mirror of
https://github.com/KeqingMoe/argparse.git
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6344b5dcc7
Here, the user gave an argument name but failed to provide the required
parameters to the argument. Tell the user which argument wants more.
This is an API change that may affect programs trying to match the
specific "Too few arguments" message. The new error message appends the
user-supplied argument that caused the error.
A solution which works with both versions is to look for "Too few
arguments" at the beginning of the error message.
- if (err.what() == "Too few arguments")
+ if (std:string(err.what()).rfind("Too few arguments", 0) == 0)
Signed-off-by: Sean Robinson <sean.robinson@scottsdalecc.edu>
237 lines
7.5 KiB
C++
237 lines
7.5 KiB
C++
#include <doctest.hpp>
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#include <argparse/argparse.hpp>
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using doctest::test_suite;
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TEST_CASE("Missing argument" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--config").nargs(1);
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REQUIRE_THROWS_WITH_AS(program.parse_args({ "test", "--config" }),
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"Too few arguments for '--config'.",
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std::runtime_error);
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}
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TEST_CASE("Parse a string argument with value" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--config");
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program.parse_args({ "test", "--config", "config.yml"});
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REQUIRE(program.get("--config") == "config.yml");
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}
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TEST_CASE("Parse a string argument with default value" *
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test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--config")
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.default_value(std::string("foo.yml"));
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program.parse_args({ "test", "--config" });
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REQUIRE(program.get("--config") == "foo.yml");
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}
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TEST_CASE("Parse a string argument without default value" *
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test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--config");
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WHEN("no value provided") {
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program.parse_args({"test"});
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THEN("the option is nullopt") {
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auto opt = program.present("--config");
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REQUIRE_FALSE(opt);
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REQUIRE(opt == std::nullopt);
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}
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}
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WHEN("a value is provided") {
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program.parse_args({"test", "--config", ""});
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THEN("the option has a value") {
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auto opt = program.present("--config");
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REQUIRE(opt);
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REQUIRE(opt->empty());
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}
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}
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}
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TEST_CASE("Parse an int argument with value" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--count")
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.scan<'i', int>();
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program.parse_args({ "test", "--count", "5" });
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REQUIRE(program.get<int>("--count") == 5);
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}
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TEST_CASE("Parse an int argument with default value" *
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test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--count")
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.default_value(2)
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.scan<'i', int>();
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program.parse_args({ "test", "--count" });
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REQUIRE(program.get<int>("--count") == 2);
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}
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TEST_CASE("Parse a float argument with value" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--ratio")
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.scan<'g', float>();
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program.parse_args({ "test", "--ratio", "5.6645" });
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REQUIRE(program.get<float>("--ratio") == 5.6645f);
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}
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TEST_CASE("Parse a float argument with default value" *
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test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--ratio")
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.default_value(3.14f)
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.scan<'g', float>();
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program.parse_args({ "test", "--ratio" });
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REQUIRE(program.get<float>("--ratio") == 3.14f);
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}
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TEST_CASE("Parse a double argument with value" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--ratio")
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.scan<'g', double>();
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program.parse_args({ "test", "--ratio", "5.6645" });
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REQUIRE(program.get<double>("--ratio") == 5.6645);
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}
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TEST_CASE("Parse a double argument with default value" *
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test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--ratio")
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.default_value(3.14)
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.scan<'g', double>();
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program.parse_args({ "test", "--ratio" });
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REQUIRE(program.get<double>("--ratio") == 3.14);
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}
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TEST_CASE("Parse a vector of integer arguments" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--vector")
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.nargs(5)
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.scan<'i', int>();
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program.parse_args({ "test", "--vector", "1", "2", "3", "4", "5" });
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auto vector = program.get<std::vector<int>>("--vector");
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REQUIRE(vector.size() == 5);
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REQUIRE(vector[0] == 1);
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REQUIRE(vector[1] == 2);
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REQUIRE(vector[2] == 3);
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REQUIRE(vector[3] == 4);
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REQUIRE(vector[4] == 5);
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}
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TEST_CASE("Parse a vector of float arguments" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--vector")
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.nargs(5)
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.scan<'g', float>();
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program.parse_args({ "test", "--vector", "1.1", "2.2", "3.3", "4.4", "5.5" });
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auto vector = program.get<std::vector<float>>("--vector");
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REQUIRE(vector.size() == 5);
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REQUIRE(vector[0] == 1.1f);
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REQUIRE(vector[1] == 2.2f);
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REQUIRE(vector[2] == 3.3f);
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REQUIRE(vector[3] == 4.4f);
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REQUIRE(vector[4] == 5.5f);
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}
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TEST_CASE("Parse a vector of float without default value" *
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test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--vector").scan<'g', float>().nargs(3);
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WHEN("no value is provided") {
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program.parse_args({"test"});
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THEN("the option is nullopt") {
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auto opt = program.present<std::vector<float>>("--vector");
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REQUIRE_FALSE(opt.has_value());
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REQUIRE(opt == std::nullopt);
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}
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}
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WHEN("a value is provided") {
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program.parse_args({"test", "--vector", ".3", "1.3", "6"});
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THEN("the option has a value") {
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auto opt = program.present<std::vector<float>>("--vector");
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REQUIRE(opt.has_value());
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auto &&vec = opt.value();
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REQUIRE(vec.size() == 3);
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REQUIRE(vec[0] == .3f);
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REQUIRE(vec[1] == 1.3f);
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REQUIRE(vec[2] == 6.f);
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}
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}
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}
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TEST_CASE("Parse a vector of double arguments" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--vector")
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.nargs(5)
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.scan<'g', double>();
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program.parse_args({ "test", "--vector", "1.1", "2.2", "3.3", "4.4", "5.5" });
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auto vector = program.get<std::vector<double>>("--vector");
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REQUIRE(vector.size() == 5);
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REQUIRE(vector[0] == 1.1);
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REQUIRE(vector[1] == 2.2);
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REQUIRE(vector[2] == 3.3);
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REQUIRE(vector[3] == 4.4);
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REQUIRE(vector[4] == 5.5);
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}
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TEST_CASE("Parse a vector of string arguments" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--vector")
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.nargs(5);
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program.parse_args({ "test", "--vector", "abc", "def", "ghi", "jkl", "mno" });
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auto vector = program.get<std::vector<std::string>>("--vector");
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REQUIRE(vector.size() == 5);
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REQUIRE(vector[0] == "abc");
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REQUIRE(vector[1] == "def");
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REQUIRE(vector[2] == "ghi");
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REQUIRE(vector[3] == "jkl");
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REQUIRE(vector[4] == "mno");
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}
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TEST_CASE("Parse a vector of character arguments" * test_suite("parse_args")) {
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argparse::ArgumentParser program("test");
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program.add_argument("--vector")
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.nargs(5)
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.action([](const std::string& value) { return value[0]; });
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program.parse_args({ "test", "--vector", "a", "b", "c", "d", "e" });
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auto vector = program.get<std::vector<char>>("--vector");
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REQUIRE(vector.size() == 5);
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REQUIRE(vector[0] == 'a');
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REQUIRE(vector[1] == 'b');
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REQUIRE(vector[2] == 'c');
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REQUIRE(vector[3] == 'd');
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REQUIRE(vector[4] == 'e');
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}
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TEST_CASE("Parse a vector of string arguments and construct objects" *
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test_suite("parse_args")) {
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class Foo {
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public:
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Foo(const std::string& value) : value(value) {}
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std::string value;
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};
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argparse::ArgumentParser program("test");
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program.add_argument("--vector")
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.nargs(5)
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.action([](const std::string& value) { return Foo(value); });
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program.parse_args({ "test", "--vector", "abc", "def", "ghi", "jkl", "mno" });
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auto vector = program.get<std::vector<Foo>>("--vector");
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REQUIRE(vector.size() == 5);
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REQUIRE(vector[0].value == Foo("abc").value);
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REQUIRE(vector[1].value == Foo("def").value);
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REQUIRE(vector[2].value == Foo("ghi").value);
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REQUIRE(vector[3].value == Foo("jkl").value);
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REQUIRE(vector[4].value == Foo("mno").value);
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}
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