core/tests/error.cpp

0001 // SPDX-License-Identifier: LGPL-3.0-or-later
0002 // Copyright (C) 2026 Wouter Deconinck
0003 //
0004 // Tests for the Error exception base class
0005 //
0006 #include <algorithms/error.h>
0007
0008 #include <catch2/catch_test_macros.hpp>
0009
0010 #include <exception>
0011 #include <string>
0012 #include <type_traits>
0013
0014 using namespace algorithms;
0015
0016 TEST_CASE("Error carries a message and a default type", "[error]") {
0017   const Error e{"something went wrong"};
0018   CHECK(std::string{e.what()} == "something went wrong");
0019   CHECK(std::string{e.type()} == "algorithms::Error");
0020 }
0021
0022 TEST_CASE("Error carries a custom type", "[error]") {
0023   const Error e{"bad value", "my::CustomError"};
0024   CHECK(std::string{e.what()} == "bad value");
0025   CHECK(std::string{e.type()} == "my::CustomError");
0026 }
0027
0028 TEST_CASE("Error can be caught as std::exception", "[error]") {
0029   STATIC_REQUIRE(std::is_base_of_v<std::exception, Error>);
0030   try {
0031     throw Error{"thrown"};
0032   } catch (const std::exception& e) {
0033     CHECK(std::string{e.what()} == "thrown");
0034   }
0035 }