library(testit)
assert('prose_index() works', {
x = c('a', '```', 'b', '```', 'c')
(prose_index(x) %==% c(1L, 5L))
x = c('a', '````', '```r', '1+1', '```', '````', 'c')
(prose_index(x) %==% c(1L, 7L))
x = c('a', '``', 'b', '``', 'c')
(prose_index(x) %==% seq_along(x))
# a character vector of length zero
(prose_index(character()) %==% integer())
# one backbrick
x = c('`', 'a', '`')
(prose_index(x) %==% seq_along(x))
# two backbrick
x = c('``', 'a', '``')
(prose_index(x) %==% seq_along(x))
# no code fences
x = c('a', 'b')
(prose_index(x) %==% seq_along(x))
# two code fences
x = c('```', 'b', '```', '```', 'd', '```')
(prose_index(x) %==% integer())
# code fences commented out
x = c('```', 'b', '```', '<!--```', 'd', '```-->')
(prose_index(x) %==% 4:6)
# if the code fences are not balanced
x = c('a', '```', 'b', '``', 'c')
(has_warning(prose_index(x)))
(prose_index(x) %==% seq_along(x))
# recognize ``` ``text`` ```
x = c('a', '``` md', 'b', '```', '``` ``text`` ```')
(prose_index(x) %==% c(1L, 5L))
# <pre> should also be treated as code blocks
x = c('<pre><code>```', '```', '```', '</code></pre>')
(prose_index(x) %==% integer())
})
assert('protect_math() puts inline math expressions in backticks', {
(protect_math('$x$') %==% '`\\(x\\)`')
(protect_math('$x$', '===') %==% '`===\\(x\\)===`')
(protect_math('hi $x$ a') %==% 'hi `\\(x\\)` a')
(protect_math('$ a $') %==% '$ a $')
(protect_math(' $a$') %==% ' `\\(a\\)`')
(protect_math('$ x$') %==% '$ x$')
(protect_math('$x $') %==% '$x $')
(protect_math('b$a$') %==% 'b$a$') # no space before $; unlikely to be math
(protect_math('`$a$`') %==% '`$a$`')
(protect_math('hi $x$9') %==% 'hi $x$9')
(protect_math('$500 $600') %==% '$500 $600')
(protect_math('$$a$$') %==% '`$$a$$`')
(protect_math('$$a$') %==% '$$a$')
(protect_math('hi $$\alpha$$') %==% 'hi `$$\alpha$$`')
(protect_math('hi $$\alpha $$') %==% 'hi $$\alpha $$')
(protect_math('hi $$ \alpha$$') %==% 'hi $$ \alpha$$')
(protect_math('hi $$\alpha$$ and $$ \alpha$$') %==% 'hi `$$\alpha$$` and $$ \alpha$$')
})
assert('block_attr(x) turns a character vector into Pandoc attributes', {
(block_attr(NULL) %==% '')
(block_attr('.a') %==% ' {.a}')
(block_attr('.a b="11"') %==% ' {.a b="11"}')
(block_attr(c('.a', 'b="11"')) %==% ' {.a b="11"}')
})
assert('make_fence() uses the right number of fence characters', {
(make_fence('1+1') %==% '```')
(make_fence(c('1+1', '`````')) %==% '``````')
(make_fence(':::') %==% '```')
(make_fence(':::', ':') %==% '::::')
})
assert('fenced_block() wraps content inside fences', {
(fenced_block('1+1') %==% c('', '```', '1+1', '```'))
(fenced_block('<i>info</i>', '=html') %==% c('', '``` {=html}', '<i>info</i>', '```'))
(fenced_block('1+1', c('.lang', '#id', 'foo="BAR"')) %==% c('', '``` {.lang #id foo="BAR"}', '1+1', '```'))
})
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