Add tests

tests/unittests/CMakeLists.txt

@@ -18,6 +18,7 @@ add_executable(unittests
   test_utils.cpp
   test_hash.cpp
   test_binarystream.cpp
+  test_iostream.cpp
   test_pe.cpp
   test_elf.cpp
   test_oat.cpp

tests/unittests/test_iostream.cpp

@@ -0,0 +1,32 @@
+/* Copyright 2017 - 2023 R. Thomas
+ * Copyright 2017 - 2023 Quarkslab
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <catch2/catch_session.hpp>
+#include <catch2/catch_test_macros.hpp>
+
+#include "LIEF/span.hpp"
+#include "LIEF/iostream.hpp"
+
+TEST_CASE("lief.test.iostream", "[lief][test][iostream]") {
+  SECTION("Span") {
+    std::vector<uint8_t> buffer = {1, 2, 3, 4};
+    LIEF::span<uint8_t> span_buffer = buffer;
+
+    LIEF::vector_iostream ios;
+    ios.write(span_buffer);
+
+    REQUIRE(ios.raw() == buffer);
+  }
+}