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--
-- Tests for the doclayout module
--
local doclayout = require 'doclayout'
local tasty = require 'tasty'
local group = tasty.test_group
local test = tasty.test_case
local assert = tasty.assert
-- Check existence static fields
return {
group 'constructors' {
test('empty', function ()
assert.are_equal(type(doclayout.empty), 'userdata')
end),
test('blankline', function ()
assert.are_equal(type(doclayout.blankline), 'userdata')
end),
test('cr', function ()
assert.are_equal(type(doclayout.cr), 'userdata')
end),
test('space', function ()
assert.are_equal(type(doclayout.space), 'userdata')
end),
test('chomp', function ()
local doc = 'a' .. doclayout.blanklines(2)
assert.are_equal(doclayout.chomp(doc), doclayout.literal 'a')
end),
test('nestle', function ()
local doc = doclayout.blanklines(3) .. 'a'
assert.are_equal(doclayout.nestle(doc), doclayout.literal 'a')
end),
group 'enclosing' {
test('quotes', function ()
local doc = doclayout.literal 'single'
assert.are_equal(
doclayout.quotes(doc),
"'" .. doclayout.literal 'single' .. "'"
)
end),
test('double quotes', function ()
local doc = doclayout.literal 'double'
assert.are_equal(
doclayout.double_quotes(doc),
'"' .. doclayout.literal 'double' .. '"'
)
end),
test('inside', function ()
local doc = doclayout.literal 'Hello,' + 'World!'
assert.are_equal(
doclayout.inside(doc, 'Yo! ', ' Wassup?'),
'Yo! ' .. doc .. ' Wassup?'
)
end),
},
group 'concat' {
test('with sep', function ()
local list = {
doclayout.literal 'one',
doclayout.literal 'two',
doclayout.literal 'three'
}
local sep = doclayout.cr
assert.are_equal(
doclayout.concat(list, sep),
list[1] .. sep .. list[2] .. sep .. list[3])
end),
test('without sep', function ()
local list = {
doclayout.literal 'one',
doclayout.literal 'two',
doclayout.literal 'three'
}
assert.are_equal(doclayout.concat(list), list[1] .. list[2] .. list[3])
end),
},
},
group 'render' {
test('empty doc', function ()
assert.are_equal(doclayout.render(doclayout.empty), '')
end),
test('reflow', function ()
local greeting = doclayout.literal 'Hi!' .. doclayout.space
.. doclayout.literal 'How' .. doclayout.space
.. doclayout.literal 'are' .. doclayout.space
.. doclayout.literal 'you?'
assert.are_equal(greeting:render(7), 'Hi! How\nare\nyou?')
end),
test('after_break', function ()
local doc = doclayout.literal 'hi'
+ doclayout.after_break '!'
.. doclayout.after_break '?'
.. doclayout.literal 'x'
.. doclayout.after_break '?'
assert.are_equal(doc:render(2), 'hi\n!x')
end),
test('before_non_blank', function ()
local doc = doclayout.before_non_blank '!!' .. ' ab'
/ doclayout.before_non_blank '!!' .. 'a b'
assert.are_equal(doclayout.render(doc), ' ab\n!!a b')
end),
test('blanks at beginning', function ()
local doc = doclayout.blanklines(2) .. 'aa'
-- only one newline, as the top of doc is treated as implicit blank
assert.are_equal(doclayout.render(doc), '\naa')
end),
test('blanklines', function ()
local doc = 'aa' .. doclayout.blanklines(2) .. 'bb'
assert.are_equal(doclayout.render(doc), 'aa\n\n\nbb')
end),
test('braces', function ()
local doc = doclayout.braces 'maybe'
assert.are_equal(doclayout.render(doc), '{maybe}')
end),
test('brackets', function ()
local doc = doclayout.brackets '1'
assert.are_equal(doclayout.render(doc), '[1]')
end),
test('flush', function ()
local doc = doclayout.flush(doclayout.nest('hi', 2))
assert.are_equal(doclayout.render(doc), 'hi')
end),
test('hang', function ()
local doc = doclayout.hang('aa\nbb\ncc', 4, ' - ')
assert.are_equal(
doclayout.render(doc),
table.concat{
' - aa\n',
' bb\n',
' cc',
}
)
end),
test('nest', function ()
local doc = doclayout.nest('aa\n\nbb\ncc', 2)
assert.are_equal(
doclayout.render(doc),
table.concat{
' aa\n',
'\n',
' bb\n',
' cc'
}
)
end),
test('nowrap', function()
local doc = doclayout.nowrap(doclayout.literal 'first' + 'second')
assert.are_equal(doc:render(8), 'first second')
end),
test('parens', function ()
local doc = doclayout.parens 'lisp'
assert.are_equal(doclayout.render(doc), '(lisp)')
-- as method
assert.are_equal(doc:parens():render(), '((lisp))')
end),
test('prefixed', function ()
local doc = doclayout.prefixed(doclayout.literal 'aa' // 'bb', '# ' )
assert.are_equal(doclayout.render(doc), '# aa\n#\n# bb')
-- as method
assert.are_equal(
(doclayout.literal'aa' // 'bb'):prefixed('# '):render(),
'# aa\n#\n# bb'
)
end),
group 'table helpers' {
test('cblock', function ()
local doc = doclayout.cblock('| ', 2)
.. doclayout.cblock('aa', 4)
.. doclayout.cblock(' |', 2)
assert.are_equal(doclayout.render(doc), '| aa |')
end),
test('lblock', function ()
local doc = doclayout.lblock('| ', 2)
.. doclayout.lblock('aa', 4)
.. doclayout.lblock(' |', 2)
assert.are_equal(doclayout.render(doc), '| aa |')
end),
test('rblock', function ()
local doc = doclayout.rblock('| ', 2)
.. doclayout.rblock('aa', 4)
.. doclayout.rblock(' |', 2)
assert.are_equal(doclayout.render(doc), '| aa |')
end),
test('vfill', function ()
local doc = doclayout.vfill '| '
.. doclayout.lblock(doclayout.literal 'aa' // 'bbb', 4)
.. doclayout.vfill(' |')
assert.are_equal(
doclayout.render(doc),
table.concat{
'| aa |\n',
'| |\n',
'| bbb |'
}
)
end)
}
},
group 'document querying' {
test('is_empty', function ()
assert.is_truthy(doclayout.is_empty(doclayout.empty))
assert.is_truthy(doclayout.is_empty(''))
assert.is_falsy(doclayout.is_empty('non-empty'))
end),
test('height', function ()
assert.are_equal(doclayout.height(doclayout.empty), 1)
assert.are_equal(doclayout.height('line'), 1)
assert.are_equal(doclayout.height(doclayout.literal 'p' / 'q'), 2)
assert.are_equal(doclayout.height(doclayout.literal 'p' // 'q'), 3)
end),
test('min_offset', function ()
assert.are_equal(doclayout.min_offset 'four', 4)
assert.are_equal(
doclayout.min_offset(doclayout.literal 'four' + 'radio'),
5
)
end),
test('offset', function ()
assert.are_equal(doclayout.offset 'four', 4)
assert.are_equal(doclayout.offset(doclayout.literal 'four' / 'radio'), 5)
end),
test('real_length', function ()
assert.are_equal(doclayout.real_length(''), 0)
assert.are_equal(doclayout.real_length('a'), 1)
assert.are_equal(doclayout.real_length('❄'), 1)
assert.are_equal(doclayout.real_length('シ'), 2)
assert.are_equal(doclayout.real_length('four'), 4)
end),
test('update_column', function ()
local doc = 'long' .. doclayout.cr .. 'longer'
assert.are_equal(doclayout.update_column(doc, 0), 6)
-- fails with doclayout < 0.4:
-- assert.are_equal(doclayout.update_column(doclayout.empty, 42), 42)
assert.are_equal(doclayout.update_column('four', 4), 8)
end)
},
group 'Doc type' {
test('empty strings equal the empty Doc', function ()
assert.are_equal(doclayout.empty .. '', doclayout.empty)
end),
test('strings can be used as Doc values', function ()
assert.are_equal(doclayout.render('hello world'), 'hello world')
end),
test('numbers can be used as Doc values', function ()
assert.are_equal(doclayout.render(42), '42')
end),
test('equality', function ()
assert.is_truthy(doclayout.literal "true", doclayout.literal "true")
end),
test('concatenate docs', function ()
assert.are_equal(
tostring(doclayout.literal 'Rock-' .. doclayout.literal 'Ola'),
'Rock-Ola'
)
end),
test('has tostring method', function ()
local str = 'just a literal string for now'
assert.are_equal(tostring(str), str)
end),
test('adding concatenates with space', function ()
local helloworld = doclayout.literal 'Hello,'
.. doclayout.space
.. doclayout.literal 'World'
assert.are_equal(doclayout.literal 'Hello,' + 'World', helloworld)
end),
test('dividing sets the first above the second', function ()
local first = doclayout.literal 'first'
local second = doclayout.literal 'second'
assert.are_equal(first / second, first .. doclayout.cr .. second)
end),
test('// separates docs with blank line', function ()
local first = doclayout.literal 'first'
local second = doclayout.literal 'second'
assert.are_equal(first // second, first .. doclayout.blankline .. second)
end),
}
}
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