[nit.git] / lib / markdown / test_markdown.nit

# This file is part of NIT ( http://www.nitlanguage.org ).
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Test suites for module `markdown`
module test_markdown is test_suite

import test_suite
intrude import markdown

class TestMarkdownProcessor
        super TestSuite

        fun test_process_empty do
                var test = ""
                var exp = ""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_tabs do
                var test = """
        some code
"""
                var exp = """<pre><code>some code
</code></pre>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end


        fun test_process_par1 do
                var test = "test"
                var exp = "<p>test</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_par2 do
                var test = """
line1
line2

line3 line4

line5"""
                var exp = """
<p>line1
line2</p>
<p>line3 line4</p>
<p>line5</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_par3 do
                var test = """
Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.

Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
id sem consectetuer libero luctus adipiscing.
"""
                var exp = """
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.</p>
<p>Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
id sem consectetuer libero luctus adipiscing.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_headings_1 do
                var test = """
This is a H1
=============

This is a H2
-------------
"""
                var exp = """
<h1 id="This_is_a_H1">This is a H1</h1>
<h2 id="This_is_a_H2">This is a H2</h2>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_headings_2 do
                var test = """
# This is a H1

## This is a H2
###### This is a H6
"""
                var exp = """
<h1 id="This_is_a_H1">This is a H1</h1>
<h2 id="This_is_a_H2">This is a H2</h2>
<h6 id="This_is_a_H6">This is a H6</h6>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_headings_3 do
                var test = """
# This is a H1 #

## This is a H2 ##

### This is a H3 ######
"""
                var exp = """
<h1 id="This_is_a_H1">This is a H1</h1>
<h2 id="This_is_a_H2">This is a H2</h2>
<h3 id="This_is_a_H3">This is a H3</h3>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_hr do
                var test = """
* * *

***

*****

- - -

---------------------------------------
"""
                var exp = "<hr/>\n<hr/>\n<hr/>\n<hr/>\n<hr/>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_bquote1 do
                var test = """
> This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
> consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
> Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.
>
> Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
> id sem consectetuer libero luctus adipiscing.
"""
                var exp = """<blockquote>
<p>This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.</p>
<p>Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
id sem consectetuer libero luctus adipiscing.</p>
</blockquote>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_bquote2 do
                var test = """
> This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.

> Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
id sem consectetuer libero luctus adipiscing.
"""
                var exp = """<blockquote>
<p>This is a blockquote with two paragraphs. Lorem ipsum dolor sit amet,
consectetuer adipiscing elit. Aliquam hendrerit mi posuere lectus.
Vestibulum enim wisi, viverra nec, fringilla in, laoreet vitae, risus.</p>
<p>Donec sit amet nisl. Aliquam semper ipsum sit amet velit. Suspendisse
id sem consectetuer libero luctus adipiscing.</p>
</blockquote>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_bquote3 do
                var test = """
> This is the first level of quoting.
>
> > This is nested blockquote.
>
> Back to the first level.
"""
                var exp = """<blockquote>
<p>This is the first level of quoting.</p>
<blockquote>
<p>This is nested blockquote.</p>
</blockquote>
<p>Back to the first level.</p>
</blockquote>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list1 do
                var test = """
*   Red
*   Green
*   Blue
"""
                var exp = """<ul>
<li>Red</li>
<li>Green</li>
<li>Blue</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list2 do
                var test = """
+   Red
+   Green
+   Blue
"""
                var exp = """<ul>
<li>Red</li>
<li>Green</li>
<li>Blue</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list3 do
                var test = """
-   Red
-   Green
-   Blue
"""
                var exp = """<ul>
<li>Red</li>
<li>Green</li>
<li>Blue</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list4 do
                var test = """
1.  Bird
2.  McHale
3.  Parish
"""
                var exp = """<ol>
<li>Bird</li>
<li>McHale</li>
<li>Parish</li>
</ol>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list5 do
                var test = """
3. Bird
1. McHale
8. Parish
"""
                var exp = """<ol>
<li>Bird</li>
<li>McHale</li>
<li>Parish</li>
</ol>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list6 do
                var test = """
*   Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
    Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
    viverra nec, fringilla in, laoreet vitae, risus.
*   Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
    Suspendisse id sem consectetuer libero luctus adipiscing.
"""
                var exp = """
<ul>
<li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
viverra nec, fringilla in, laoreet vitae, risus.</li>
<li>Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
Suspendisse id sem consectetuer libero luctus adipiscing.</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list7 do
                var test = """
*   Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
viverra nec, fringilla in, laoreet vitae, risus.
*   Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
Suspendisse id sem consectetuer libero luctus adipiscing.
"""
                var exp = """
<ul>
<li>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
Aliquam hendrerit mi posuere lectus. Vestibulum enim wisi,
viverra nec, fringilla in, laoreet vitae, risus.</li>
<li>Donec sit amet nisl. Aliquam semper ipsum sit amet velit.
Suspendisse id sem consectetuer libero luctus adipiscing.</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list8 do
                var test = """
*   Bird

*   Magic
"""
                var exp = """
<ul>
<li><p>Bird</p>
</li>
<li><p>Magic</p>
</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list9 do
                var test = """
1.  This is a list item with two paragraphs. Lorem ipsum dolor
    sit amet, consectetuer adipiscing elit. Aliquam hendrerit
    mi posuere lectus.

    Vestibulum enim wisi, viverra nec, fringilla in, laoreet
    vitae, risus. Donec sit amet nisl. Aliquam semper ipsum
    sit amet velit.

2.  Suspendisse id sem consectetuer libero luctus adipiscing.
"""
                var exp = """
<ol>
<li><p>This is a list item with two paragraphs. Lorem ipsum dolor
sit amet, consectetuer adipiscing elit. Aliquam hendrerit
mi posuere lectus.</p>
<p>Vestibulum enim wisi, viverra nec, fringilla in, laoreet
vitae, risus. Donec sit amet nisl. Aliquam semper ipsum
sit amet velit.</p>
</li>
<li><p>Suspendisse id sem consectetuer libero luctus adipiscing.</p>
</li>
</ol>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_list10 do
                var test = """
*   This is a list item with two paragraphs.

    This is the second paragraph in the list item. You're
only required to indent the first line. Lorem ipsum dolor
sit amet, consectetuer adipiscing elit.

*   Another item in the same list.
"""
                var exp = """
<ul>
<li><p>This is a list item with two paragraphs.</p>
<p>This is the second paragraph in the list item. You're
only required to indent the first line. Lorem ipsum dolor
sit amet, consectetuer adipiscing elit.</p>
</li>
<li><p>Another item in the same list.</p>
</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_code1 do
                var test = """
This is a normal paragraph:

    This is a code block.
"""
                var exp = """<p>This is a normal paragraph:</p>
<pre><code>This is a code block.
</code></pre>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_code2 do
                var test = """
Here is an example of AppleScript:

    tell application "Foo"
        beep
    end tell

    <div class="footer">
        &copy; 2004 Foo Corporation
    </div>
"""
                var exp = """
<p>Here is an example of AppleScript:</p>
<pre><code>tell application "Foo"
    beep
end tell

&lt;div class="footer"&gt;
    &amp;copy; 2004 Foo Corporation
&lt;/div&gt;
</code></pre>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_nesting1 do
                var test = """
> ## This is a header.
>
> 1.   This is the first list item.
> 2.   This is the second list item.
>
> Here's some example code:
>
>     return shell_exec("echo $input | $markdown_script");
"""
                var exp = """
<blockquote>
<h2 id="This_is_a_header.">This is a header.</h2>
<ol>
<li>This is the first list item.</li>
<li>This is the second list item.</li>
</ol>
<p>Here's some example code:</p>
<pre><code>return shell_exec("echo $input | $markdown_script");
</code></pre>
</blockquote>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_nesting2 do
                var test = """
*   A list item with a blockquote:

    > This is a blockquote
    > inside a list item.
"""
                var exp = """
<ul>
<li><p>A list item with a blockquote:</p>
<blockquote>
<p>This is a blockquote
inside a list item.</p>
</blockquote>
</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_nesting3 do
                var test = """
*   A list item with a code block:

        <code goes here>
"""
                var exp = """
<ul>
<li><p>A list item with a code block:</p>
<pre><code>&lt;code goes here&gt;
</code></pre>
</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_nesting4 do
                var test = """
*       Tab
        *       Tab
                *       Tab
"""
                var exp = """
<ul>
<li>Tab<ul>
<li>Tab<ul>
<li>Tab</li>
</ul>
</li>
</ul>
</li>
</ul>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        # TODO
        #       fun test_process_nesting5 do
        #               var test = """
        # *     this
        #
        #       *       sub
        #
        #               that
        # """
        #               var exp = """
        # <ul>
        # <li><p>this</p>
        # <ul>
        # <li>sub</li>
        # </ul>
        # <p>that</p>
        # </li>
        # </ul>
        # """
        #               var res = test.md_to_html.write_to_string
        #               assert res == exp
        #       end

        fun test_process_emph1 do
                var test = """
*single asterisks*

_single underscores_

**double asterisks**

__double underscores__
"""
                var exp = """<p><em>single asterisks</em></p>
<p><em>single underscores</em></p>
<p><strong>double asterisks</strong></p>
<p><strong>double underscores</strong></p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_emph2 do
                var test = "un*frigging*believable"
                var exp = "<p>un<em>frigging</em>believable</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_xml1 do
                var test = """
This is a regular paragraph.

<table>
    <tr>
        <td>Foo</td>
    </tr>
</table>

This is another regular paragraph.
"""
                var exp = """
<p>This is a regular paragraph.</p>
<table>
    <tr>
        <td>Foo</td>
    </tr>
</table>
<p>This is another regular paragraph.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_xml2 do
                var test = """
This is an image <img src="foo/bar" alt="baz"/> in a regular paragraph.
"""
                var exp = """<p>This is an image <img src="foo/bar" alt="baz" /> in a regular paragraph.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_xml3 do
                var test = """
<div style=">"/>
"""
                var exp = """
<div style=">"/>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_span_code1 do
                var test = "Use the `printf()` function."
                var exp = "<p>Use the <code>printf()</code> function.</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_span_code2 do
                var test = "``There is a literal backtick (`) here.``"
                var exp = "<p><code>There is a literal backtick (`) here.</code></p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_span_code3 do
                var test = """
A single backtick in a code span: `` ` ``

A backtick-delimited string in a code span: `` `foo` ``
"""
                var exp = """
<p>A single backtick in a code span: <code>`</code></p>
<p>A backtick-delimited string in a code span: <code>`foo`</code></p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_span_code4 do
                var test = "Please don't use any `<blink>` tags."
                var exp = "<p>Please don't use any <code>&lt;blink&gt;</code> tags.</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_span_code5 do
                var test = "`&#8212;` is the decimal-encoded equivalent of `&mdash;`."
                var exp = "<p><code>&amp;#8212;</code> is the decimal-encoded equivalent of <code>&amp;mdash;</code>.</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_escape1 do
                var test = "\\*this text is surrounded by literal asterisks\\*"
                var exp = "<p>*this text is surrounded by literal asterisks*</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_escape2 do
                var test = "1986\\. What a great season."
                var exp = "<p>1986. What a great season.</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_escape3 do
                var test = "Ben & Lux"
                var exp = "<p>Ben &amp; Lux</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link1 do
                var test = """
This is [an example](http://example.com/ "Title") inline link.

[This link](http://example.net/) has no title attribute.
"""
                var exp = """<p>This is <a href="http://example.com/" title="Title">an example</a> inline link.</p>
<p><a href="http://example.net/">This link</a> has no title attribute.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link2 do
                var test = "See my [About](/about/) page for details."
                var exp = "<p>See my <a href=\"/about/\">About</a> page for details.</p>\n"
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link3 do
                var test = """
This is [an example][id] reference-style link.

This is [an example] [id] reference-style link.

Some lorem ipsum

[id]: http://example.com/  "Optional Title Here"

Some other lipsum
"""
                var exp = """
<p>This is <a href="http://example.com/" title="Optional Title Here">an example</a> reference-style link.</p>
<p>This is <a href="http://example.com/" title="Optional Title Here">an example</a> reference-style link.</p>
<p>Some lorem ipsum</p>
<p>Some other lipsum</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link4 do
                var test = """
This is multiple examples: [foo][1], [bar][2], [baz][3].

[1]: http://example.com/  "Optional Title Here"
[2]: http://example.com/  'Optional Title Here'
[3]: http://example.com/  (Optional Title Here)
"""
                var exp = """
<p>This is multiple examples: <a href="http://example.com/" title="Optional Title Here">foo</a>, <a href="http://example.com/" title="Optional Title Here">bar</a>, <a href="http://example.com/" title="Optional Title Here">baz</a>.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link5 do
                var test = """
This is multiple examples: [foo][a], [bar][A], [a].

[a]: http://example.com/  "Optional Title Here"
"""
                var exp = """<p>This is multiple examples: <a href="http://example.com/" title="Optional Title Here">foo</a>, <a href="http://example.com/" title="Optional Title Here">bar</a>, <a href="http://example.com/" title="Optional Title Here">a</a>.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link6 do
                var test = """
I get 10 times more traffic from [Google][] than from [Yahoo][] or [MSN][].

[Google]: http://google.com/        "Google"
[Yahoo]: http://search.yahoo.com/   "Yahoo Search"
[MSN]: http://search.msn.com/       "MSN Search"
"""
                var exp = """<p>I get 10 times more traffic from <a href="http://google.com/" title="Google">Google</a> than from <a href="http://search.yahoo.com/" title="Yahoo Search">Yahoo</a> or <a href="http://search.msn.com/" title="MSN Search">MSN</a>.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link7 do
                var test = """
Visit [Daring Fireball][] for more information.

[Daring Fireball]: http://daringfireball.net/
"""
                var exp = """<p>Visit <a href="http://daringfireball.net/">Daring Fireball</a> for more information.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_link8 do
                var test = """
This one has a [line
break].

This one has a [line
break] with a line-ending space.

[line break]: /foo
"""
                var exp = """
<p>This one has a <a href="/foo">line
break</a>.</p>
<p>This one has a <a href="/foo">line
break</a> with a line-ending space.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        # FIXME unignore test once escape strings fixed
        #       fun test_process_link9 do
        #               var test = """
        # Foo [bar][].
        #
        # Foo [bar](/url/ "Title with \"quotes\" inside").
        #
        #
        #   [bar]: /url/ "Title with \"quotes\" inside"
        # """
        #               var exp = """
        # <p>Foo <a href="/url/" title="Title with &quot;quotes&quot; inside">bar</a>.</p>
        # <p>Foo <a href="/url/" title="Title with &quot;quotes&quot; inside">bar</a>.</p>
        # """
        #               var res = test.md_to_html.write_to_string
        #               assert res == exp
        #       end

        fun test_process_img1 do
                var test = """
![Alt text](/path/to/img.jpg)

![Alt text](/path/to/img.jpg "Optional title")
"""
                var exp = """<p><img src="/path/to/img.jpg" alt="Alt text"/></p>
<p><img src="/path/to/img.jpg" alt="Alt text" title="Optional title"/></p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_process_img2 do
                var test = """
![Alt text][id]

[id]: url/to/image  "Optional title attribute"
"""
                var exp = """<p><img src="url/to/image" alt="Alt text" title="Optional title attribute"/></p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_encoding do
                var test = """
AT&T has an ampersand in their name.

AT&amp;T is another way to write it.

This & that.

4 < 5.

6 > 5.

Here's a [link] [1] with an ampersand in the URL.

Here's a link with an amersand in the link text: [AT&T] [2].

Here's an inline [link](/script?foo=1&bar=2).

Here's an inline [link](</script?foo=1&bar=2>).


[1]: http://example.com/?foo=1&bar=2
[2]: http://att.com/  "AT&T"
"""

                var exp = """
<p>AT&amp;T has an ampersand in their name.</p>
<p>AT&amp;T is another way to write it.</p>
<p>This &amp; that.</p>
<p>4 &lt; 5.</p>
<p>6 > 5.</p>
<p>Here's a <a href="http://example.com/?foo=1&amp;bar=2">link</a> with an ampersand in the URL.</p>
<p>Here's a link with an amersand in the link text: <a href="http://att.com/" title="AT&amp;T">AT&amp;T</a>.</p>
<p>Here's an inline <a href="/script?foo=1&amp;bar=2">link</a>.</p>
<p>Here's an inline <a href="/script?foo=1&amp;bar=2">link</a>.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp

        end

        fun test_daring_autolinks do
                var test = """
Link: <http://example.com/>.

With an ampersand: <http://example.com/?foo=1&bar=2>

* In a list?
* <http://example.com/>
* It should.

> Blockquoted: <http://example.com/>

Auto-links should not occur here: `<http://example.com/>`

        or here: <http://example.com/>
"""

                var exp = """
<p>Link: <a href="http://example.com/">http://example.com/</a>.</p>
<p>With an ampersand: <a href="http://example.com/?foo=1&amp;bar=2">http://example.com/?foo=1&amp;bar=2</a></p>
<ul>
<li>In a list?</li>
<li><a href="http://example.com/">http://example.com/</a></li>
<li>It should.</li>
</ul>
<blockquote>
<p>Blockquoted: <a href="http://example.com/">http://example.com/</a></p>
</blockquote>
<p>Auto-links should not occur here: <code>&lt;http://example.com/&gt;</code></p>
<pre><code>or here: &lt;http://example.com/&gt;
</code></pre>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_escape do
                var test = """
These should all get escaped:

Backslash: \\

Backtick: \`

Asterisk: \*

Underscore: \_

Left brace: \{

Right brace: \}

Left bracket: \[

Right bracket: \]

Left paren: \(

Right paren: \)

Greater-than: \>

Hash: \#

Period: \.

Bang: \!

Plus: \+

Minus: \-


These should not, because they occur within a code block:

        Backslash: \\

        Backtick: \`

        Asterisk: \*

        Underscore: \_

        Left brace: \{

        Right brace: \}

        Left bracket: \[

        Right bracket: \]

        Left paren: \(

        Right paren: \)

        Greater-than: \>

        Hash: \#

        Period: \.

        Bang: \!

        Plus: \+

        Minus: \-

Nor should these, which occur in code spans:

Backslash: `\\`

Backtick: `` \` ``

Asterisk: `\*`

Underscore: `\_`

Left brace: `\{`

Right brace: `\}`

Left bracket: `\[`

Right bracket: `\]`

Left paren: `\(`

Right paren: `\)`

Greater-than: `\>`

Hash: `\#`

Period: `\.`

Bang: `\!`

Plus: `\+`

Minus: `\-`

These should get escaped, even though they're matching pairs for
other Markdown constructs:

\\\*asterisks\\\*

\\\_underscores\\\_

\\\`backticks\\\`

This is a code span with a literal backslash-backtick sequence: `` \` ``

This is a tag with unescaped backticks <span attr='`ticks`'>bar</span>.

This is a tag with backslashes <span attr='\\\\backslashes\\\\'>bar</span>.
"""
                var exp = """
<p>These should all get escaped:</p>
<p>Backslash: \\</p>
<p>Backtick: \`</p>
<p>Asterisk: \*</p>
<p>Underscore: \_</p>
<p>Left brace: \{</p>
<p>Right brace: \}</p>
<p>Left bracket: \[</p>
<p>Right bracket: \]</p>
<p>Left paren: \(</p>
<p>Right paren: \)</p>
<p>Greater-than: \></p>
<p>Hash: \#</p>
<p>Period: \.</p>
<p>Bang: \!</p>
<p>Plus: \+</p>
<p>Minus: \-</p>
<p>These should not, because they occur within a code block:</p>
<pre><code>Backslash: \\

Backtick: \`

Asterisk: \*

Underscore: \_

Left brace: \{

Right brace: \}

Left bracket: \[

Right bracket: \]

Left paren: \(

Right paren: \)

Greater-than: \&gt;

Hash: \#

Period: \.

Bang: \!

Plus: \+

Minus: \-
</code></pre>
<p>Nor should these, which occur in code spans:</p>
<p>Backslash: <code>\\</code></p>
<p>Backtick: <code>\`</code></p>
<p>Asterisk: <code>\*</code></p>
<p>Underscore: <code>\_</code></p>
<p>Left brace: <code>\{</code></p>
<p>Right brace: <code>\}</code></p>
<p>Left bracket: <code>\[</code></p>
<p>Right bracket: <code>\]</code></p>
<p>Left paren: <code>\(</code></p>
<p>Right paren: <code>\)</code></p>
<p>Greater-than: <code>\&gt;</code></p>
<p>Hash: <code>\#</code></p>
<p>Period: <code>\.</code></p>
<p>Bang: <code>\!</code></p>
<p>Plus: <code>\+</code></p>
<p>Minus: <code>\-</code></p>
<p>These should get escaped, even though they're matching pairs for
other Markdown constructs:</p>
<p>*asterisks*</p>
<p>_underscores_</p>
<p>`backticks`</p>
<p>This is a code span with a literal backslash-backtick sequence: <code>\`</code></p>
<p>This is a tag with unescaped backticks <span attr='`ticks`'>bar</span>.</p>
<p>This is a tag with backslashes <span attr='\\\\backslashes\\\\'>bar</span>.</p>
"""

                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_blockquotes do
                var test = """
> Example:
>
>     sub status {
>         print "working";
>     }
>
> Or:
>
>     sub status {
>         return "working";
>     }
"""

                var exp = """
<blockquote>
<p>Example:</p>
<pre><code>sub status {
    print "working";
}
</code></pre>
<p>Or:</p>
<pre><code>sub status {
    return "working";
}
</code></pre>
</blockquote>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_code_blocks do
                var test = """
        code block on the first line

Regular text.

    code block indented by spaces

Regular text.

        the lines in this block
        all contain trailing spaces

Regular Text.

        code block on the last line
"""

                var exp = """
<pre><code>code block on the first line
</code></pre>
<p>Regular text.</p>
<pre><code>code block indented by spaces
</code></pre>
<p>Regular text.</p>
<pre><code>the lines in this block
all contain trailing spaces
</code></pre>
<p>Regular Text.</p>
<pre><code>code block on the last line
</code></pre>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_code_spans do
                var test = """
`<test a="` content of attribute `">`

Fix for backticks within HTML tag: <span attr='`ticks`'>like this</span>

Here's how you put `` `backticks` `` in a code span.
"""

                var exp = """
<p><code>&lt;test a="</code> content of attribute <code>"&gt;</code></p>
<p>Fix for backticks within HTML tag: <span attr='`ticks`'>like this</span></p>
<p>Here's how you put <code>`backticks`</code> in a code span.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_pars do
                var test = """
In Markdown 1.0.0 and earlier. Version
8. This line turns into a list item.
Because a hard-wrapped line in the
middle of a paragraph looked like a
list item.

Here's one with a bullet.
* criminey.
"""

                var exp = """
<p>In Markdown 1.0.0 and earlier. Version
8. This line turns into a list item.
Because a hard-wrapped line in the
middle of a paragraph looked like a
list item.</p>
<p>Here's one with a bullet.
* criminey.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_rules do
                var test = """
Dashes:

---

 ---

  ---

   ---

        ---

- - -

 - - -

  - - -

   - - -

        - - -


Asterisks:

***

 ***

  ***

   ***

        ***

* * *

 * * *

  * * *

   * * *

        * * *


Underscores:

___

 ___

  ___

   ___

    ___

_ _ _

 _ _ _

  _ _ _

   _ _ _

    _ _ _
"""

                var exp = """
<p>Dashes:</p>
<hr/>
<hr/>
<hr/>
<hr/>
<pre><code>---
</code></pre>
<hr/>
<hr/>
<hr/>
<hr/>
<pre><code>- - -
</code></pre>
<p>Asterisks:</p>
<hr/>
<hr/>
<hr/>
<hr/>
<pre><code>***
</code></pre>
<hr/>
<hr/>
<hr/>
<hr/>
<pre><code>* * *
</code></pre>
<p>Underscores:</p>
<hr/>
<hr/>
<hr/>
<hr/>
<pre><code>___
</code></pre>
<hr/>
<hr/>
<hr/>
<hr/>
<pre><code>_ _ _
</code></pre>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_images do
                var test = """
![Alt text](/path/to/img.jpg)

![Alt text](/path/to/img.jpg "Optional title")

Inline within a paragraph: [alt text](/url/).

![alt text](/url/  "title preceded by two spaces")

![alt text](/url/  "title has spaces afterward"  )

![alt text](</url/>)

![alt text](</url/> "with a title").

![Empty]()

![this is a stupid URL](http://example.com/(parens).jpg)


![alt text][foo]

  [foo]: /url/

![alt text][bar]

  [bar]: /url/ "Title here"
"""

                var exp = """
<p><img src="/path/to/img.jpg" alt="Alt text"/></p>
<p><img src="/path/to/img.jpg" alt="Alt text" title="Optional title"/></p>
<p>Inline within a paragraph: <a href="/url/">alt text</a>.</p>
<p><img src="/url/" alt="alt text" title="title preceded by two spaces"/></p>
<p><img src="/url/" alt="alt text" title="title has spaces afterward"/></p>
<p><img src="/url/" alt="alt text"/></p>
<p><img src="/url/" alt="alt text" title="with a title"/>.</p>
<p><img src="" alt="Empty"/></p>
<p><img src="http://example.com/(parens).jpg" alt="this is a stupid URL"/></p>
<p><img src="/url/" alt="alt text"/></p>
<p><img src="/url/" alt="alt text" title="Title here"/></p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_inline_html1 do
                var test = """
Here's a simple block:

<div>
        foo
</div>

This should be a code block, though:

        <div>
                foo
        </div>

As should this:

        <div>foo</div>

Now, nested:

<div>
        <div>
                <div>
                        foo
                </div>
        </div>
</div>

This should just be an HTML comment:

<!-- Comment -->

Multiline:

<!--
Blah
Blah
-->

Code block:

        <!-- Comment -->

Just plain comment, with trailing spaces on the line:

<!-- foo -->

Code:

        <hr />

Hr's:

<hr>

<hr/>

<hr />

<hr>

<hr/>

<hr />

<hr class="foo" id="bar" />

<hr class="foo" id="bar"/>

<hr class="foo" id="bar" >
"""

                var exp = """
<p>Here's a simple block:</p>
<div>
    foo
</div>
<p>This should be a code block, though:</p>
<pre><code>&lt;div&gt;
    foo
&lt;/div&gt;
</code></pre>
<p>As should this:</p>
<pre><code>&lt;div&gt;foo&lt;/div&gt;
</code></pre>
<p>Now, nested:</p>
<div>
    <div>
        <div>
            foo
        </div>
    </div>
</div>
<p>This should just be an HTML comment:</p>
<!-- Comment -->
<p>Multiline:</p>
<!--
Blah
Blah
-->
<p>Code block:</p>
<pre><code>&lt;!-- Comment --&gt;
</code></pre>
<p>Just plain comment, with trailing spaces on the line:</p>
<!-- foo -->
<p>Code:</p>
<pre><code>&lt;hr /&gt;
</code></pre>
<p>Hr's:</p>
<hr>
<hr/>
<hr />
<hr>
<hr/>
<hr />
<hr class="foo" id="bar" />
<hr class="foo" id="bar"/>
<hr class="foo" id="bar" >
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_inline_html2 do
                var test = """
Simple block on one line:

<div>foo</div>

And nested without indentation:

<div>
<div>
<div>
foo
</div>
<div style=">"/>
</div>
<div>bar</div>
</div>

And with attributes:

<div>
        <div id="foo">
        </div>
</div>

This was broken in 1.0.2b7:

<div class="inlinepage">
<div class="toggleableend">
foo
</div>
</div>
"""

                var exp = """
<p>Simple block on one line:</p>
<div>foo</div>
<p>And nested without indentation:</p>
<div>
<div>
<div>
foo
</div>
<div style=">"/>
</div>
<div>bar</div>
</div>
<p>And with attributes:</p>
<div>
    <div id="foo">
    </div>
</div>
<p>This was broken in 1.0.2b7:</p>
<div class="inlinepage">
<div class="toggleableend">
foo
</div>
</div>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_inline_html3 do
                var test = """
Paragraph one.

<!-- This is a simple comment -->

<!--
        This is another comment.
-->

Paragraph two.

<!-- one comment block -- -- with two comments -->

The end.
"""

                var exp = """
<p>Paragraph one.</p>
<!-- This is a simple comment -->
<!--
    This is another comment.
-->
<p>Paragraph two.</p>
<!-- one comment block -- -- with two comments -->
<p>The end.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_links1 do
                var test = """
Just a [URL](/url/).

[URL and title](/url/ "title").

[URL and title](/url/  "title preceded by two spaces").

[URL and title](/url/   "title preceded by a tab").

[URL and title](/url/ "title has spaces afterward"  ).

[URL wrapped in angle brackets](</url/>).

[URL w/ angle brackets + title](</url/> "Here's the title").

[Empty]().

[With parens in the URL](http://en.wikipedia.org/wiki/WIMP_(computing))

(With outer parens and [parens in url](/foo(bar)))


[With parens in the URL](/foo(bar) "and a title")

(With outer parens and [parens in url](/foo(bar) "and a title"))
"""

                var exp = """
<p>Just a <a href="/url/">URL</a>.</p>
<p><a href="/url/" title="title">URL and title</a>.</p>
<p><a href="/url/" title="title preceded by two spaces">URL and title</a>.</p>
<p><a href="/url/" title="title preceded by a tab">URL and title</a>.</p>
<p><a href="/url/" title="title has spaces afterward">URL and title</a>.</p>
<p><a href="/url/">URL wrapped in angle brackets</a>.</p>
<p><a href="/url/" title="Here&apos;s the title">URL w/ angle brackets + title</a>.</p>
<p><a href="">Empty</a>.</p>
<p><a href="http://en.wikipedia.org/wiki/WIMP_(computing)">With parens in the URL</a></p>
<p>(With outer parens and <a href="/foo(bar)">parens in url</a>)</p>
<p><a href="/foo(bar)" title="and a title">With parens in the URL</a></p>
<p>(With outer parens and <a href="/foo(bar)" title="and a title">parens in url</a>)</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_links2 do
                var test = """
Foo [bar] [1].

Foo [bar][1].

Foo [bar]
[1].

[1]: /url/  "Title"


With [embedded [brackets]] [b].


Indented [once][].

Indented [twice][].

Indented [thrice][].

Indented [four][] times.

 [once]: /url

  [twice]: /url

   [thrice]: /url

    [four]: /url


[b]: /url/

* * *

[this] [this] should work

So should [this][this].

And [this] [].

And [this][].

And [this].

But not [that] [].

Nor [that][].

Nor [that].

[Something in brackets like [this][] should work]

[Same with [this].]

In this case, [this](/somethingelse/) points to something else.

Backslashing should suppress \\\[this] and [this\\\].

[this]: foo


* * *

Here's one where the [link
breaks] across lines.

Here's another where the [link
breaks] across lines, but with a line-ending space.


[link breaks]: /url/
"""

                var exp = """
<p>Foo <a href="/url/" title="Title">bar</a>.</p>
<p>Foo <a href="/url/" title="Title">bar</a>.</p>
<p>Foo <a href="/url/" title="Title">bar</a>.</p>
<p>With <a href="/url/">embedded [brackets]</a>.</p>
<p>Indented <a href="/url">once</a>.</p>
<p>Indented <a href="/url">twice</a>.</p>
<p>Indented <a href="/url">thrice</a>.</p>
<p>Indented [four][] times.</p>
<pre><code>[four]: /url
</code></pre>
<hr/>
<p><a href="foo">this</a> should work</p>
<p>So should <a href="foo">this</a>.</p>
<p>And <a href="foo">this</a>.</p>
<p>And <a href="foo">this</a>.</p>
<p>And <a href="foo">this</a>.</p>
<p>But not [that] [].</p>
<p>Nor [that][].</p>
<p>Nor [that].</p>
<p>[Something in brackets like <a href="foo">this</a> should work]</p>
<p>[Same with <a href="foo">this</a>.]</p>
<p>In this case, <a href="/somethingelse/">this</a> points to something else.</p>
<p>Backslashing should suppress [this] and [this].</p>
<hr/>
<p>Here's one where the <a href="/url/">link
breaks</a> across lines.</p>
<p>Here's another where the <a href="/url/">link
breaks</a> across lines, but with a line-ending space.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_links3 do
                var test = """
This is the [simple case].

[simple case]: /simple



This one has a [line
break].

This one has a [line
break] with a line-ending space.

[line break]: /foo


[this] [that] and the [other]

[this]: /this
[that]: /that
[other]: /other
"""

                var exp = """
<p>This is the <a href="/simple">simple case</a>.</p>
<p>This one has a <a href="/foo">line
break</a>.</p>
<p>This one has a <a href="/foo">line
break</a> with a line-ending space.</p>
<p><a href="/that">this</a> and the <a href="/other">other</a></p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_nested do
                var test = """
> foo
>
> > bar
>
> foo
"""

                var exp = """
<blockquote>
<p>foo</p>
<blockquote>
<p>bar</p>
</blockquote>
<p>foo</p>
</blockquote>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_list do
                var test = """
## Unordered

Asterisks tight:

*       asterisk 1
*       asterisk 2
*       asterisk 3


Asterisks loose:

*       asterisk 1

*       asterisk 2

*       asterisk 3

* * *

Pluses tight:

+       Plus 1
+       Plus 2
+       Plus 3


Pluses loose:

+       Plus 1

+       Plus 2

+       Plus 3

* * *


Minuses tight:

-       Minus 1
-       Minus 2
-       Minus 3


Minuses loose:

-       Minus 1

-       Minus 2

-       Minus 3


## Ordered

Tight:

1.      First
2.      Second
3.      Third

and:

1. One
2. Two
3. Three


Loose using tabs:

1.      First

2.      Second

3.      Third

and using spaces:

1. One

2. Two

3. Three

Multiple paragraphs:

1.      Item 1, graf one.

        Item 2. graf two. The quick brown fox jumped over the lazy dog's
        back.

2.      Item 2.

3.      Item 3.



## Nested

*       Tab
        *       Tab
                *       Tab

Here's another:

1. First
2. Second:
        * Fee
        * Fie
        * Foe
3. Third

Same thing but with paragraphs:

1. First

2. Second:
        * Fee
        * Fie
        * Foe

3. Third
"""

                var exp = """
<h2 id="Unordered">Unordered</h2>
<p>Asterisks tight:</p>
<ul>
<li>asterisk 1</li>
<li>asterisk 2</li>
<li>asterisk 3</li>
</ul>
<p>Asterisks loose:</p>
<ul>
<li><p>asterisk 1</p>
</li>
<li><p>asterisk 2</p>
</li>
<li><p>asterisk 3</p>
</li>
</ul>
<hr/>
<p>Pluses tight:</p>
<ul>
<li>Plus 1</li>
<li>Plus 2</li>
<li>Plus 3</li>
</ul>
<p>Pluses loose:</p>
<ul>
<li><p>Plus 1</p>
</li>
<li><p>Plus 2</p>
</li>
<li><p>Plus 3</p>
</li>
</ul>
<hr/>
<p>Minuses tight:</p>
<ul>
<li>Minus 1</li>
<li>Minus 2</li>
<li>Minus 3</li>
</ul>
<p>Minuses loose:</p>
<ul>
<li><p>Minus 1</p>
</li>
<li><p>Minus 2</p>
</li>
<li><p>Minus 3</p>
</li>
</ul>
<h2 id="Ordered">Ordered</h2>
<p>Tight:</p>
<ol>
<li>First</li>
<li>Second</li>
<li>Third</li>
</ol>
<p>and:</p>
<ol>
<li>One</li>
<li>Two</li>
<li>Three</li>
</ol>
<p>Loose using tabs:</p>
<ol>
<li><p>First</p>
</li>
<li><p>Second</p>
</li>
<li><p>Third</p>
</li>
</ol>
<p>and using spaces:</p>
<ol>
<li><p>One</p>
</li>
<li><p>Two</p>
</li>
<li><p>Three</p>
</li>
</ol>
<p>Multiple paragraphs:</p>
<ol>
<li><p>Item 1, graf one.</p>
<p>Item 2. graf two. The quick brown fox jumped over the lazy dog's
back.</p>
</li>
<li><p>Item 2.</p>
</li>
<li><p>Item 3.</p>
</li>
</ol>
<h2 id="Nested">Nested</h2>
<ul>
<li>Tab<ul>
<li>Tab<ul>
<li>Tab</li>
</ul>
</li>
</ul>
</li>
</ul>
<p>Here's another:</p>
<ol>
<li>First</li>
<li>Second:<ul>
<li>Fee</li>
<li>Fie</li>
<li>Foe</li>
</ul>
</li>
<li>Third</li>
</ol>
<p>Same thing but with paragraphs:</p>
<ol>
<li><p>First</p>
</li>
<li><p>Second:</p>
<ul>
<li>Fee</li>
<li>Fie</li>
<li>Foe</li>
</ul>
</li>
<li><p>Third</p>
</li>
</ol>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_strong_em do
                var test = """
***This is strong and em.***

So is ***this*** word.

___This is strong and em.___

So is ___this___ word.
"""

                var exp = """
<p><strong><em>This is strong and em.</em></strong></p>
<p>So is <strong><em>this</em></strong> word.</p>
<p><strong><em>This is strong and em.</em></strong></p>
<p>So is <strong><em>this</em></strong> word.</p>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_tabs do
                var test = """
+       this is a list item
        indented with tabs

+   this is a list item
    indented with spaces

Code:

        this code block is indented by one tab

And:

                this code block is indented by two tabs

And:

        +       this is an example list item
                indented with tabs

        +   this is an example list item
            indented with spaces
"""

                var exp = """
<ul>
<li><p>this is a list item
indented with tabs</p>
</li>
<li><p>this is a list item
indented with spaces</p>
</li>
</ul>
<p>Code:</p>
<pre><code>this code block is indented by one tab
</code></pre>
<p>And:</p>
<pre><code>    this code block is indented by two tabs
</code></pre>
<p>And:</p>
<pre><code>+   this is an example list item
    indented with tabs

+   this is an example list item
    indented with spaces
</code></pre>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end

        fun test_daring_tidyness do
                var test = """
> A list within a blockquote:
>
> *     asterisk 1
> *     asterisk 2
> *     asterisk 3
"""

        var exp = """
<blockquote>
<p>A list within a blockquote:</p>
<ul>
<li>asterisk 1</li>
<li>asterisk 2</li>
<li>asterisk 3</li>
</ul>
</blockquote>
"""
                var res = test.md_to_html.write_to_string
                assert res == exp
        end


end

class TestBlock
        super TestSuite

        fun test_has_blocks do
                var subject = new MDBlock
                assert not subject.has_blocks
                subject.first_block = new MDBlock
                assert subject.has_blocks
        end

        fun test_count_blocks do
                var subject = new MDBlock
                assert subject.count_blocks == 0
                subject.first_block = new MDBlock
                assert subject.count_blocks == 1
                subject.first_block.next = new MDBlock
                assert subject.count_blocks == 2
        end

        fun test_has_lines do
                var subject = new MDBlock
                assert not subject.has_lines
                subject.first_line = new MDLine("")
                assert subject.has_lines
        end

        fun test_count_lines do
                var subject = new MDBlock
                assert subject.count_lines == 0
                subject.first_line = new MDLine("")
                assert subject.count_lines == 1
                subject.first_line.next = new MDLine("")
                assert subject.count_lines == 2
        end

        fun test_split do
                var line1 = new MDLine("line1")
                var line2 = new MDLine("line2")
                var line3 = new MDLine("line3")
                var subject = new MDBlock
                subject.add_line line1
                subject.add_line line2
                subject.add_line line3
                var block = subject.split(line2)
                assert subject.count_blocks == 1
                assert subject.count_lines == 1
                assert subject.first_line == line3
                assert block.count_blocks == 0
                assert block.count_lines == 2
                assert block.first_line == line1
                assert block.last_line == line2
        end

        fun test_add_line do
                var subject = new MDBlock
                assert subject.count_lines == 0
                subject.add_line new MDLine("")
                assert subject.count_lines == 1
                subject.add_line new MDLine("")
                assert subject.count_lines == 2
        end

        fun test_remove_line do
                var line1 = new MDLine("line1")
                var line2 = new MDLine("line2")
                var line3 = new MDLine("line3")
                var subject = new MDBlock
                subject.add_line line1
                subject.add_line line2
                subject.add_line line3
                subject.remove_line(line2)
                assert subject.count_lines == 2
                subject.remove_line(line1)
                assert subject.count_lines == 1
                assert subject.first_line == line3
                assert subject.last_line == line3
        end

        fun test_transform_headline1 do
                var subject = new MDBlock
                var kind = new BlockHeadline(subject)
                subject.add_line new MDLine(" #   Title 1   ")
                kind.transform_headline(subject)
                assert kind.depth == 1
                assert subject.first_line.value == "Title 1"
        end

        fun test_transform_headline2 do
                var subject = new MDBlock
                var kind = new BlockHeadline(subject)
                subject.add_line new MDLine(" #####Title 5   ")
                kind.transform_headline(subject)
                assert kind.depth == 5
                assert subject.first_line.value == "Title 5"
        end

        fun test_remove_quote_prefix do
                var subject = new MDBlock
                var kind = new BlockQuote(subject)
                subject.add_line new MDLine(" > line 1")
                subject.add_line new MDLine(" > line 2")
                subject.add_line new MDLine(" > line 3")
                kind.remove_block_quote_prefix(subject)
                assert subject.first_line.value == "line 1"
                assert subject.first_line.next.value == "line 2"
                assert subject.first_line.next.next.value == "line 3"
        end

        fun test_remove_leading_empty_lines_1 do
                var block = new MDBlock
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                block.add_line new MDLine("   text")
                block.add_line new MDLine("")
                assert block.remove_leading_empty_lines
                assert block.first_line.value == "   text"
        end

        fun test_remove_leading_empty_lines_2 do
                var block = new MDBlock
                block.add_line new MDLine("   text")
                block.remove_leading_empty_lines
                assert block.first_line.value == "   text"
        end

        fun test_remove_trailing_empty_lines_1 do
                var block = new MDBlock
                block.add_line new MDLine("")
                block.add_line new MDLine("text")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                assert block.remove_trailing_empty_lines
                assert block.last_line.value == "text"
        end

        fun test_remove_trailing_empty_lines_2 do
                var block = new MDBlock
                block.add_line new MDLine("text  ")
                assert not block.remove_trailing_empty_lines
                assert block.last_line.value == "text  "
        end

        fun test_remove_surrounding_empty_lines do
                var block = new MDBlock
                block.add_line new MDLine("")
                block.add_line new MDLine("text")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                block.add_line new MDLine("")
                assert block.remove_surrounding_empty_lines
                assert block.first_line.value == "text"
                assert block.last_line.value == "text"
        end
end

class TestLine
        super TestSuite

        var subject: MDLine

        init do end

        fun test_is_empty do
                subject = new MDLine("")
                assert subject.is_empty
                subject = new MDLine("    ")
                assert subject.is_empty
                subject = new MDLine("test")
                assert not subject.is_empty
                subject = new MDLine("    test")
                assert not subject.is_empty
        end

        fun test_leading do
                subject = new MDLine("")
                assert subject.leading == 0
                subject = new MDLine("    ")
                assert subject.leading == 4
                subject = new MDLine("test")
                assert subject.leading == 0
                subject = new MDLine("    test")
                assert subject.leading == 4
        end

        fun test_trailing do
                subject = new MDLine("")
                assert subject.trailing == 0
                subject = new MDLine("    ")
                assert subject.trailing == 0
                subject = new MDLine("test   ")
                assert subject.trailing == 3
                subject = new MDLine("    test ")
                assert subject.trailing == 1
        end

        fun test_line_type do
                var v = new MarkdownProcessor
                subject = new MDLine("")
                assert subject.kind(v) isa LineEmpty
                subject = new MDLine("    ")
                assert subject.kind(v) isa LineEmpty
                subject = new MDLine("text   ")
                assert subject.kind(v) isa LineOther
                subject = new MDLine("  # Title")
                assert subject.kind(v) isa LineHeadline
                subject = new MDLine("  ### Title")
                assert subject.kind(v) isa LineHeadline
                subject = new MDLine("    code")
                assert subject.kind(v) isa LineCode
                subject = new MDLine("  ~~~")
                assert subject.kind(v) isa LineFence
                subject = new MDLine("  ```")
                assert subject.kind(v) isa LineFence
                subject = new MDLine("   Title  ")
                subject.next = new MDLine("== ")
                assert subject.kind(v) isa LineHeadline1
                subject = new MDLine("   Title  ")
                subject.next = new MDLine("-- ")
                assert subject.kind(v) isa LineHeadline2
                subject = new MDLine("  *    *   * ")
                assert subject.kind(v) isa LineHR
                subject = new MDLine("  *** ")
                assert subject.kind(v) isa LineHR
                subject = new MDLine("- -- ")
                assert subject.kind(v) isa LineHR
                subject = new MDLine("--------- ")
                assert subject.kind(v) isa LineHR
                subject = new MDLine(" >")
                assert subject.kind(v) isa LineBlockquote
                subject = new MDLine("<p></p>")
                assert subject.kind(v) isa LineXML
                subject = new MDLine("<p>")
                assert subject.kind(v) isa LineOther
                subject = new MDLine("  * foo")
                assert subject.kind(v) isa LineUList
                subject = new MDLine("- foo")
                assert subject.kind(v) isa LineUList
                subject = new MDLine("+ foo")
                assert subject.kind(v) isa LineUList
                subject = new MDLine("1. foo")
                assert subject.kind(v) isa LineOList
                subject = new MDLine("   11111. foo")
                assert subject.kind(v) isa LineOList
        end

        fun test_count_chars do
                subject = new MDLine("")
                assert subject.count_chars('*') == 0
                subject = new MDLine("* ")
                assert subject.count_chars('*') == 1
                subject = new MDLine(" * text")
                assert subject.count_chars('*') == 0
                subject = new MDLine(" *    *    *")
                assert subject.count_chars('*') == 3
                subject = new MDLine("text ** ")
                assert subject.count_chars('*') == 0
        end

        fun test_count_chars_start do
                subject = new MDLine("")
                assert subject.count_chars_start('*') == 0
                subject = new MDLine("* ")
                assert subject.count_chars_start('*') == 1
                subject = new MDLine(" * text")
                assert subject.count_chars_start('*') == 1
                subject = new MDLine(" *    *    * text")
                assert subject.count_chars_start('*') == 3
                subject = new MDLine("text ** ")
                assert subject.count_chars_start('*') == 0
        end
end

class TestHTMLDecorator
        super TestSuite

        fun test_headlines do
                var test = """
# **a**
## a.a
### a.a.b
### a.a.b
## a.b
# [b](test)
## b.a
### b.a.c
## b.b
## b.c
# c
"""
                var proc = new MarkdownProcessor
                var decorator = proc.emitter.decorator.as(HTMLDecorator)
                proc.process(test)
                var res = ""
                for id, headline in decorator.headlines do
                        res += "{headline.title}:{id}\n"
                end
                var exp = """
**a**:a
a.a:a.a
a.a.b:a.a.b
a.a.b:a.a.b_1
a.b:a.b
[b](test):btest
b.a:b.a
b.a.c:b.a.c
b.b:b.b
b.c:b.c
c:c
"""
                assert res == exp
        end
end