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#include "catch.hpp"
#include <initializer_list>
#include "cxxopts.hpp"
class Argv {
public:
Argv(std::initializer_list<const char*> args)
: m_argv(new char*[args.size()])
, m_argc(static_cast<int>(args.size()))
{
int i = 0;
auto iter = args.begin();
while (iter != args.end()) {
auto len = strlen(*iter) + 1;
auto ptr = std::unique_ptr<char[]>(new char[len]);
strcpy(ptr.get(), *iter);
m_args.push_back(std::move(ptr));
m_argv.get()[i] = m_args.back().get();
++iter;
++i;
}
}
char** argv() const {
return m_argv.get();
}
int argc() const {
return m_argc;
}
private:
std::vector<std::unique_ptr<char[]>> m_args;
std::unique_ptr<char*[]> m_argv;
int m_argc;
};
TEST_CASE("Basic options", "[options]")
{
cxxopts::Options options("tester", " - test basic options");
options.add_options()
("long", "a long option")
("s,short", "a short option")
("value", "an option with a value", cxxopts::value<std::string>())
("a,av", "a short option with a value", cxxopts::value<std::string>())
("6,six", "a short number option")
("p, space", "an option with space between short and long")
("nothing", "won't exist", cxxopts::value<std::string>())
;
Argv argv({
"tester",
"--long",
"-s",
"--value",
"value",
"-a",
"b",
"-6",
"-p",
"--space",
});
char** actual_argv = argv.argv();
auto argc = argv.argc();
auto result = options.parse(argc, actual_argv);
CHECK(result.count("long") == 1);
CHECK(result.count("s") == 1);
CHECK(result.count("value") == 1);
CHECK(result.count("a") == 1);
CHECK(result["value"].as<std::string>() == "value");
CHECK(result["a"].as<std::string>() == "b");
CHECK(result.count("6") == 1);
CHECK(result.count("p") == 2);
CHECK(result.count("space") == 2);
auto& arguments = result.arguments();
REQUIRE(arguments.size() == 7);
CHECK(arguments[0].key() == "long");
CHECK(arguments[0].value() == "true");
CHECK(arguments[0].as<bool>() == true);
CHECK(arguments[1].key() == "short");
CHECK(arguments[2].key() == "value");
CHECK(arguments[3].key() == "av");
CHECK_THROWS_AS(result["nothing"].as<std::string>(), cxxopts::option_has_no_value_exception&);
}
TEST_CASE("Short options", "[options]")
{
cxxopts::Options options("test_short", " - test short options");
options.add_options()
("a", "a short option", cxxopts::value<std::string>());
Argv argv({"test_short", "-a", "value"});
auto actual_argv = argv.argv();
auto argc = argv.argc();
auto result = options.parse(argc, actual_argv);
CHECK(result.count("a") == 1);
CHECK(result["a"].as<std::string>() == "value");
REQUIRE_THROWS_AS(options.add_options()("", "nothing option"),
cxxopts::invalid_option_format_error&);
}
TEST_CASE("No positional", "[positional]")
{
cxxopts::Options options("test_no_positional",
" - test no positional options");
Argv av({"tester", "a", "b", "def"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
REQUIRE(argc == 4);
CHECK(strcmp(argv[1], "a") == 0);
}
TEST_CASE("All positional", "[positional]")
{
std::vector<std::string> positional;
cxxopts::Options options("test_all_positional", " - test all positional");
options.add_options()
("positional", "Positional parameters",
cxxopts::value<std::vector<std::string>>(positional))
;
Argv av({"tester", "a", "b", "c"});
auto argc = av.argc();
auto argv = av.argv();
std::vector<std::string> pos_names = {"positional"};
options.parse_positional(pos_names.begin(), pos_names.end());
auto result = options.parse(argc, argv);
REQUIRE(argc == 1);
REQUIRE(positional.size() == 3);
CHECK(positional[0] == "a");
CHECK(positional[1] == "b");
CHECK(positional[2] == "c");
}
TEST_CASE("Some positional explicit", "[positional]")
{
cxxopts::Options options("positional_explicit", " - test positional");
options.add_options()
("input", "Input file", cxxopts::value<std::string>())
("output", "Output file", cxxopts::value<std::string>())
("positional", "Positional parameters",
cxxopts::value<std::vector<std::string>>())
;
options.parse_positional({"input", "output", "positional"});
Argv av({"tester", "--output", "a", "b", "c", "d"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(argc == 1);
CHECK(result.count("output"));
CHECK(result["input"].as<std::string>() == "b");
CHECK(result["output"].as<std::string>() == "a");
auto& positional = result["positional"].as<std::vector<std::string>>();
REQUIRE(positional.size() == 2);
CHECK(positional[0] == "c");
CHECK(positional[1] == "d");
}
TEST_CASE("No positional with extras", "[positional]")
{
cxxopts::Options options("posargmaster", "shows incorrect handling");
options.add_options()
("dummy", "oh no", cxxopts::value<std::string>())
;
Argv av({"extras", "--", "a", "b", "c", "d"});
char** argv = av.argv();
auto argc = av.argc();
auto old_argv = argv;
auto old_argc = argc;
options.parse(argc, argv);
REQUIRE(argc == old_argc - 1);
CHECK(argv[0] == std::string("extras"));
CHECK(argv[1] == std::string("a"));
}
TEST_CASE("Positional not valid", "[positional]") {
cxxopts::Options options("positional_invalid", "invalid positional argument");
options.add_options()
("long", "a long option", cxxopts::value<std::string>())
;
options.parse_positional("something");
Argv av({"foobar", "bar", "baz"});
char** argv = av.argv();
auto argc = av.argc();
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::option_not_exists_exception&);
}
TEST_CASE("Empty with implicit value", "[implicit]")
{
cxxopts::Options options("empty_implicit", "doesn't handle empty");
options.add_options()
("implicit", "Has implicit", cxxopts::value<std::string>()
->implicit_value("foo"));
Argv av({"implicit", "--implicit="});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
REQUIRE(result.count("implicit") == 1);
REQUIRE(result["implicit"].as<std::string>() == "");
}
TEST_CASE("Boolean without implicit value", "[implicit]")
{
cxxopts::Options options("no_implicit", "bool without an implicit value");
options.add_options()
("bool", "Boolean without implicit", cxxopts::value<bool>()
->no_implicit_value());
SECTION("When no value provided") {
Argv av({"no_implicit", "--bool"});
char** argv = av.argv();
auto argc = av.argc();
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::missing_argument_exception&);
}
SECTION("With equal-separated true") {
Argv av({"no_implicit", "--bool=true"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == true);
}
SECTION("With equal-separated false") {
Argv av({"no_implicit", "--bool=false"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == false);
}
SECTION("With space-separated true") {
Argv av({"no_implicit", "--bool", "true"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == true);
}
SECTION("With space-separated false") {
Argv av({"no_implicit", "--bool", "false"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("bool") == 1);
CHECK(result["bool"].as<bool>() == false);
}
}
TEST_CASE("Default values", "[default]")
{
cxxopts::Options options("defaults", "has defaults");
options.add_options()
("default", "Has implicit", cxxopts::value<int>()->default_value("42"))
("v,vector", "Default vector", cxxopts::value<std::vector<int>>()
->default_value("1,4"))
;
SECTION("Sets defaults") {
Argv av({"implicit"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("default") == 0);
CHECK(result["default"].as<int>() == 42);
auto& v = result["vector"].as<std::vector<int>>();
REQUIRE(v.size() == 2);
CHECK(v[0] == 1);
CHECK(v[1] == 4);
}
SECTION("When values provided") {
Argv av({"implicit", "--default", "5"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("default") == 1);
CHECK(result["default"].as<int>() == 5);
}
}
TEST_CASE("Parse into a reference", "[reference]")
{
int value = 0;
cxxopts::Options options("into_reference", "parses into a reference");
options.add_options()
("ref", "A reference", cxxopts::value(value));
Argv av({"into_reference", "--ref", "42"});
auto argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
CHECK(result.count("ref") == 1);
CHECK(value == 42);
}
TEST_CASE("Integers", "[options]")
{
cxxopts::Options options("parses_integers", "parses integers correctly");
options.add_options()
("positional", "Integers", cxxopts::value<std::vector<int>>());
Argv av({"ints", "--", "5", "6", "-6", "0", "0xab", "0xAf", "0x0"});
char** argv = av.argv();
auto argc = av.argc();
options.parse_positional("positional");
auto result = options.parse(argc, argv);
REQUIRE(result.count("positional") == 7);
auto& positional = result["positional"].as<std::vector<int>>();
REQUIRE(positional.size() == 7);
CHECK(positional[0] == 5);
CHECK(positional[1] == 6);
CHECK(positional[2] == -6);
CHECK(positional[3] == 0);
CHECK(positional[4] == 0xab);
CHECK(positional[5] == 0xaf);
CHECK(positional[6] == 0x0);
}
TEST_CASE("Leading zero integers", "[options]")
{
cxxopts::Options options("parses_integers", "parses integers correctly");
options.add_options()
("positional", "Integers", cxxopts::value<std::vector<int>>());
Argv av({"ints", "--", "05", "06", "0x0ab", "0x0001"});
char** argv = av.argv();
auto argc = av.argc();
options.parse_positional("positional");
auto result = options.parse(argc, argv);
REQUIRE(result.count("positional") == 4);
auto& positional = result["positional"].as<std::vector<int>>();
REQUIRE(positional.size() == 4);
CHECK(positional[0] == 5);
CHECK(positional[1] == 6);
CHECK(positional[2] == 0xab);
CHECK(positional[3] == 0x1);
}
TEST_CASE("Unsigned integers", "[options]")
{
cxxopts::Options options("parses_unsigned", "detects unsigned errors");
options.add_options()
("positional", "Integers", cxxopts::value<std::vector<unsigned int>>());
Argv av({"ints", "--", "-2"});
char** argv = av.argv();
auto argc = av.argc();
options.parse_positional("positional");
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::argument_incorrect_type&);
}
TEST_CASE("Integer bounds", "[integer]")
{
cxxopts::Options options("integer_boundaries", "check min/max integer");
options.add_options()
("positional", "Integers", cxxopts::value<std::vector<int8_t>>());
SECTION("No overflow")
{
Argv av({"ints", "--", "127", "-128", "0x7f", "-0x80", "0x7e"});
auto argv = av.argv();
auto argc = av.argc();
options.parse_positional("positional");
auto result = options.parse(argc, argv);
REQUIRE(result.count("positional") == 5);
auto& positional = result["positional"].as<std::vector<int8_t>>();
CHECK(positional[0] == 127);
CHECK(positional[1] == -128);
CHECK(positional[2] == 0x7f);
CHECK(positional[3] == -0x80);
CHECK(positional[4] == 0x7e);
}
}
TEST_CASE("Overflow on boundary", "[integer]")
{
using namespace cxxopts::values;
int8_t si;
uint8_t ui;
CHECK_THROWS_AS((integer_parser("128", si)), cxxopts::argument_incorrect_type&);
CHECK_THROWS_AS((integer_parser("-129", si)), cxxopts::argument_incorrect_type&);
CHECK_THROWS_AS((integer_parser("256", ui)), cxxopts::argument_incorrect_type&);
CHECK_THROWS_AS((integer_parser("-0x81", si)), cxxopts::argument_incorrect_type&);
CHECK_THROWS_AS((integer_parser("0x80", si)), cxxopts::argument_incorrect_type&);
CHECK_THROWS_AS((integer_parser("0x100", ui)), cxxopts::argument_incorrect_type&);
}
TEST_CASE("Integer overflow", "[options]")
{
using namespace cxxopts::values;
cxxopts::Options options("reject_overflow", "rejects overflowing integers");
options.add_options()
("positional", "Integers", cxxopts::value<std::vector<int8_t>>());
Argv av({"ints", "--", "128"});
auto argv = av.argv();
auto argc = av.argc();
options.parse_positional("positional");
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::argument_incorrect_type&);
int integer = 0;
CHECK_THROWS_AS((integer_parser("23423423423", integer)), cxxopts::argument_incorrect_type&);
CHECK_THROWS_AS((integer_parser("234234234234", integer)), cxxopts::argument_incorrect_type&);
}
TEST_CASE("Floats", "[options]")
{
cxxopts::Options options("parses_floats", "parses floats correctly");
options.add_options()
("double", "Double precision", cxxopts::value<double>())
("positional", "Floats", cxxopts::value<std::vector<float>>());
Argv av({"floats", "--double", "0.5", "--", "4", "-4", "1.5e6", "-1.5e6"});
char** argv = av.argv();
auto argc = av.argc();
options.parse_positional("positional");
auto result = options.parse(argc, argv);
REQUIRE(result.count("double") == 1);
REQUIRE(result.count("positional") == 4);
CHECK(result["double"].as<double>() == 0.5);
auto& positional = result["positional"].as<std::vector<float>>();
CHECK(positional[0] == 4);
CHECK(positional[1] == -4);
CHECK(positional[2] == 1.5e6);
CHECK(positional[3] == -1.5e6);
}
TEST_CASE("Invalid integers", "[integer]") {
cxxopts::Options options("invalid_integers", "rejects invalid integers");
options.add_options()
("positional", "Integers", cxxopts::value<std::vector<int>>());
Argv av({"ints", "--", "Ae"});
char **argv = av.argv();
auto argc = av.argc();
options.parse_positional("positional");
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::argument_incorrect_type&);
}
TEST_CASE("Booleans", "[boolean]") {
cxxopts::Options options("parses_floats", "parses floats correctly");
options.add_options()
("bool", "A Boolean", cxxopts::value<bool>())
("debug", "Debugging", cxxopts::value<bool>())
("timing", "Timing", cxxopts::value<bool>())
("verbose", "Verbose", cxxopts::value<bool>())
("dry-run", "Dry Run", cxxopts::value<bool>())
("noExplicitDefault", "No Explicit Default", cxxopts::value<bool>())
("defaultTrue", "Timing", cxxopts::value<bool>()->default_value("true"))
("defaultFalse", "Timing", cxxopts::value<bool>()->default_value("false"))
("others", "Other arguments", cxxopts::value<std::vector<std::string>>())
;
options.parse_positional("others");
Argv av({"booleans", "--bool=false", "--debug=true", "--timing", "--verbose=1", "--dry-run=0", "extra"});
char** argv = av.argv();
auto argc = av.argc();
auto result = options.parse(argc, argv);
REQUIRE(result.count("bool") == 1);
REQUIRE(result.count("debug") == 1);
REQUIRE(result.count("timing") == 1);
REQUIRE(result.count("verbose") == 1);
REQUIRE(result.count("dry-run") == 1);
REQUIRE(result.count("noExplicitDefault") == 0);
REQUIRE(result.count("defaultTrue") == 0);
REQUIRE(result.count("defaultFalse") == 0);
CHECK(result["bool"].as<bool>() == false);
CHECK(result["debug"].as<bool>() == true);
CHECK(result["timing"].as<bool>() == true);
CHECK(result["verbose"].as<bool>() == true);
CHECK(result["dry-run"].as<bool>() == false);
CHECK(result["noExplicitDefault"].as<bool>() == false);
CHECK(result["defaultTrue"].as<bool>() == true);
CHECK(result["defaultFalse"].as<bool>() == false);
REQUIRE(result.count("others") == 1);
}
TEST_CASE("std::vector", "[vector]") {
std::vector<double> vector;
cxxopts::Options options("vector", " - tests vector");
options.add_options()
("vector", "an vector option", cxxopts::value<std::vector<double>>(vector));
Argv av({"vector", "--vector", "1,-2.1,3,4.5"});
char** argv = av.argv();
auto argc = av.argc();
options.parse(argc, argv);
REQUIRE(vector.size() == 4);
CHECK(vector[0] == 1);
CHECK(vector[1] == -2.1);
CHECK(vector[2] == 3);
CHECK(vector[3] == 4.5);
}
#ifdef CXXOPTS_HAS_OPTIONAL
TEST_CASE("std::optional", "[optional]") {
std::optional<std::string> optional;
cxxopts::Options options("optional", " - tests optional");
options.add_options()
("optional", "an optional option", cxxopts::value<std::optional<std::string>>(optional));
Argv av({"optional", "--optional", "foo"});
char** argv = av.argv();
auto argc = av.argc();
options.parse(argc, argv);
REQUIRE(optional.has_value());
CHECK(*optional == "foo");
}
#endif
TEST_CASE("Unrecognised options", "[options]") {
cxxopts::Options options("unknown_options", " - test unknown options");
options.add_options()
("long", "a long option")
("s,short", "a short option");
Argv av({
"unknown_options",
"--unknown",
"--long",
"-su",
"--another_unknown",
});
char** argv = av.argv();
auto argc = av.argc();
SECTION("Default behaviour") {
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::option_not_exists_exception&);
}
SECTION("After allowing unrecognised options") {
options.allow_unrecognised_options();
CHECK_NOTHROW(options.parse(argc, argv));
REQUIRE(argc == 3);
CHECK_THAT(argv[1], Catch::Equals("--unknown"));
}
}
TEST_CASE("Allow bad short syntax", "[options]") {
cxxopts::Options options("unknown_options", " - test unknown options");
options.add_options()
("long", "a long option")
("s,short", "a short option");
Argv av({
"unknown_options",
"-some_bad_short",
});
char** argv = av.argv();
auto argc = av.argc();
SECTION("Default behaviour") {
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::option_syntax_exception&);
}
SECTION("After allowing unrecognised options") {
options.allow_unrecognised_options();
CHECK_NOTHROW(options.parse(argc, argv));
REQUIRE(argc == 2);
CHECK_THAT(argv[1], Catch::Equals("-some_bad_short"));
}
}
TEST_CASE("Invalid option syntax", "[options]") {
cxxopts::Options options("invalid_syntax", " - test invalid syntax");
Argv av({
"invalid_syntax",
"--a",
});
char** argv = av.argv();
auto argc = av.argc();
SECTION("Default behaviour") {
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::option_syntax_exception&);
}
}
TEST_CASE("Options empty", "[options]") {
cxxopts::Options options("Options list empty", " - test empty option list");
options.add_options();
options.add_options("");
options.add_options("", {});
options.add_options("test");
Argv argv_({
"test",
"--unknown"
});
auto argc = argv_.argc();
char** argv = argv_.argv();
CHECK(options.groups().empty());
CHECK_THROWS_AS(options.parse(argc, argv), cxxopts::option_not_exists_exception&);
}
TEST_CASE("Initializer list with group", "[options]") {
cxxopts::Options options("Initializer list group", " - test initializer list with group");
options.add_options("", {
{"a, address", "server address", cxxopts::value<std::string>()->default_value("127.0.0.1")},
{"p, port", "server port", cxxopts::value<std::string>()->default_value("7110"), "PORT"},
});
cxxopts::Option help{"h,help", "Help"};
options.add_options("TEST_GROUP", {
{"t, test", "test option"},
help
});
Argv argv({
"test",
"--address",
"10.0.0.1",
"-p",
"8000",
"-t",
});
char** actual_argv = argv.argv();
auto argc = argv.argc();
auto result = options.parse(argc, actual_argv);
CHECK(options.groups().size() == 2);
CHECK(result.count("address") == 1);
CHECK(result.count("port") == 1);
CHECK(result.count("test") == 1);
CHECK(result.count("help") == 0);
CHECK(result["address"].as<std::string>() == "10.0.0.1");
CHECK(result["port"].as<std::string>() == "8000");
CHECK(result["test"].as<bool>() == true);
}
TEST_CASE("Option add with add_option(string, Option)", "[options]") {
cxxopts::Options options("Option add with add_option", " - test Option add with add_option(string, Option)");
cxxopts::Option option_1("t,test", "test option", cxxopts::value<int>()->default_value("7"), "TEST");
options.add_option("", option_1);
options.add_option("TEST", {"a,aggregate", "test option 2", cxxopts::value<int>(), "AGGREGATE"});
Argv argv_({
"test",
"--test",
"5",
"-a",
"4"
});
auto argc = argv_.argc();
char** argv = argv_.argv();
auto result = options.parse(argc, argv);
CHECK(result.arguments().size()==2);
CHECK(options.groups().size() == 2);
CHECK(result.count("address") == 0);
CHECK(result.count("aggregate") == 1);
CHECK(result.count("test") == 1);
CHECK(result["aggregate"].as<int>() == 4);
CHECK(result["test"].as<int>() == 5);
}