1 files changed, 34 insertions, 0 deletions
diff --git a/src/catch2/matchers/catch_matchers_container_properties.cpp b/src/catch2/matchers/catch_matchers_container_properties.cpp
new file mode 100644
index 0000000..f0c535b
--- /dev/null
+++ b/src/catch2/matchers/catch_matchers_container_properties.cpp
@@ -0,0 +1,34 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+
+#include <catch2/matchers/catch_matchers_container_properties.hpp>
+#include <catch2/internal/catch_reusable_string_stream.hpp>
+
+namespace Catch {
+namespace Matchers {
+
+    std::string IsEmptyMatcher::describe() const {
+        return "is empty";
+    }
+
+    std::string HasSizeMatcher::describe() const {
+        ReusableStringStream sstr;
+        sstr << "has size == " << m_target_size;
+        return sstr.str();
+    }
+
+    IsEmptyMatcher IsEmpty() {
+        return {};
+    }
+
+    HasSizeMatcher SizeIs(std::size_t sz) {
+        return HasSizeMatcher{ sz };
+    }
+
+} // end namespace Matchers
+} // end namespace Catch