p>
+<p>2</p><p>3</p><p>4</p>
+<p>5</p><p>6</p><p>7</p>
+<p>8</p><p>9</p><p>10</p>
+<p>block 11 &lt;span&gt;</p>
+`.trim()
     }
 ];
 
@@ -73,4 +86,9 @@ describe('Automatic excerpt generator with default depth config', () => {
     generatedPosts[2].data.excerpt.should.equal('');
   });
 
+  it('post with html entities should have them intact', () => {
+    generatedPosts[3].data.excerpt.should.equal('<p>block 1 &lt;span&gt;</p>\n<p>2</p><p>3</p><p>4</p>\n<p>5</p><p>6</p><p>7</p>\n<p>8</p><p>9</p><p>10</p>');
+    generatedPosts[3].data.more.should.equal('\n<p>block 11 &lt;span&gt;</p>');
+  });
+
 });