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ladybird/Tests/LibCore/TestLibCoreArgsParser.cpp
vincent-rg a9df60ff1c AK: Update OptionParser::m_arg_index by substracting skipped args 
On argument swapping to put positional ones toward the end,
m_arg_index was pointing at "last arg  index" + "skipped args" +
"consumed args" and thus was pointing ahead of the skipped ones.

m_arg_index now points after the current parsed option arguments.
2024-02-06 00:08:30 +01:00

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/*
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Function.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibTest/TestCase.h>
class ParserResult {
public:
ParserResult(Vector<StringView> arguments)
: arguments(move(arguments))
{
}
ParserResult(ParserResult&& other)
{
arguments = move(other.arguments);
result = other.result;
}
ParserResult& operator=(ParserResult&& other)
{
if (this != &other) {
arguments = move(other.arguments);
result = other.result;
}
return *this;
}
Vector<StringView> arguments;
bool result { false };
};
static ParserResult run_parser(Vector<StringView> arguments, Function<void(Core::ArgsParser&)> parser_initialization = {})
{
Core::ArgsParser parser;
if (parser_initialization)
parser_initialization(parser);
auto parse_result = ParserResult { move(arguments) };
parse_result.result = parser.parse(parse_result.arguments, Core::ArgsParser::FailureBehavior::Ignore);
return parse_result;
}
TEST_CASE(no_arguments)
{
auto parser_result = run_parser({ "app"sv });
EXPECT_EQ(parser_result.result, true);
}
TEST_CASE(bool_option)
{
// Short option
bool force = false;
auto parser_result = run_parser({ "app"sv, "-f"sv }, [&](auto& parser) {
parser.add_option(force, "force", nullptr, 'f');
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(force, true);
// Short option, not given
force = false;
parser_result = run_parser({ "app"sv }, [&](auto& parser) {
parser.add_option(force, "force", nullptr, 'f');
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(force, false);
// Long option
force = false;
parser_result = run_parser({ "app"sv, "--force"sv }, [&](auto& parser) {
parser.add_option(force, "force", "force", '\0');
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(force, true);
// Long option, not given
force = false;
parser_result = run_parser({ "app"sv }, [&](auto& parser) {
parser.add_option(force, "force", "force", '\0');
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(force, false);
// Allow both short and long option, provide short
force = false;
parser_result = run_parser({ "app"sv, "-f"sv }, [&](auto& parser) {
parser.add_option(force, "force", "force", 'f');
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(force, true);
// Allow both short and long option, provide long
force = false;
parser_result = run_parser({ "app"sv, "--force"sv }, [&](auto& parser) {
parser.add_option(force, "force", "force", 'f');
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(force, true);
// Allow both short and long option, provide both
force = false;
parser_result = run_parser({ "app"sv, "--force"sv, "-f"sv }, [&](auto& parser) {
parser.add_option(force, "force", "force", 'f');
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(force, true);
}
TEST_CASE(string_option)
{
ByteString string_option;
// short option
auto parser_result = run_parser({ "app"sv, "-d"sv, "foo"sv }, [&](auto& parser) {
parser.add_option(string_option, "dummy", nullptr, 'd', "DUMMY");
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(string_option, "foo");
// short option, not given
string_option = "";
parser_result = run_parser({ "app"sv, "-d"sv }, [&](auto& parser) {
parser.add_option(string_option, "dummy", nullptr, 'd', "DUMMY");
});
EXPECT_EQ(parser_result.result, false);
// long option
string_option = "";
parser_result = run_parser({ "app"sv, "--dummy"sv, "foo"sv }, [&](auto& parser) {
parser.add_option(string_option, "dummy", "dummy", {}, "DUMMY");
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(string_option, "foo");
// long option, not given
string_option = "";
parser_result = run_parser({ "app"sv, "--dummy"sv }, [&](auto& parser) {
parser.add_option(string_option, "dummy", "dummy", {}, "DUMMY");
});
EXPECT_EQ(parser_result.result, false);
}
TEST_CASE(positional_string_argument)
{
// Single required string argument
ByteString name = "";
auto parser_result = run_parser({ "app"sv, "buggie"sv }, [&](auto& parser) {
parser.add_positional_argument(name, "name", "name", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(name, "buggie");
// Single required string argument, not given
name = "";
parser_result = run_parser({ "app"sv }, [&](auto& parser) {
parser.add_positional_argument(name, "name", "name", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, false);
EXPECT_EQ(name, "");
// Single optional string argument
name = "";
parser_result = run_parser({ "app"sv, "buggie"sv }, [&](auto& parser) {
parser.add_positional_argument(name, "name", "name", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(name, "buggie");
// Single optional string argument, not given
name = "";
parser_result = run_parser({ "app"sv }, [&](auto& parser) {
parser.add_positional_argument(name, "name", "name", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(name, "");
}
TEST_CASE(positional_vector_string_argument)
{
Vector<StringView> values;
// Zero or more positional arguments, zero given
auto parser_result = run_parser({ "app"sv }, [&](auto& parser) {
parser.add_positional_argument(values, "values", "values", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(values.size(), 0u);
// Zero or more positional arguments, one given
values = {};
parser_result = run_parser({ "app"sv, "one"sv }, [&](auto& parser) {
parser.add_positional_argument(values, "values", "values", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(values.size(), 1u);
if (values.size() == 1u)
EXPECT_EQ(values[0], "one");
// Zero or more positional arguments, two given
values = {};
parser_result = run_parser({ "app"sv, "one"sv, "two"sv }, [&](auto& parser) {
parser.add_positional_argument(values, "values", "values", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(values.size(), 2u);
if (values.size() == 2u) {
EXPECT_EQ(values[0], "one");
EXPECT_EQ(values[1], "two");
}
// One or more positional arguments, zero given
values = {};
parser_result = run_parser({ "app"sv }, [&](auto& parser) {
parser.add_positional_argument(values, "values", "values", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, false);
EXPECT_EQ(values.size(), 0u);
// One or more positional arguments, one given
values = {};
parser_result = run_parser({ "app"sv, "one"sv }, [&](auto& parser) {
parser.add_positional_argument(values, "values", "values", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(values.size(), 1u);
if (values.size() == 1u)
EXPECT_EQ(values[0], "one");
// One or more positional arguments, two given
values = {};
parser_result = run_parser({ "app"sv, "one"sv, "two"sv }, [&](auto& parser) {
parser.add_positional_argument(values, "values", "values", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(values.size(), 2u);
if (values.size() == 2u) {
EXPECT_EQ(values[0], "one");
EXPECT_EQ(values[1], "two");
}
}
TEST_CASE(combination_of_bool_options_with_positional_vector_string)
{
Vector<StringView> positionals;
// Bool options (given) and positional arguments (given)
// Expected: all arguments fill as given
bool bool_opt1 = false;
bool bool_opt2 = false;
auto parser_result = run_parser({ "app"sv, "-b"sv, "-c"sv, "one"sv, "two"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(positionals.size(), 2u);
if (positionals.size() == 2u) {
EXPECT_EQ(positionals[0], "one");
EXPECT_EQ(positionals[1], "two");
}
// Bool options (missing) and positional arguments (given)
// Expected: only the positional arguments are filled
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "one"sv, "two"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, false);
EXPECT_EQ(bool_opt2, false);
EXPECT_EQ(positionals.size(), 2u);
if (positionals.size() == 2u) {
EXPECT_EQ(positionals[0], "one");
EXPECT_EQ(positionals[1], "two");
}
// Bool options (given) and positional arguments (missing)
// Expected: only the bool options are filled
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "-b"sv, "-c"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(positionals.size(), 0u);
// Bool options (missing) and positional arguments (given) using double dash
// Expected: the bool options are interpreted as positional arguments
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "--"sv, "-b"sv, "-c"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, false);
EXPECT_EQ(bool_opt2, false);
EXPECT_EQ(positionals.size(), 2u);
if (positionals.size() == 2u) {
EXPECT_EQ(positionals[0], "-b");
EXPECT_EQ(positionals[1], "-c");
}
// Bool options (one given) and positional arguments (one given) using double dash
// Expected: bool_opt1 is set, one positional is added
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "-b"sv, "--"sv, "-c"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, false);
EXPECT_EQ(positionals.size(), 1u);
if (positionals.size() == 1u) {
EXPECT_EQ(positionals[0], "-c");
}
// Bool options (three given, one incorrect) and positional arguments (missing)
// Expected: parser fails
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "-b"sv, "-d"sv, "-c"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, false);
}
TEST_CASE(combination_of_bool_and_string_short_options_with_positional_vector_string)
{
// #22759: Positional arguments were sometimes incorrectly not shifted, leading to an incorrect parse.
// Bool options (given), string options (given) and one positional argument (given)
// Expected: all arguments fill as given
bool bool_opt1 = false;
bool bool_opt2 = false;
ByteString string_opt1;
ByteString string_opt2;
Vector<StringView> positionals;
auto parser_result = run_parser({ "app"sv, "-b"sv, "-c"sv, "-d"sv, "foo"sv, "-e"sv, "bar"sv, "one"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_option(string_opt1, "string_opt1", nullptr, 'd', "D");
parser.add_option(string_opt2, "string_opt2", nullptr, 'e', "E");
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(string_opt1, "foo");
EXPECT_EQ(string_opt2, "bar");
EXPECT_EQ(positionals.size(), 1u);
if (positionals.size() == 1u) {
EXPECT_EQ(positionals[0], "one");
}
// Bool options (given), string options (given) and one positional argument (given)
// one bool option after positional
// Expected: all arguments fill as given
bool_opt1 = false;
bool_opt2 = false;
string_opt1 = "";
string_opt2 = "";
positionals = {};
parser_result = run_parser({ "app"sv, "-c"sv, "-d"sv, "foo"sv, "-e"sv, "bar"sv, "one"sv, "-b"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_option(string_opt1, "string_opt1", nullptr, 'd', "D");
parser.add_option(string_opt2, "string_opt2", nullptr, 'e', "E");
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(string_opt1, "foo");
EXPECT_EQ(string_opt2, "bar");
EXPECT_EQ(positionals.size(), 1u);
if (positionals.size() == 1u) {
EXPECT_EQ(positionals[0], "one");
}
// Bool options (given), string options (given) and one positional argument (given)
// one string and one bool option after positional
// Expected: all arguments fill as given
bool_opt1 = false;
bool_opt2 = false;
string_opt1 = "";
string_opt2 = "";
positionals = {};
parser_result = run_parser({ "app"sv, "-c"sv, "-e"sv, "bar"sv, "one"sv, "-d"sv, "foo"sv, "-b"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_option(string_opt1, "string_opt1", nullptr, 'd', "D");
parser.add_option(string_opt2, "string_opt2", nullptr, 'e', "E");
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(string_opt1, "foo");
EXPECT_EQ(string_opt2, "bar");
EXPECT_EQ(positionals.size(), 1u);
if (positionals.size() == 1u) {
EXPECT_EQ(positionals[0], "one");
}
// Bool options (given), string options (given) and two positional arguments (given)
// positional arguments are separated by options
// Expected: all arguments fill as given
bool_opt1 = false;
bool_opt2 = false;
string_opt1 = "";
string_opt2 = "";
positionals = {};
parser_result = run_parser({ "app"sv, "-b"sv, "-d"sv, "foo"sv, "one"sv, "-c"sv, "-e"sv, "bar"sv, "two"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_option(string_opt1, "string_opt1", nullptr, 'd', "D");
parser.add_option(string_opt2, "string_opt2", nullptr, 'e', "E");
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(string_opt1, "foo");
EXPECT_EQ(string_opt2, "bar");
EXPECT_EQ(positionals.size(), 2u);
if (positionals.size() == 2u) {
EXPECT_EQ(positionals[0], "one");
EXPECT_EQ(positionals[1], "two");
}
// Bool options (given), string options (given) and two positional arguments (given)
// positional arguments are separated and followed by options
// Expected: all arguments fill as given
bool_opt1 = false;
bool_opt2 = false;
string_opt1 = "";
string_opt2 = "";
positionals = {};
parser_result = run_parser({ "app"sv, "one"sv, "-b"sv, "-d"sv, "foo"sv, "two"sv, "-c"sv, "-e"sv, "bar"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_option(string_opt1, "string_opt1", nullptr, 'd', "D");
parser.add_option(string_opt2, "string_opt2", nullptr, 'e', "E");
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(string_opt1, "foo");
EXPECT_EQ(string_opt2, "bar");
EXPECT_EQ(positionals.size(), 2u);
if (positionals.size() == 2u) {
EXPECT_EQ(positionals[0], "one");
EXPECT_EQ(positionals[1], "two");
}
// Bool options (given), string options (given) and two positional arguments (given)
// positional arguments are separated and followed by options, variation on options order
// Expected: all arguments fill as given
bool_opt1 = false;
bool_opt2 = false;
string_opt1 = "";
string_opt2 = "";
positionals = {};
parser_result = run_parser({ "app"sv, "one"sv, "-d"sv, "foo"sv, "-b"sv, "two"sv, "-e"sv, "bar"sv, "-c"sv }, [&](auto& parser) {
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_option(string_opt1, "string_opt1", nullptr, 'd', "D");
parser.add_option(string_opt2, "string_opt2", nullptr, 'e', "E");
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::No);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(string_opt1, "foo");
EXPECT_EQ(string_opt2, "bar");
EXPECT_EQ(positionals.size(), 2u);
if (positionals.size() == 2u) {
EXPECT_EQ(positionals[0], "one");
EXPECT_EQ(positionals[1], "two");
}
}
TEST_CASE(stop_on_first_non_option)
{
// Do not stop on first non-option; arguments in correct order
// Expected: bool options are set and one positional argument is filled
bool bool_opt1 = false;
bool bool_opt2 = false;
Vector<StringView> positionals;
auto parser_result = run_parser({ "app"sv, "-b"sv, "-c"sv, "one"sv }, [&](auto& parser) {
parser.set_stop_on_first_non_option(false);
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(positionals.size(), 1u);
if (positionals.size() == 1u)
EXPECT_EQ(positionals[0], "one");
// Do not stop on first non-option; arguments in wrong order
// Expected: bool options are set and one positional argument is filled
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "-b"sv, "one"sv, "-c"sv }, [&](auto& parser) {
parser.set_stop_on_first_non_option(false);
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(positionals.size(), 1u);
if (positionals.size() == 1u)
EXPECT_EQ(positionals[0], "one");
// Stop on first non-option; arguments in correct order
// Expected: bool options are set and one positional argument is filled
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "-b"sv, "-c"sv, "one"sv }, [&](auto& parser) {
parser.set_stop_on_first_non_option(true);
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, true);
EXPECT_EQ(positionals.size(), 1u);
if (positionals.size() == 1u)
EXPECT_EQ(positionals[0], "one");
// Stop on first non-option; arguments in wrong order
// Expected: bool_opt1 is set, other arguments are filled as positional arguments
bool_opt1 = false;
bool_opt2 = false;
positionals = {};
parser_result = run_parser({ "app"sv, "-b"sv, "one"sv, "-c"sv }, [&](auto& parser) {
parser.set_stop_on_first_non_option(true);
parser.add_option(bool_opt1, "bool_opt1", nullptr, 'b');
parser.add_option(bool_opt2, "bool_opt2", nullptr, 'c');
parser.add_positional_argument(positionals, "pos", "pos", Core::ArgsParser::Required::Yes);
});
EXPECT_EQ(parser_result.result, true);
EXPECT_EQ(bool_opt1, true);
EXPECT_EQ(bool_opt2, false);
EXPECT_EQ(positionals.size(), 2u);
if (positionals.size() == 2u) {
EXPECT_EQ(positionals[0], "one");
EXPECT_EQ(positionals[1], "-c");
}
}
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