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tests/indent: improve assertion to print side-by-side diff

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Jędrzej Boczar 2021-04-19 01:08:58 +02:00 • committed by Kiyan
parent 9f8ff8f6b6
commit dfcefb3895
1 changed files with 24 additions and 12 deletions
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36
lua/nvim-treesitter/test_utils.lua
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@ -8,39 +8,51 @@ local function same_indent(state, arguments)
local after = arguments[2] local after = arguments[2]
local ok = true local ok = true
errors = { before = {}, after = {} } local errors = { before = {}, after = {} }
for line = 1,#before do for line = 1,#before do
if before[line] ~= after[line] then if before[line] ~= after[line] then
-- store the actual indentation length for each line
errors.before[line] = #string.match(before[line], '^%s*') errors.before[line] = #string.match(before[line], '^%s*')
errors.after[line] = #string.match(after[line], '^%s*') errors.after[line] = #string.match(after[line], '^%s*')
ok = false ok = false
end end
end end
-- swap arguments to be consistent with all the assertions in plenary.luassert -- we will always use only a single argument, passing the other one in fmtargs
table.insert(arguments, 1, table.remove(arguments, 2)) arguments.fmtargs = { { errors = errors, other = after } }
arguments.fmtargs = {} arguments.fmtargs[2] = { errors = errors, other = after }
arguments.fmtargs[1] = { errors = errors.after }
arguments.fmtargs[2] = { errors = errors.before }
return ok return ok
end end
local function format_indent(arg, fmtargs) local function format_indent(arg, fmtargs)
local output = {} -- find minimal width if any line is longer
local width = 40
for _, line in ipairs(fmtargs.other) do
width = #line > width and #line or width
end
width = width + 3
local header_fmt = '%8s %2s%-' .. tostring(width + 1) .. 's %s'
local fmt = '%8s %2s |%-' .. tostring(width) .. 's |%s'
local output = {header_fmt:format('', '', 'Found:', 'Expected:')}
for i, line in ipairs(arg) do for i, line in ipairs(arg) do
if fmtargs.errors[i] then if fmtargs.errors.before[i] then
table.insert(output, string.format('%2d => |%s', fmtargs.errors[i], line)) local indents = string.format('%d vs %d', fmtargs.errors.after[i], fmtargs.errors.before[i])
table.insert(output, fmt:format(indents, '=>', fmtargs.other[i], line))
else else
table.insert(output, string.format(' |%s', line)) table.insert(output, fmt:format('', '', fmtargs.other[i], line))
end end
end end
return table.concat(output, '\n') return table.concat(output, '\n')
end end
say:set_namespace('en') say:set_namespace('en')
say:set('assertion.same_indent.positive', 'Expected indentation to be the same.\nFound:\n%s\nExpected:\n%s') say:set('assertion.same_indent.positive', 'Incorrect indentation\n%s')
say:set('assertion.same_indent.negative', 'Expected indentation to be different.\nFound:\n%s\nExpected:\n%s') say:set('assertion.same_indent.negative', 'Incorrect indentation\n%s')
assert:register('assertion', 'same_indent', same_indent, assert:register('assertion', 'same_indent', same_indent,
'assertion.same_indent.positive', 'assert.same_indent.negative') 'assertion.same_indent.positive', 'assert.same_indent.negative')