Test.h

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#pragma once
 
#ifdef FUNCDOODLE_BUILD_IMTESTS
#include "imgui_te_engine.h"
#include "imgui_te_ui.h"
#endif
 
#include <atomic>
#include <cstring>
#include <iostream>
#include <string>
#include <vector>
 
#ifdef FUNCDOODLE_BUILD_TESTS
int FuncDoodle_RunTests();
#endif
 
#ifdef _MSC_VER
#define CURRENT_FUNC __FUNCTION__
#else
#define CURRENT_FUNC __func__
#endif
 
#ifdef FUNCDOODLE_BUILD_IMTESTS
int FuncDoodle_RegisterImTests();
extern ImGuiTestEngine* s_TestEngine;
#endif
 
namespace FuncDoodle {

    inline std::string Repeat(std::string_view s, size_t n) {
        std::string out;
        out.reserve(s.size() * n);
        while (n--)
            out += s;
        return out;
    }

    struct TestResult {
        std::string condition;  
        std::string message;    
        bool passed;            
    };

    class TestRegistry {
        public:
        static TestRegistry& Instance() {
            static TestRegistry instance;
            return instance;
        }

        void RegisterScope(
            const char* name, int passed, int total, int failed) {
            m_Results.push_back({name, passed, total, failed});
        }

        void PrintSummary() {
            int total_tests = 0;
            int total_passed = 0;
            int total_failed = 0;
 
            for (const auto& r : m_Results) {
                total_tests += r.total;
                total_passed += r.passed;
                total_failed += r.failed;
            }
 
            double percentage = total_tests > 0
                                    ? (double)total_passed / total_tests * 100.0
                                    : 0.0;
 
            std::string percent_str = std::to_string(percentage);
            percent_str = percent_str.substr(0, percent_str.find('.') + 2);
 
            std::cout << "\n";
            std::cout << "╔" << Repeat("═", 62) << "╗\n";
            std::cout << "║                      TEST SUMMARY                  "
                         "          ║\n";
            std::cout << "╠" << Repeat("═", 62) << "╣\n";
 
            std::cout << "║  Total:  " << total_tests
                      << std::string(
                             48 - std::to_string(total_tests).length(), ' ')
                      << "    ║\n";
 
            std::cout << "║  \033[32mPassed:  " << total_passed << "\033[0m"
                      << std::string(
                             47 - std::to_string(total_passed).length(), ' ')
                      << "    ║\n";
 
            std::cout << "║  \033[31mFailed:  " << total_failed << "\033[0m"
                      << std::string(
                             47 - std::to_string(total_failed).length(), ' ')
                      << "    ║\n";
 
            std::string color =
                (percentage == 100.0)
                    ? "\033[32m"
                    : (percentage >= 80.0 ? "\033[33m" : "\033[31m");
 
            std::cout << "║  " << color << "Success: " << percent_str
                      << "%\033[0m"
                      << std::string(46 - percent_str.length(), ' ')
                      << "    ║\n";
 
            std::cout << "╚" << Repeat("═", 62) << "╝\n";
        }
 
        private:
        struct ScopeResult {
            const char* name;
            int passed, total, failed;
        };
 
        std::vector<ScopeResult> m_Results;
    };

    class TestScope {
        public:
        explicit TestScope(const char* name) : m_Name(name) {}

        ~TestScope() {
            TestRegistry::Instance().RegisterScope(
                m_Name.c_str(), m_Passed, m_Total, m_Failed);
 
            std::cout << "\n";
            std::cout << "╔" << Repeat("═", 62) << "╗\n";
            std::cout << "║  \033[1m" << m_Name << "\033[0m"
                      << std::string(60 - m_Name.length(), ' ') << "║\n";
            std::cout << "╠" << Repeat("═", 62) << "╣\n";
 
            if (m_Failed == 0) {
                std::cout << "║  \033[32m[PASS]\033[0m " << m_Passed << "/"
                          << m_Total << " passed"
                          << std::string(45 -
                                             std::to_string(m_Passed).length() -
                                             std::to_string(m_Total).length(),
                                 ' ')
                          << "║\n";
            } else {
                std::cout << "║  \033[32m[PASS]\033[0m " << m_Passed << "/"
                          << m_Total << " passed"
                          << std::string(44 -
                                             std::to_string(m_Passed).length() -
                                             std::to_string(m_Total).length(),
                                 ' ')
                          << "║\n";
 
                std::cout << "║  \033[31m[FAIL]\033[0m " << m_Failed
                          << " failed"
                          << std::string(
                                 47 - std::to_string(m_Failed).length(), ' ')
                          << "║\n";
            }
 
            std::cout << "╚" << Repeat("═", 62) << "╝\n";
        }

        void Check(bool cond, const char* condStr, const char* msg = "") {
            m_Total++;
            if (cond)
                m_Passed++;
            else {
                m_Failed++;
                m_Results.push_back({condStr, msg ? msg : "", false});
            }
        }
 
        private:
        std::string m_Name;
        int m_Total = 0, m_Passed = 0, m_Failed = 0;
        std::vector<TestResult> m_Results;
    };
 
}  // namespace FuncDoodle
 
// ================= MACROS =================

#define TEST_SCOPE(name) FuncDoodle::TestScope _test_scope(name)

#define CHECK(cond, msg) _test_scope.Check(cond, #cond, msg)
#define CHECK_EQ(a, b, msg) _test_scope.Check((a) == (b), #a " == " #b, msg)
#define CHECK_NE(a, b, msg) _test_scope.Check((a) != (b), #a " != " #b, msg)
#define CHECK_LT(a, b, msg) _test_scope.Check((a) < (b), #a " < " #b, msg)
#define CHECK_LE(a, b, msg) _test_scope.Check((a) <= (b), #a " <= " #b, msg)
#define CHECK_GT(a, b, msg) _test_scope.Check((a) > (b), #a " > " #b, msg)
#define CHECK_GE(a, b, msg) _test_scope.Check((a) >= (b), #a " >= " #b, msg)
#define CHECK_NULL(ptr, msg) \
    _test_scope.Check((ptr) == nullptr, #ptr " == nullptr", msg)

#define CHECK_NOT_NULL(ptr, msg) \
    _test_scope.Check((ptr) != nullptr, #ptr " != nullptr", msg)