moonscript/spec/error_rewriting_spec.moon

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moonscript = require "moonscript.base"
errors = require "moonscript.errors"
util = require "moonscript.util"
import unindent from require "spec.helpers"
get_rewritten_line_no = (fname) ->
fname = "spec/error_inputs/#{fname}.moon"
chunk = moonscript.loadfile fname
success, err = pcall chunk
error "`#{fname}` is supposed to have runtime error!" if success
source = tonumber err\match "^.-:(%d+):"
line_table = assert require("moonscript.line_tables")["@#{fname}"], "missing line table"
errors.reverse_line_number fname, line_table, source, {}
-- TODO: check entire stack trace
describe "error rewriting", ->
tests = {
"first": 24
"second": 16
"third": 11
}
for name, expected_no in pairs tests
it "should rewrite line number", ->
assert.same get_rewritten_line_no(name), expected_no
describe "line map", ->
import to_lua from require "moonscript.base"
it "should create line table", ->
moon_code = unindent [[
print "hello world"
if something
print "cats"
]]
lua_code, posmap = assert to_lua moon_code
-- print util.debug_posmap(posmap, moon_code, lua_code)
assert.same { 7, 29, 42, 27 }, posmap
it "should create line table for multiline string", ->
moon_code = unindent [[
print "one"
x = [==[
one
two
thre
yes
no
]==]
print "two"
]]
lua_code, posmap = assert to_lua moon_code
-- print util.debug_posmap(posmap, moon_code, lua_code)
assert.same {[1]: 7, [2]: 19, [7]: 19, [8]: 63}, posmap