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local M = {}
local assert = require('luassert')
function M.set_buf_indent_opts(opts)
local optnames = {'tabstop', 'shiftwidth', 'softtabstop', 'expandtab', 'filetype'}
for _, opt in ipairs(optnames) do
if opts[opt] ~= nil then
vim.bo[opt] = opts[opt]
end
end
end
function M.run_indent_test(file, runner, opts)
assert.are.same(1, vim.fn.filereadable(file))
-- load reference file
vim.cmd(string.format('edit %s', file))
local before = vim.api.nvim_buf_get_lines(0, 0, -1, true)
-- FIXME: why this is not set automatically?
vim.bo.indentexpr = 'nvim_treesitter#indent()'
assert.are.same('nvim_treesitter#indent()', vim.bo.indentexpr)
M.set_buf_indent_opts(opts)
-- perform the test
runner()
-- get file content after the test
local after = vim.api.nvim_buf_get_lines(0, 0, -1, true)
-- clear any changes to avoid 'No write since last change (add ! to override)'
vim.cmd 'edit!'
return before, after
end
function M.indent_whole_file(file, opts)
local before, after = M.run_indent_test(file, function()
vim.cmd 'silent normal gg=G'
end, opts)
assert.are.same(before, after)
end
-- Open a file, use `normal o` to insert a new line and compare results
-- @param file path to the initial file
-- @param spec a table with keys:
-- on_line: line on which `normal o` is executed
-- text: text inserted in the new line
-- indent: expected indent before the inserted text (string or int)
-- @param opts buffer options passed to M.set_buf_indent_opts
function M.indent_new_line(file, spec, opts)
local before, after = M.run_indent_test(file, function()
-- move to the line and input the new one
vim.cmd(string.format('normal! %dG', spec.on_line))
vim.cmd(string.format('normal! o%s', spec.text))
end, opts)
local indent = type(spec.indent) == 'string' and spec.indent or string.rep(' ', spec.indent)
-- print('# before:\n', table.concat(before, '\n'))
-- print('# after:\n', table.concat(after, '\n'))
table.insert(before, spec.on_line + 1, indent .. spec.text)
assert.are.same(before, after)
end
return M
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