1 files changed, 43 insertions, 0 deletions
diff --git a/src/boost/libs/contract/test/specify/missing_check.cpp b/src/boost/libs/contract/test/specify/missing_check.cpp
new file mode 100644
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+++ b/src/boost/libs/contract/test/specify/missing_check.cpp
@@ -0,0 +1,43 @@
+
+// Copyright (C) 2008-2018 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0 (see accompanying
+// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
+// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
+
+// Test missing contract check declaration gives run-time error.
+
+struct err {};
+#ifndef BOOST_CONTRACT_ON_MISSING_CHECK_DECL
+    #error "build must define ON_MISSING_CHECK_DECL=`{ throw err(); }`"
+#endif
+
+#include <boost/contract/function.hpp>
+#include <boost/contract/check.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+int main() {
+    boost::contract::check c = boost::contract::function() // Test this is OK.
+        .precondition([] {})
+        .old([] {})
+        .postcondition([] {})
+    ;
+
+    try {
+        boost::contract::function() // Test no `check c = ...` errors.
+            .precondition([] {})
+            .old([] {})
+            .postcondition([] {})
+        ;
+        #if     !defined(BOOST_CONTRACT_NO_PRECONDITIONS) || \
+                !defined(BOOST_CONTRACT_NO_POSTCONDITIONS) || \
+                !defined(BOOST_CONTRACT_NO_INVARIANTS)
+            BOOST_TEST(false); // Error, must throw.
+        #endif
+    } catch(err const&) {
+        // OK, threw as expected.
+    } catch(...) {
+        BOOST_TEST(false); // Error, unexpected throw.
+    }
+    return boost::report_errors();
+}
+