1 files changed, 133 insertions, 0 deletions
diff --git a/src/boost/libs/contract/test/old/if_copyable.cpp b/src/boost/libs/contract/test/old/if_copyable.cpp
new file mode 100644
index 00000000..0c3738f3
--- /dev/null
+++ b/src/boost/libs/contract/test/old/if_copyable.cpp
@@ -0,0 +1,133 @@
+
+// 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 old values of non-copyable types.
+
+#include "if_copyable.hpp"
+#include <boost/contract/public_function.hpp>
+#include <boost/contract/function.hpp>
+#include <boost/contract/base_types.hpp>
+#include <boost/contract/override.hpp>
+#include <boost/contract/old.hpp>
+#include <boost/contract/check.hpp>
+#include <boost/contract/assert.hpp>
+#include <boost/noncopyable.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+unsigned old_checks;
+
+template<typename T>
+struct b {
+    virtual void next(T& x, boost::contract::virtual_* v = 0) {
+        boost::contract::old_ptr_if_copyable<T> old_x =
+                BOOST_CONTRACT_OLDOF(v, x);
+        boost::contract::check c = boost::contract::public_function(v, this)
+            .postcondition([&] {
+                if(old_x) {
+                    BOOST_CONTRACT_ASSERT(x == *old_x + T(1));
+                    ++old_checks;
+                }
+            })
+        ;
+        ++x;
+    }
+    BOOST_CONTRACT_OVERRIDE(next)
+};
+
+template<typename T>
+struct a
+    #define BASES public b<T>
+    : BASES
+{
+    typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
+    #undef BASES
+
+    virtual void next(T& x, boost::contract::virtual_* v = 0) /* override */ {
+        boost::contract::old_ptr_if_copyable<T> old_x =
+                BOOST_CONTRACT_OLDOF(v, x);
+        boost::contract::check c = boost::contract::public_function<
+                override_next>(v, &a::next, this, x)
+            .postcondition([&] {
+                if(old_x) {
+                    BOOST_CONTRACT_ASSERT(x == *old_x + T(1));
+                    ++old_checks;
+                }
+            })
+        ;
+        ++x;
+    }
+    BOOST_CONTRACT_OVERRIDE(next)
+};
+
+template<typename T>
+void next(T& x) {
+    boost::contract::old_ptr_if_copyable<T> old_x = BOOST_CONTRACT_OLDOF(x);
+    boost::contract::check c = boost::contract::function()
+        .postcondition([&] {
+            if(old_x) {
+                BOOST_CONTRACT_ASSERT(x == *old_x + T(1));
+                ++old_checks;
+            }
+        })
+    ;
+    ++x;
+}
+    
+int main() {
+    int i = 1; // Test built-in copyable type.
+    cp c(1); // Test custom copyable type.
+    ncp n(1); // Test non-copyable type.
+
+    // Test free functions (old values without `v`).
+
+    unsigned cnt =
+        #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
+            1
+        #else
+            0
+        #endif
+    ;
+
+    old_checks = 0;
+    next(i);
+    BOOST_TEST_EQ(old_checks, cnt);
+    
+    old_checks = 0;
+    next(c);
+    BOOST_TEST_EQ(old_checks, cnt);
+
+    old_checks = 0;
+    next(n);
+    BOOST_TEST_EQ(old_checks, 0u);
+
+    // Test virtual functions (old values with `v`).
+    
+    cnt =
+        #ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
+            2
+        #else
+            0
+        #endif
+    ;
+
+    a<int> ai;
+    old_checks = 0;
+    ai.next(i);
+    BOOST_TEST_EQ(old_checks, cnt);
+    
+    a<cp> ac;
+    old_checks = 0;
+    ac.next(c);
+    BOOST_TEST_EQ(old_checks, cnt);
+
+    a<ncp> an;
+    old_checks = 0;
+    an.next(n);
+    BOOST_TEST_EQ(old_checks, 0u);
+
+    return boost::report_errors();
+}
+