Add utility for checking two vectors are equal without caring about order

Author: thk123

unit/testing-utils/require_vectors_equal_unordered.h

@@ -0,0 +1,28 @@
+/*******************************************************************\
+
+ Module: Unit test utilities
+
+ Author: Diffblue Limited.
+
+\*******************************************************************/
+
+#ifndef CPROVER_TESTING_UTILS_REQUIRE_VECTORS_EQUAL_UNORDERED_H
+#define CPROVER_TESTING_UTILS_REQUIRE_VECTORS_EQUAL_UNORDERED_H
+
+#include <testing-utils/catch.hpp>
+#include <vector>
+
+/// Checks whether two vectors are equal, ignoring ordering
+/// \tparam T: The type of the vector contents
+/// \param actual: The vector to check
+/// \param expected: The vector to check against
+template <class T>
+void require_vectors_equal_unordered(
+  const std::vector<T> &actual,
+  const std::vector<T> &expected)
+{
+  REQUIRE(actual.size() == expected.size());
+  REQUIRE_THAT(actual, Catch::Matchers::Vector::ContainsMatcher<T>{expected});
+}
+
+#endif // CPROVER_TESTING_UTILS_REQUIRE_VECTORS_EQUAL_UNORDERED_H