1 files changed, 30 insertions, 0 deletions
diff --git a/test/base/io/MemoryStreamTest.cpp b/test/base/io/MemoryStreamTest.cpp
new file mode 100644
index 00000000..684971b1
--- /dev/null
+++ b/test/base/io/MemoryStreamTest.cpp
@@ -0,0 +1,30 @@
+#include "cru/base/io/MemoryStream.h"
+#include "cru/base/io/Stream.h"
+
+#include <catch2/catch_test_macros.hpp>
+
+#include <algorithm>
+#include <cstddef>
+#include <ranges>
+
+TEST_CASE("MemoryStream should work.", "[io][stream]") {
+  using namespace cru::io;
+  const int size = 100;
+  std::vector<std::byte> buffer(size);
+
+  buffer[1] = std::byte(0xf0);
+  buffer[2] = std::byte(0x0f);
+
+  MemoryStream stream(buffer.data(), size, true);
+
+  REQUIRE(stream.CanRead());
+  REQUIRE(!stream.CanWrite());
+
+  std::vector<std::byte> buffer2(size * 2);
+
+  auto read = stream.Read(buffer2.data(), buffer2.size());
+  auto read2 = stream.Read(buffer2.data(), 1);
+  REQUIRE(read == size);
+  REQUIRE(std::ranges::equal(buffer, buffer2 | std::views::take(size)));
+  REQUIRE(read2 == Stream::kEOF);
+}