Given mkd (bold);
**bold** not bold

Execute (SyntaxOf(pattern)):
  AssertEqual SyntaxOf('b'), 'htmlBold'

Given mkd (italic);
*italic*

Execute (SyntaxOf(pattern)):
  AssertEqual SyntaxOf('i'), 'htmlItalic'

# Links

Given mkd;
[a](b)

Execute (link with title):
  AssertEqual SyntaxOf('a'), 'mkdLink'
  AssertEqual SyntaxOf('b'), 'mkdURL'

Given mkd;
(a)

Execute (parenthesis not in link):
  AssertNotEqual SyntaxOf('a'), 'mkdLink'

Given mkd;
[a](b) c [d](e)

Execute (multiple links on a line):
  AssertEqual SyntaxOf('c'), ''

# Math

Given mkd;
a $x$ b
c $$y$$ d
\$e\$
\$\$f\$\$

Execute (math):
  AssertNotEqual SyntaxOf('x'), 'mkdMath'
  AssertNotEqual SyntaxOf('y'), 'mkdMath'
  let g:vim_markdown_math=1
  syn off | syn on
  AssertNotEqual SyntaxOf('a'), 'mkdMath'
  AssertNotEqual SyntaxOf('b'), 'mkdMath'
  AssertNotEqual SyntaxOf('c'), 'mkdMath'
  AssertNotEqual SyntaxOf('d'), 'mkdMath'
  AssertNotEqual SyntaxOf('e'), 'mkdMath'
  AssertNotEqual SyntaxOf('f'), 'mkdMath'
  AssertEqual SyntaxOf('x'), 'mkdMath'
  AssertEqual SyntaxOf('y'), 'mkdMath'
  let g:vim_markdown_math=0
  syn off | syn on
  AssertNotEqual SyntaxOf('x'), 'mkdMath'
  AssertNotEqual SyntaxOf('y'), 'mkdMath'

Given mkd;
a

$
b
$

c

Execute (multiline math):
  let g:vim_markdown_math=1
  syn off | syn on
  AssertNotEqual SyntaxOf('a'), 'mkdMath'
  AssertEqual SyntaxOf('b'), 'mkdMath'
  AssertNotEqual SyntaxOf('c'), 'mkdMath'

# YAML frontmatter

Given mkd;
---
a: b
---

Execute (YAML frontmatter is controlled by the option):
  AssertNotEqual SyntaxOf('a'), 'yamlBlockMappingKey'
  let g:vim_markdown_frontmatter=1
  syn off | syn on
  AssertEqual SyntaxOf('a'), 'yamlBlockMappingKey'
  let g:vim_markdown_frontmatter=0
  syn off | syn on
  AssertNotEqual SyntaxOf('a'), 'yamlBlockMappingKey'

Given mkd;

---
a: b
---

Execute (YAML frontmatter only works if it's the first thing in the file):
  let g:vim_markdown_frontmatter=1
  syn off | syn on
  AssertNotEqual SyntaxOf('a'), 'yamlBlockMappingKey'

Given mkd;
---
a: b
---

---

Execute (rules are not mistaken by YAML frontmatter delimiters):
  let g:vim_markdown_frontmatter=1
  syn off | syn on
  AssertEqual SyntaxAt(5, 1), 'mkdRule'