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#include <SFML/System/MemoryInputStream.hpp>
#include <catch2/catch_test_macros.hpp>
#include <array>
#include <ostream>
#include <string_view>
TEST_CASE("[System] sf::MemoryInputStream")
{
SECTION("Type traits")
{
STATIC_CHECK(std::is_copy_constructible_v<sf::MemoryInputStream>);
STATIC_CHECK(std::is_copy_assignable_v<sf::MemoryInputStream>);
STATIC_CHECK(std::is_nothrow_move_constructible_v<sf::MemoryInputStream>);
STATIC_CHECK(std::is_nothrow_move_assignable_v<sf::MemoryInputStream>);
}
using namespace std::literals::string_view_literals;
SECTION("Construction")
{
SECTION("Null data")
{
sf::MemoryInputStream memoryInputStream(nullptr, 0);
CHECK(memoryInputStream.read(nullptr, 0) == std::nullopt);
CHECK(memoryInputStream.seek(0) == std::nullopt);
CHECK(memoryInputStream.tell() == std::nullopt);
CHECK(memoryInputStream.getSize() == std::nullopt);
}
static constexpr auto input = "hello world"sv;
SECTION("Zero length")
{
sf::MemoryInputStream memoryInputStream(input.data(), 0);
CHECK(memoryInputStream.tell().value() == 0);
CHECK(memoryInputStream.getSize().value() == 0);
}
SECTION("Full length")
{
sf::MemoryInputStream memoryInputStream(input.data(), input.size());
CHECK(memoryInputStream.tell().value() == 0);
CHECK(memoryInputStream.getSize().value() == input.size());
}
}
SECTION("read()")
{
static constexpr auto input = "hello world"sv;
sf::MemoryInputStream memoryInputStream(input.data(), input.size());
CHECK(memoryInputStream.tell().value() == 0);
CHECK(memoryInputStream.getSize().value() == input.size());
// Read within input
std::array<char, 32> output{};
CHECK(memoryInputStream.read(output.data(), 5).value() == 5);
CHECK(std::string_view(output.data(), 5) == "hello"sv);
CHECK(memoryInputStream.tell().value() == 5);
CHECK(memoryInputStream.getSize().value() == input.size());
// Read beyond input
CHECK(memoryInputStream.read(output.data(), 100).value() == 6);
CHECK(std::string_view(output.data(), 6) == " world"sv);
CHECK(memoryInputStream.tell().value() == 11);
CHECK(memoryInputStream.getSize().value() == input.size());
}
SECTION("seek()")
{
static constexpr auto input = "We Love SFML!"sv;
sf::MemoryInputStream memoryInputStream(input.data(), input.size());
CHECK(memoryInputStream.tell().value() == 0);
CHECK(memoryInputStream.getSize().value() == input.size());
SECTION("Seek within input")
{
CHECK(memoryInputStream.seek(0).value() == 0);
CHECK(memoryInputStream.tell().value() == 0);
CHECK(memoryInputStream.seek(5).value() == 5);
CHECK(memoryInputStream.tell().value() == 5);
}
SECTION("Seek beyond input")
{
CHECK(memoryInputStream.seek(1'000).value() == input.size());
CHECK(memoryInputStream.tell().value() == input.size());
}
}
}
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