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75 lines
2.9 KiB
C++
75 lines
2.9 KiB
C++
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// Copyright Catch2 Authors
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// https://www.boost.org/LICENSE_1_0.txt)
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// SPDX-License-Identifier: BSL-1.0
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#include <catch2/catch_test_macros.hpp>
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#include <catch2/internal/catch_clara.hpp>
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#include <string>
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TEST_CASE("is_unary_function", "[clara][compilation]") {
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auto unary1 = [](int) {};
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auto unary2 = [](std::string const&) {};
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auto const unary3 = [](std::string const&) {};
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auto unary4 = [](int) { return 42; };
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void unary5(char);
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double unary6(long);
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double binary1(long, int);
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auto binary2 = [](int, char) {};
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auto nullary1 = []() {};
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auto nullary2 = []() {return 42;};
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STATIC_REQUIRE(Catch::Clara::Detail::is_unary_function<decltype(unary1)>::value);
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STATIC_REQUIRE(Catch::Clara::Detail::is_unary_function<decltype(unary2)>::value);
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STATIC_REQUIRE(Catch::Clara::Detail::is_unary_function<decltype(unary3)>::value);
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STATIC_REQUIRE(Catch::Clara::Detail::is_unary_function<decltype(unary4)>::value);
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STATIC_REQUIRE(Catch::Clara::Detail::is_unary_function<decltype(unary5)>::value);
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STATIC_REQUIRE(Catch::Clara::Detail::is_unary_function<decltype(unary6)>::value);
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STATIC_REQUIRE_FALSE(Catch::Clara::Detail::is_unary_function<decltype(binary1)>::value);
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STATIC_REQUIRE_FALSE(Catch::Clara::Detail::is_unary_function<decltype(binary2)>::value);
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STATIC_REQUIRE_FALSE(Catch::Clara::Detail::is_unary_function<decltype(nullary1)>::value);
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STATIC_REQUIRE_FALSE(Catch::Clara::Detail::is_unary_function<decltype(nullary2)>::value);
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STATIC_REQUIRE_FALSE(Catch::Clara::Detail::is_unary_function<int>::value);
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STATIC_REQUIRE_FALSE(Catch::Clara::Detail::is_unary_function<std::string const&>::value);
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}
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TEST_CASE("Clara::Arg supports single-arg parse the way Opt does", "[clara][arg][compilation]") {
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std::string name;
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auto p = Catch::Clara::Arg(name, "just one arg");
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CHECK(name.empty());
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p.parse( Catch::Clara::Args{ "UnitTest", "foo" } );
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REQUIRE(name == "foo");
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}
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TEST_CASE("Clara::Opt supports accept-many lambdas", "[clara][opt]") {
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std::string name;
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using namespace Catch::Clara;
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std::vector<std::string> res;
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const auto push_to_res = [&](std::string const& s) {
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res.push_back(s);
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return ParserResult::ok();
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};
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SECTION("Parsing fails on multiple options without accept_many") {
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auto p = Parser() | Opt(push_to_res, "value")["-o"];
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auto parse_result = p.parse( Args{ "UnitTest", "-o", "aaa", "-o", "bbb" } );
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CHECK_FALSE(parse_result);
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}
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SECTION("Parsing succeeds on multiple options with accept_many") {
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auto p = Parser() | Opt(accept_many, push_to_res, "value")["-o"];
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auto parse_result = p.parse( Args{ "UnitTest", "-o", "aaa", "-o", "bbb" } );
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CHECK(parse_result);
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CHECK(res == std::vector<std::string>{ "aaa", "bbb" });
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}
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}
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