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

TEST(FunctionBasics, Square) { EXPECT_EQ(functions::square(7), 49); }

TEST(FunctionBasics, SwapIntegers) {
    int a = 1, b = 2;
    functions::swap_integers(a, b);
    EXPECT_EQ(a, 2);
    EXPECT_EQ(b, 1);
}

TEST(FunctionBasics, Concatenate) {
    EXPECT_EQ(functions::concatenate({"C", "++"}), "C++");
}

TEST(FunctionBasics, AppendSuffix) {
    std::string text = "modern";
    functions::append_suffix(text, "_cpp");
    EXPECT_EQ(text, "modern_cpp");
}