HTML parsing inconsistency with <div>

[0nko]

Parsing the following HTML gives an incorrect output HTML:

<h3><strong>Shipped:</strong></h3><br>
<div class="entry-content">
	<br>
	<ul>
		<li style="list-style: none"><br></li>
		<li>
			<strong>Something:</strong> Text Here (<a href="https://wordpress.com">#</a>).
		</li>
		<li style="list-style: none"><br></li>
		<li>
			<strong>Title:</strong> List Item <a href="https://wordpress.com">link</a>.
		</li>
		<li style="list-style: none"><br></li>
		<li>
			<strong>Some bold text:</strong> plain here, <a href="https://wordpress.com">and a link!</a>.
		</li>
		<li style="list-style: none"><br></li>
	</ul><br>
	<h3><strong>Another list:</strong></h3><br>
	<ul>
		<li style="list-style: none"><br>
		<br></li>
		<li>
			<strong>Another Item</strong>Another <a href="https://wordpress.com">link</a>
		</li>
		<li style="list-style: none"><br></li>
	</ul><br>
</div><br>
#yolo

Expected

The same as input.

Observed

<h3><b>Shipped:
<div class="entry-content"></div>
</b></h3>
<ul>
	<li style="list-style: none"></li>
	<li>			<b>Something:</b> Text Here (<a href="https://wordpress.com">#</a>).</li>
	<li style="list-style: none"></li>
	<li>			<b>Title:</b> List Item <a href="https://wordpress.com">link</a>.</li>
	<li style="list-style: none"></li>
	<li>			<b>Some bold text:</b> plain here, <a href="https://wordpress.com">and a link!</a>.</li>
	<li style="list-style: none"></li>
</ul>
<h3><b>Another list:</b></h3>
<ul>
	<li style="list-style: none"></li>
	<li>			<b>Another Item</b>Another <a href="https://wordpress.com">link</a></li>
	<li style="list-style: none"></li>
</ul>
#yolo

Reproduced

1. Paste the original code in the HTML mode
2. Switch to visual mode
3. Switch back to HTML
4. Notice the output is not the same as input

Tested

Emulator on Android 7.1.1 with 1.0-beta.6

[maxme]

We should have a unit test to reproduce that one - cc @rachelmcr

[rachelmcr]

I can't reproduce the output in the original report — instead, the div tags are removed entirely with this output:

<h3><b>Shipped:</b></h3>
<br>
<br>
<ul>
 <li style="list-style: none"></li>
 <li><b>Something:</b> Text Here (<a href="https://wordpress.com">#</a>).</li>
 <li style="list-style: none"></li>
 <li><b>Title:</b> List Item <a href="https://wordpress.com">link</a>.</li>
 <li style="list-style: none"></li>
 <li><b>Some bold text:</b> plain here, <a href="https://wordpress.com">and a link!</a>.</li>
 <li style="list-style: none"></li>
</ul>
<br>
<h3><b>Another list:</b></h3>
<br>
<ul>
 <li style="list-style: none"></li>
 <li><b>Another Item</b>Another <a href="https://wordpress.com">link</a></li>
 <li style="list-style: none"></li>
</ul>
<br>
<br>
#yolo

While testing the issue I found two div parsing issues:

1. div tags are removed (as above) when a br tag precedes it.

Input: <br><div><br></div>
Output: <br><br>

2. div tags are moved inside a list item when there is a list inside the div.

Input: <div><ul><li>Unordered</li></ul></div>
Output: <ul><li><div>Unordered</div></li></ul>

I'll add unit tests for both of those cases.