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local Parser = require "argparse"
getmetatable(Parser()).error = function(_, msg) error(msg) end
describe("tests related to options", function()
describe("passing correct options", function()
it("handles no options passed correctly", function()
local parser = Parser()
parser:option "-s" "--server"
local args = parser:parse({})
assert.same({}, args)
end)
it("handles one option correctly", function()
local parser = Parser()
parser:option "-s" "--server"
local args = parser:parse({"--server", "foo"})
assert.same({server = "foo"}, args)
end)
it("normalizes default target", function()
local parser = Parser()
parser:option "--from-server"
local args = parser:parse({"--from-server", "foo"})
assert.same({from_server = "foo"}, args)
end)
it("handles non-standard charset", function()
local parser = Parser()
parser:option "/s"
parser:flag "/?"
local args = parser:parse{"/s", "foo", "/?"}
assert.same({s = "foo", ["?"] = true}, args)
end)
it("handles GNU-style long options", function()
local parser = Parser()
parser:option "-s" "--server"
local args = parser:parse({"--server=foo"})
assert.same({server = "foo"}, args)
end)
it("handles GNU-style long options even when it could take more arguments", function()
local parser = Parser()
parser:option "-s" "--server" {
args = "*"
}
local args = parser:parse({"--server=foo"})
assert.same({server = {"foo"}}, args)
end)
it("handles GNU-style long options for multi-argument options", function()
local parser = Parser()
parser:option "-s" "--server" {
args = "1-2"
}
local args = parser:parse({"--server=foo", "bar"})
assert.same({server = {"foo", "bar"}}, args)
end)
it("handles short option correctly", function()
local parser = Parser()
parser:option "-s" "--server"
local args = parser:parse({"-s", "foo"})
assert.same({server = "foo"}, args)
end)
it("handles flag correctly", function()
local parser = Parser()
parser:flag "-q" "--quiet"
local args = parser:parse({"--quiet"})
assert.same({quiet = true}, args)
args = parser:parse({})
assert.same({}, args)
end)
it("handles combined flags correctly", function()
local parser = Parser()
parser:flag "-q" "--quiet"
parser:flag "-f" "--fast"
local args = parser:parse({"-qf"})
assert.same({quiet = true, fast = true}, args)
end)
it("handles short options without space between option and argument", function()
local parser = Parser()
parser:option "-s" "--server"
local args = parser:parse({"-sfoo"})
assert.same({server = "foo"}, args)
end)
it("handles flags combined with short option correctly", function()
local parser = Parser()
parser:flag "-q" "--quiet"
parser:option "-s" "--server"
local args = parser:parse({"-qsfoo"})
assert.same({quiet = true, server = "foo"}, args)
end)
it("interprets extra option arguments as positional arguments", function()
local parser = Parser()
parser:argument "input"
:args "2+"
parser:option "-s" "--server"
local args = parser:parse{"foo", "-sFROM", "bar"}
assert.same({input = {"foo", "bar"}, server = "FROM"}, args)
end)
it("does not interpret extra option arguments as other option's arguments", function()
local parser = Parser()
parser:argument "output"
parser:option "--input"
:args "+"
parser:option "-s" "--server"
local args = parser:parse{"--input", "foo", "-sFROM", "bar"}
assert.same({input = {"foo"}, server = "FROM", output = "bar"}, args)
end)
it("does not pass arguments to options after double hyphen", function()
local parser = Parser()
parser:argument "input"
:args "?"
parser:option "--exclude"
:args "*"
local args = parser:parse{"--exclude", "--", "foo"}
assert.same({input = "foo", exclude = {}}, args)
end)
it("does not interpret options if disabled", function()
local parser = Parser()
parser:handle_options(false)
parser:argument "input"
:args "*"
parser:option "-f" "--foo"
:args "*"
local args = parser:parse{"bar", "-f", "--foo" , "bar"}
assert.same({input = {"bar", "-f", "--foo" , "bar"}}, args)
end)
it("allows using -- as an option", function()
local parser = Parser()
parser:flag "--unrelated"
parser:option "--"
:args "*"
:target "tail"
local args = parser:parse{"--", "foo", "--unrelated", "bar"}
assert.same({tail = {"foo", "--unrelated", "bar"}}, args)
end)
it("handles hidden option aliases", function()
local parser = Parser()
parser:option "--server"
:hidden_name "--from"
local args = parser:parse{"--from", "foo"}
assert.same({server = "foo"}, args)
end)
describe("Special chars set", function()
it("handles windows-style options", function()
local parser = Parser()
:add_help(false)
parser:option "\\I"
:count "*"
:target "include"
local args = parser:parse{"\\I", "src", "\\I", "misc"}
assert.same({include = {"src", "misc"}}, args)
end)
it("corrects charset in commands", function()
local parser = Parser "name"
:add_help(false)
parser:flag "-v" "--verbose"
:count "*"
parser:command "deep"
:add_help(false)
:option "/s"
local args = parser:parse{"-v", "deep", "/s", "foo", "-vv"}
assert.same({verbose = 3, deep = true, s = "foo"}, args)
end)
end)
describe("Options with optional argument", function()
it("handles emptiness correctly", function()
local parser = Parser()
parser:option("-p --password", "Secure password for special security", nil, nil, "?")
local args = parser:parse({})
assert.same({}, args)
end)
it("handles option without argument correctly", function()
local parser = Parser()
parser:option "-p" "--password" {
args = "?"
}
local args = parser:parse({"-p"})
assert.same({password = {}}, args)
end)
it("handles option with argument correctly", function()
local parser = Parser()
parser:option "-p" "--password" {
args = "?"
}
local args = parser:parse({"-p", "password"})
assert.same({password = {"password"}}, args)
end)
end)
it("handles multi-argument options correctly", function()
local parser = Parser()
parser:option "--pair" {
args = 2
}
local args = parser:parse({"--pair", "Alice", "Bob"})
assert.same({pair = {"Alice", "Bob"}}, args)
end)
describe("Multi-count options", function()
it("handles multi-count option correctly", function()
local parser = Parser()
parser:option "-e" "--exclude" {
count = "*"
}
local args = parser:parse({"-efoo", "--exclude=bar", "-e", "baz"})
assert.same({exclude = {"foo", "bar", "baz"}}, args)
end)
it("handles not used multi-count option correctly", function()
local parser = Parser()
parser:option "-e" "--exclude" {
count = "*"
}
local args = parser:parse({})
assert.same({exclude = {}}, args)
end)
it("handles multi-count multi-argument option correctly", function()
local parser = Parser()
parser:option "-e" "--exclude" {
count = "*",
args = 2
}
local args = parser:parse({"-e", "Alice", "Bob", "-e", "Emma", "Jacob"})
assert.same({exclude = {{"Alice", "Bob"}, {"Emma", "Jacob"}}}, args)
end)
it("handles multi-count flag correctly", function()
local parser = Parser()
parser:flag "-q" "--quiet" {
count = "*"
}
local args = parser:parse({"-qq", "--quiet"})
assert.same({quiet = 3}, args)
end)
it("overwrites old invocations", function()
local parser = Parser()
parser:option "-u" "--user" {
count = "0-2"
}
local args = parser:parse({"-uAlice", "--user=Bob", "--user", "John"})
assert.same({user = {"Bob", "John"}}, args)
end)
it("handles not used multi-count flag correctly", function()
local parser = Parser()
parser:flag "-q" "--quiet" {
count = "*"
}
local args = parser:parse({})
assert.same({quiet = 0}, args)
end)
end)
end)
describe("passing incorrect options", function()
it("handles lack of required argument correctly", function()
local parser = Parser()
parser:option "-s" "--server"
assert.has_error(function() parser:parse{"--server"} end, "option '--server' requires an argument")
assert.has_error(function() parser:parse{"-s"} end, "option '-s' requires an argument")
end)
it("handles unknown options correctly", function()
local parser = Parser()
:add_help(false)
parser:option "--option"
assert.has_error(function() parser:parse{"--server"} end, "unknown option '--server'")
assert.has_error(function() parser:parse{"--server=localhost"} end, "unknown option '--server'")
assert.has_error(function() parser:parse{"-s"} end, "unknown option '-s'")
assert.has_error(function() parser:parse{"-slocalhost"} end, "unknown option '-s'")
end)
it("handles too many arguments correctly", function()
local parser = Parser()
parser:option "-s" "--server"
assert.has_error(function()
parser:parse{"-sfoo", "bar"}
end, "too many arguments")
end)
it("handles invalid argument choices correctly", function()
local parse = Parser()
parse:option "-s" "--server" {
choices = {"foo", "bar", "baz"}
}
assert.has_error(function()
parse:parse{"-slocalhost"}
end, "argument for option '-s' must be one of 'foo', 'bar', 'baz'")
end)
it("doesn't accept GNU-like long options when it doesn't need arguments", function()
local parser = Parser()
parser:flag "-q" "--quiet"
assert.has_error(function()
parser:parse{"--quiet=very_quiet"}
end, "option '--quiet' does not take arguments")
end)
it("handles too many invocations correctly", function()
local parser = Parser()
parser:flag "-q" "--quiet" {
count = 1,
overwrite = false
}
assert.has_error(function()
parser:parse{"-qq"}
end, "option '-q' must be used 1 time")
end)
it("handles too few invocations correctly", function()
local parser = Parser()
parser:option "-f" "--foo" {
count = "3-4"
}
assert.has_error(function()
parser:parse{"-fFOO", "--foo=BAR"}
end, "option '--foo' must be used at least 3 times")
assert.has_error(
function() parser:parse{}
end, "missing option '-f'")
end)
end)
end)
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