#include <gtest/gtest.h>
#include "components/esm/esmcommon.hpp"

TEST(EsmFixedString, operator__eq_ne)
{
    {
        SCOPED_TRACE("asdc == asdc");
        ESM::NAME name;
        name.assign("asdc");
        char s[4] = {'a', 's', 'd', 'c'};
        std::string ss(s, 4);

        EXPECT_TRUE(name == s);
        EXPECT_TRUE(name == ss.c_str());
        EXPECT_TRUE(name == ss);
    }
    {
        SCOPED_TRACE("asdc == asdcx");
        ESM::NAME name;
        name.assign("asdc");
        char s[5] = {'a', 's', 'd', 'c', 'x'};
        std::string ss(s, 5);

        EXPECT_TRUE(name != s);
        EXPECT_TRUE(name != ss.c_str());
        EXPECT_TRUE(name != ss);
    }
    {
        SCOPED_TRACE("asdc == asdc[NULL]");
        ESM::NAME name;
        name.assign("asdc");
        char s[5] = {'a', 's', 'd', 'c', '\0'};
        std::string ss(s, 5);

        EXPECT_TRUE(name == s);
        EXPECT_TRUE(name == ss.c_str());
        EXPECT_TRUE(name == ss);
    }
}

TEST(EsmFixedString, empty_strings)
{
    {
        SCOPED_TRACE("4 bytes");
        ESM::NAME empty = ESM::NAME();
        EXPECT_TRUE(empty == "");
        EXPECT_TRUE(empty == static_cast<uint32_t>(0));
        EXPECT_TRUE(empty != "some string");
        EXPECT_TRUE(empty != static_cast<uint32_t>(42));
    }
    {
        SCOPED_TRACE("32 bytes");
        ESM::NAME32 empty = ESM::NAME32();
        EXPECT_TRUE(empty == "");
        EXPECT_TRUE(empty != "some string");
    }
}

TEST(EsmFixedString, struct_size)
{
    ASSERT_EQ(4, sizeof(ESM::NAME));
    ASSERT_EQ(32, sizeof(ESM::NAME32));
    ASSERT_EQ(64, sizeof(ESM::NAME64));
    ASSERT_EQ(256, sizeof(ESM::NAME256));
}

TEST(EsmFixedString, is_pod)
{
     ASSERT_TRUE(std::is_pod<ESM::NAME>::value);
     ASSERT_TRUE(std::is_pod<ESM::NAME32>::value);
     ASSERT_TRUE(std::is_pod<ESM::NAME64>::value);
     ASSERT_TRUE(std::is_pod<ESM::NAME256>::value);
}