place new tests in test/new.

Author: chjj

test/new/gfm_code.html

@@ -3,3 +3,8 @@
 <pre><code class="lang-bash">echo &quot;hello, ${WORLD}&quot;</code></pre>
 <pre><code class="lang-longfence">Q: What do you call a tall person who sells stolen goods?</code></pre>
 <pre><code class="lang-ManyTildes">A longfence!</code></pre>
+<p>How about an empty code block?</p>
+<pre><code class="lang-js"></code></pre>
+<p>How about a code block with only an empty line?</p>
+<pre><code class="lang-js">
+</code></pre>

test/new/gfm_code.text

@@ -14,3 +14,14 @@ Q: What do you call a tall person who sells stolen goods?
 ~~~~~~~~~~  ManyTildes
 A longfence!
 ~~~~~~~~~~
+
+How about an empty code block?
+
+```js
+```
+
+How about a code block with only an empty line?
+
+```js
+
+```