cpp-course/modules/12_cpp20/test/concepts_test.cpp

#include "concepts.hpp"
#include <gtest/gtest.h>

TEST(Concepts, DoubleValue) {
    EXPECT_EQ(cpp20::double_value(21), 42);
}

TEST(Concepts, Clamp01) {
    EXPECT_DOUBLE_EQ(cpp20::clamp01(1.5), 1.0);
    EXPECT_DOUBLE_EQ(cpp20::clamp01(-0.5), 0.0);
}

TEST(Concepts, UppercaseCopy) {
    EXPECT_EQ(cpp20::uppercase_copy(std::string{"hello"}), "HELLO");
}

TEST(Concepts, SumIntegral) {
    EXPECT_EQ(cpp20::sum_integral<int>({1, 2, 3}), 6);
}