have you clicked on the tests to see the output?
It says
write some markdown representing a codeblock, i.e.
<pre><code>...</code></pre>: expectedfalseto betrue
you don’t have a codeblock
And 6 says
#previewdoes not contain at least one<pre>: expected +0 to be at least 1
Follow this to write a codeblock in markdown, it’s the isntructions to write a codeblock on the forum, but the same identical syntax is for there:
When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.
See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').