separate unittest folder

unittests/container/TestFixedArrayList.cpp

@@ -0,0 +1,38 @@
+#include <fsfw/container/FixedArrayList.h>
+#include <fsfw/returnvalues/HasReturnvaluesIF.h>
+
+#include <catch2/catch_test_macros.hpp>
+
+#include "fsfw_tests/unit/CatchDefinitions.h"
+
+TEST_CASE("FixedArrayList Tests", "[TestFixedArrayList]") {
+  INFO("FixedArrayList Tests");
+  using testList = FixedArrayList<uint32_t, 260, uint16_t>;
+  testList list;
+  REQUIRE(list.size == 0);
+  REQUIRE(list.insert(10) == static_cast<int>(HasReturnvaluesIF::RETURN_OK));
+  REQUIRE(list.size == 1);
+  REQUIRE(list.maxSize() == 260);
+  SECTION("Copy Constructor") {
+    testList list2(list);
+    REQUIRE(list2.size == 1);
+    REQUIRE(list2[0] == 10);
+    REQUIRE(list.maxSize() == 260);
+  };
+  SECTION("Assignment copy") {
+    testList list2;
+    REQUIRE(list2.size == 0);
+    list2 = list;
+    REQUIRE(list2.size == 1);
+    REQUIRE(list2[0] == 10);
+    REQUIRE(list.maxSize() == 260);
+  };
+  SECTION("Fill") {
+    for (auto i = 1; i < 260; i++) {
+      REQUIRE(list.insert(i) == static_cast<int>(HasReturnvaluesIF::RETURN_OK));
+    }
+    REQUIRE(list.insert(260) == static_cast<int>(ArrayList<uint32_t, uint16_t>::FULL));
+    list.clear();
+    REQUIRE(list.size == 0);
+  }
+}