neovim/test/unit/buffer_spec.lua

457 lines
18 KiB
Lua

local helpers = require("test.unit.helpers")(after_each)
local itp = helpers.gen_itp(it)
local to_cstr = helpers.to_cstr
local get_str = helpers.ffi.string
local eq = helpers.eq
local NULL = helpers.NULL
local globals = helpers.cimport("./src/nvim/globals.h")
local buffer = helpers.cimport("./src/nvim/buffer.h")
describe('buffer functions', function()
local buflist_new = function(file, flags)
local c_file = to_cstr(file)
return buffer.buflist_new(c_file, c_file, 1, flags)
end
local close_buffer = function(win, buf, action, abort_if_last)
return buffer.close_buffer(win, buf, action, abort_if_last)
end
local path1 = 'test_file_path'
local path2 = 'file_path_test'
local path3 = 'path_test_file'
before_each(function()
-- create the files
io.open(path1, 'w').close()
io.open(path2, 'w').close()
io.open(path3, 'w').close()
end)
after_each(function()
os.remove(path1)
os.remove(path2)
os.remove(path3)
end)
describe('buf_valid', function()
itp('should view NULL as an invalid buffer', function()
eq(false, buffer.buf_valid(NULL))
end)
itp('should view an open buffer as valid', function()
local buf = buflist_new(path1, buffer.BLN_LISTED)
eq(true, buffer.buf_valid(buf))
end)
itp('should view a closed and hidden buffer as valid', function()
local buf = buflist_new(path1, buffer.BLN_LISTED)
close_buffer(NULL, buf, 0, 0)
eq(true, buffer.buf_valid(buf))
end)
itp('should view a closed and unloaded buffer as valid', function()
local buf = buflist_new(path1, buffer.BLN_LISTED)
close_buffer(NULL, buf, buffer.DOBUF_UNLOAD, 0)
eq(true, buffer.buf_valid(buf))
end)
itp('should view a closed and wiped buffer as invalid', function()
local buf = buflist_new(path1, buffer.BLN_LISTED)
close_buffer(NULL, buf, buffer.DOBUF_WIPE, 0)
eq(false, buffer.buf_valid(buf))
end)
end)
describe('buflist_findpat', function()
local ALLOW_UNLISTED = 1
local ONLY_LISTED = 0
local buflist_findpat = function(pat, allow_unlisted)
return buffer.buflist_findpat(to_cstr(pat), NULL, allow_unlisted, 0, 0)
end
itp('should find exact matches', function()
local buf = buflist_new(path1, buffer.BLN_LISTED)
eq(buf.handle, buflist_findpat(path1, ONLY_LISTED))
close_buffer(NULL, buf, buffer.DOBUF_WIPE, 0)
end)
itp('should prefer to match the start of a file path', function()
local buf1 = buflist_new(path1, buffer.BLN_LISTED)
local buf2 = buflist_new(path2, buffer.BLN_LISTED)
local buf3 = buflist_new(path3, buffer.BLN_LISTED)
eq(buf1.handle, buflist_findpat("test", ONLY_LISTED))
eq(buf2.handle, buflist_findpat("file", ONLY_LISTED))
eq(buf3.handle, buflist_findpat("path", ONLY_LISTED))
close_buffer(NULL, buf1, buffer.DOBUF_WIPE, 0)
close_buffer(NULL, buf2, buffer.DOBUF_WIPE, 0)
close_buffer(NULL, buf3, buffer.DOBUF_WIPE, 0)
end)
itp('should prefer to match the end of a file over the middle', function()
--{ Given: Two buffers, where 'test' appears in both
-- And: 'test' appears at the end of buf3 but in the middle of buf2
local buf2 = buflist_new(path2, buffer.BLN_LISTED)
local buf3 = buflist_new(path3, buffer.BLN_LISTED)
-- Then: buf2 is the buffer that is found
eq(buf2.handle, buflist_findpat("test", ONLY_LISTED))
--}
--{ When: We close buf2
close_buffer(NULL, buf2, buffer.DOBUF_WIPE, 0)
-- And: Open buf1, which has 'file' in the middle of its name
local buf1 = buflist_new(path1, buffer.BLN_LISTED)
-- Then: buf3 is found since 'file' appears at the end of the name
eq(buf3.handle, buflist_findpat("file", ONLY_LISTED))
--}
close_buffer(NULL, buf1, buffer.DOBUF_WIPE, 0)
close_buffer(NULL, buf3, buffer.DOBUF_WIPE, 0)
end)
itp('should match a unique fragment of a file path', function()
local buf1 = buflist_new(path1, buffer.BLN_LISTED)
local buf2 = buflist_new(path2, buffer.BLN_LISTED)
local buf3 = buflist_new(path3, buffer.BLN_LISTED)
eq(buf3.handle, buflist_findpat("_test_", ONLY_LISTED))
close_buffer(NULL, buf1, buffer.DOBUF_WIPE, 0)
close_buffer(NULL, buf2, buffer.DOBUF_WIPE, 0)
close_buffer(NULL, buf3, buffer.DOBUF_WIPE, 0)
end)
itp('should include / ignore unlisted buffers based on the flag.', function()
--{ Given: A buffer
local buf3 = buflist_new(path3, buffer.BLN_LISTED)
-- Then: We should find the buffer when it is given a unique pattern
eq(buf3.handle, buflist_findpat("_test_", ONLY_LISTED))
--}
--{ When: We unlist the buffer
close_buffer(NULL, buf3, buffer.DOBUF_DEL, 0)
-- Then: It should not find the buffer when searching only listed buffers
eq(-1, buflist_findpat("_test_", ONLY_LISTED))
-- And: It should find the buffer when including unlisted buffers
eq(buf3.handle, buflist_findpat("_test_", ALLOW_UNLISTED))
--}
--{ When: We wipe the buffer
close_buffer(NULL, buf3, buffer.DOBUF_WIPE, 0)
-- Then: It should not find the buffer at all
eq(-1, buflist_findpat("_test_", ONLY_LISTED))
eq(-1, buflist_findpat("_test_", ALLOW_UNLISTED))
--}
end)
itp('should prefer listed buffers to unlisted buffers.', function()
--{ Given: Two buffers that match a pattern
local buf1 = buflist_new(path1, buffer.BLN_LISTED)
local buf2 = buflist_new(path2, buffer.BLN_LISTED)
-- Then: The first buffer is preferred when both are listed
eq(buf1.handle, buflist_findpat("test", ONLY_LISTED))
--}
--{ When: The first buffer is unlisted
close_buffer(NULL, buf1, buffer.DOBUF_DEL, 0)
-- Then: The second buffer is preferred because
-- unlisted buffers are not allowed
eq(buf2.handle, buflist_findpat("test", ONLY_LISTED))
--}
--{ When: We allow unlisted buffers
-- Then: The second buffer is still preferred
-- because listed buffers are preferred to unlisted
eq(buf2.handle, buflist_findpat("test", ALLOW_UNLISTED))
--}
--{ When: We unlist the second buffer
close_buffer(NULL, buf2, buffer.DOBUF_DEL, 0)
-- Then: The first buffer is preferred again
-- because buf1 matches better which takes precedence
-- when both buffers have the same listing status.
eq(buf1.handle, buflist_findpat("test", ALLOW_UNLISTED))
-- And: Neither buffer is returned when ignoring unlisted
eq(-1, buflist_findpat("test", ONLY_LISTED))
--}
close_buffer(NULL, buf1, buffer.DOBUF_WIPE, 0)
close_buffer(NULL, buf2, buffer.DOBUF_WIPE, 0)
end)
end)
describe('build_stl_str_hl', function()
local buffer_byte_size = 100
local STL_MAX_ITEM = 80
local output_buffer = ''
-- This function builds the statusline
--
-- @param arg Optional arguments are:
-- .pat The statusline format string
-- .fillchar The fill character used in the statusline
-- .maximum_cell_count The number of cells available in the statusline
local function build_stl_str_hl(arg)
output_buffer = to_cstr(string.rep(" ", buffer_byte_size))
local pat = arg.pat or ''
local fillchar = arg.fillchar or (' '):byte()
local maximum_cell_count = arg.maximum_cell_count or buffer_byte_size
return buffer.build_stl_str_hl(globals.curwin,
output_buffer,
buffer_byte_size,
to_cstr(pat),
false,
fillchar,
maximum_cell_count,
NULL,
NULL)
end
-- Use this function to simplify testing the comparison between
-- the format string and the resulting statusline.
--
-- @param description The description of what the test should be doing
-- @param statusline_cell_count The number of cells available in the statusline
-- @param input_stl The format string for the statusline
-- @param expected_stl The expected result string for the statusline
--
-- @param arg Options can be placed in an optional dictionary as the last parameter
-- .expected_cell_count The expected number of cells build_stl_str_hl will return
-- .expected_byte_length The expected byte length of the string
-- .file_name The name of the file to be tested (useful in %f type tests)
-- .fillchar The character that will be used to fill any 'extra' space in the stl
local function statusline_test (description,
statusline_cell_count,
input_stl,
expected_stl,
arg)
-- arg is the optional parameter
-- so we either fill in option with arg or an empty dictionary
local option = arg or {}
local fillchar = option.fillchar or (' '):byte()
local expected_cell_count = option.expected_cell_count or statusline_cell_count
local expected_byte_length = option.expected_byte_length or expected_cell_count
itp(description, function()
if option.file_name then
buffer.setfname(globals.curbuf, to_cstr(option.file_name), NULL, 1)
else
buffer.setfname(globals.curbuf, nil, NULL, 1)
end
local result_cell_count = build_stl_str_hl{pat=input_stl,
maximum_cell_count=statusline_cell_count,
fillchar=fillchar}
eq(expected_stl, get_str(output_buffer, expected_byte_length))
eq(expected_cell_count, result_cell_count)
end)
end
-- file name testing
statusline_test('should print no file name', 10,
'%f', '[No Name]',
{expected_cell_count=9})
statusline_test('should print the relative file name', 30,
'%f', 'test/unit/buffer_spec.lua',
{file_name='test/unit/buffer_spec.lua', expected_cell_count=25})
statusline_test('should print the full file name', 40,
'%F', '/test/unit/buffer_spec.lua',
{file_name='/test/unit/buffer_spec.lua', expected_cell_count=26})
-- fillchar testing
statusline_test('should handle `!` as a fillchar', 10,
'abcde%=', 'abcde!!!!!',
{fillchar=('!'):byte()})
statusline_test('should handle `~` as a fillchar', 10,
'%=abcde', '~~~~~abcde',
{fillchar=('~'):byte()})
statusline_test('should put fillchar `!` in between text', 10,
'abc%=def', 'abc!!!!def',
{fillchar=('!'):byte()})
statusline_test('should put fillchar `~` in between text', 10,
'abc%=def', 'abc~~~~def',
{fillchar=('~'):byte()})
statusline_test('should print the tail file name', 80,
'%t', 'buffer_spec.lua',
{file_name='test/unit/buffer_spec.lua', expected_cell_count=15})
-- standard text testing
statusline_test('should copy plain text', 80,
'this is a test', 'this is a test',
{expected_cell_count=14})
-- line number testing
statusline_test('should print the buffer number', 80,
'%n', '1',
{expected_cell_count=1})
statusline_test('should print the current line number in the buffer', 80,
'%l', '0',
{expected_cell_count=1})
statusline_test('should print the number of lines in the buffer', 80,
'%L', '1',
{expected_cell_count=1})
-- truncation testing
statusline_test('should truncate when standard text pattern is too long', 10,
'0123456789abcde', '<6789abcde')
statusline_test('should truncate when using =', 10,
'abcdef%=ghijkl', 'abcdef<jkl')
statusline_test('should truncate centered text when using ==', 10,
'abcde%=gone%=fghij', 'abcde<ghij')
statusline_test('should respect the `<` marker', 10,
'abc%<defghijkl', 'abc<ghijkl')
statusline_test('should truncate at `<` with one `=`, test 1', 10,
'abc%<def%=ghijklmno', 'abc<jklmno')
statusline_test('should truncate at `<` with one `=`, test 2', 10,
'abcdef%=ghijkl%<mno', 'abcdefghi>')
statusline_test('should truncate at `<` with one `=`, test 3', 10,
'abc%<def%=ghijklmno', 'abc<jklmno')
statusline_test('should truncate at `<` with one `=`, test 4', 10,
'abc%<def%=ghij', 'abcdefghij')
statusline_test('should truncate at `<` with one `=`, test 4', 10,
'abc%<def%=ghijk', 'abc<fghijk')
statusline_test('should truncate at `<` with many `=`, test 4', 10,
'ab%<cdef%=g%=h%=ijk', 'ab<efghijk')
statusline_test('should truncate at the first `<`', 10,
'abc%<def%<ghijklm', 'abc<hijklm')
-- alignment testing
statusline_test('should right align when using =', 20,
'neo%=vim', 'neo vim')
statusline_test('should, when possible, center text when using %=text%=', 20,
'abc%=neovim%=def', 'abc neovim def')
statusline_test('should handle uneven spacing in the buffer when using %=text%=', 20,
'abc%=neo_vim%=def', 'abc neo_vim def')
statusline_test('should have equal spaces even with non-equal sides when using =', 20,
'foobar%=test%=baz', 'foobar test baz')
statusline_test('should have equal spaces even with longer right side when using =', 20,
'a%=test%=longtext', 'a test longtext')
statusline_test('should handle an empty left side when using ==', 20,
'%=test%=baz', ' test baz')
statusline_test('should handle an empty right side when using ==', 20,
'foobar%=test%=', 'foobar test ')
statusline_test('should handle consecutive empty ==', 20,
'%=%=test%=', ' test ')
statusline_test('should handle an = alone', 20,
'%=', ' ')
statusline_test('should right align text when it is alone with =', 20,
'%=foo', ' foo')
statusline_test('should left align text when it is alone with =', 20,
'foo%=', 'foo ')
statusline_test('should approximately center text when using %=text%=', 21,
'abc%=neovim%=def', 'abc neovim def')
statusline_test('should completely fill the buffer when using %=text%=', 21,
'abc%=neo_vim%=def', 'abc neo_vim def')
statusline_test('should have equal spaces even with non-equal sides when using =', 21,
'foobar%=test%=baz', 'foobar test baz')
statusline_test('should have equal spaces even with longer right side when using =', 21,
'a%=test%=longtext', 'a test longtext')
statusline_test('should handle an empty left side when using ==', 21,
'%=test%=baz', ' test baz')
statusline_test('should handle an empty right side when using ==', 21,
'foobar%=test%=', 'foobar test ')
statusline_test('should quadrant the text when using 3 %=', 40,
'abcd%=n%=eovim%=ef', 'abcd n eovim ef')
statusline_test('should work well with %t', 40,
'%t%=right_aligned', 'buffer_spec.lua right_aligned',
{file_name='test/unit/buffer_spec.lua'})
statusline_test('should work well with %t and regular text', 40,
'l%=m_l %t m_r%=r', 'l m_l buffer_spec.lua m_r r',
{file_name='test/unit/buffer_spec.lua'})
statusline_test('should work well with %=, %t, %L, and %l', 40,
'%t %= %L %= %l', 'buffer_spec.lua 1 0',
{file_name='test/unit/buffer_spec.lua'})
statusline_test('should quadrant the text when using 3 %=', 41,
'abcd%=n%=eovim%=ef', 'abcd n eovim ef')
statusline_test('should work well with %t', 41,
'%t%=right_aligned', 'buffer_spec.lua right_aligned',
{file_name='test/unit/buffer_spec.lua'})
statusline_test('should work well with %t and regular text', 41,
'l%=m_l %t m_r%=r', 'l m_l buffer_spec.lua m_r r',
{file_name='test/unit/buffer_spec.lua'})
statusline_test('should work well with %=, %t, %L, and %l', 41,
'%t %= %L %= %l', 'buffer_spec.lua 1 0',
{file_name='test/unit/buffer_spec.lua'})
statusline_test('should work with 10 %=', 50,
'aaaa%=b%=c%=d%=e%=fg%=hi%=jk%=lmnop%=qrstuv%=wxyz',
'aaaa b c d e fg hi jk lmnop qrstuv wxyz')
-- maximum stl item testing
statusline_test('should handle a much larger amount of = than buffer locations', 20,
('%='):rep(STL_MAX_ITEM - 1),
' ') -- Should be fine, because within limit
statusline_test('should handle a much larger amount of = than stl max item', 20,
('%='):rep(STL_MAX_ITEM + 1),
' E541') -- Should show the VIM error
statusline_test('should handle many extra characters', 20,
'a' .. ('a'):rep(STL_MAX_ITEM * 4),
'<aaaaaaaaaaaaaaaaaaa') -- Does not show the error because there are no items
statusline_test('should handle almost maximum of characters and flags', 20,
'a' .. ('%=a'):rep(STL_MAX_ITEM - 1),
'a<aaaaaaaaaaaaaaaaaa') -- Should not show the VIM error
statusline_test('should handle many extra characters and flags', 20,
'a' .. ('%=a'):rep(STL_MAX_ITEM),
'a<aaaaaaaaaaaaa E541') -- Should show the VIM error
statusline_test('should handle many extra characters and flags', 20,
'a' .. ('%=a'):rep(STL_MAX_ITEM * 2),
'a<aaaaaaaaaaaaa E541') -- Should show the VIM error
statusline_test('should handle many extra characters and flags with truncation', 20,
'aaa%<' .. ('%=a'):rep(STL_MAX_ITEM),
'aaa<aaaaaaaaaaa E541') -- Should show the VIM error
statusline_test('should handle many characters and flags before and after truncation', 20,
'a%=a%=a%<' .. ('%=a'):rep(STL_MAX_ITEM),
'aaa<aaaaaaaaaaa E541') -- Should show the VIM error
-- multi-byte testing
statusline_test('should handle multibyte characters', 10,
'Ĉ%=x', 'Ĉ x',
{expected_byte_length=11})
statusline_test('should handle multibyte characters and different fillchars', 10,
'Ą%=mid%=end', 'Ą@mid@@end',
{fillchar=('@'):byte(), expected_byte_length=11})
end)
end)