@@ -61,6 +61,44 @@ describe('print', function()
61 61
eq('Vim(lua):E5108: Error executing lua E5114: Error while converting print argument #2: <Unknown error: lua_tolstring returned NULL for tostring result>',
62 62
pcall_err(command, 'lua print("foo", v_tblout, "bar")'))
63 63
end)
64 +
it('coerces error values into strings', function()
65 +
write_file(fname, [[
66 +
function string_error() error("my mistake") end
67 +
function number_error() error(1234) end
68 +
function nil_error() error(nil) end
69 +
function table_error() error({message = "my mistake"}) end
70 +
function custom_error()
71 +
local err = {message = "my mistake", code = 11234}
72 +
setmetatable(err, {
73 +
__tostring = function(t)
74 +
return "Internal Error [" .. t.code .. "] " .. t.message
75 +
end
76 +
})
77 +
error(err)
78 +
end
79 +
function bad_custom_error()
80 +
local err = {message = "my mistake", code = 11234}
81 +
setmetatable(err, {
82 +
-- intentionally not a function, downstream programmer has made an mistake
83 +
__tostring = "Internal Error [" .. err.code .. "] " .. err.message
84 +
})
85 +
error(err)
86 +
end
87 +
]])
88 +
eq('', exec_capture('luafile ' .. fname))
89 +
eq('Vim(lua):E5108: Error executing lua Xtest-functional-lua-overrides-luafile:0: my mistake',
90 +
pcall_err(command, 'lua string_error()'))
91 +
eq('Vim(lua):E5108: Error executing lua Xtest-functional-lua-overrides-luafile:0: 1234',
92 +
pcall_err(command, 'lua number_error()'))
93 +
eq('Vim(lua):E5108: Error executing lua [NULL]',
94 +
pcall_err(command, 'lua nil_error()'))
95 +
eq('Vim(lua):E5108: Error executing lua [NULL]',
96 +
pcall_err(command, 'lua table_error()'))
97 +
eq('Vim(lua):E5108: Error executing lua Internal Error [11234] my mistake',
98 +
pcall_err(command, 'lua custom_error()'))
99 +
eq('Vim(lua):E5108: Error executing lua [NULL]',
100 +
pcall_err(command, 'lua bad_custom_error()'))
101 +
end)
64 102
it('prints strings with NULs and NLs correctly', function()
65 103
meths.set_option('more', true)
66 104
eq('abc ^@ def\nghi^@^@^@jkl\nTEST\n\n\nT\n',
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