1 files changed, 168 insertions, 0 deletions
diff --git a/libs/algorithm/test/mismatch_test.cpp b/libs/algorithm/test/mismatch_test.cpp
new file mode 100644
index 000000000..61a7506a8
--- /dev/null
+++ b/libs/algorithm/test/mismatch_test.cpp
@@ -0,0 +1,168 @@
+/* 
+   Copyright (c) Marshall Clow 2013.
+
+   Distributed under the Boost Software License, Version 1.0. (See accompanying
+   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    For more information, see http://www.boost.org
+*/
+
+#include <boost/config.hpp>
+#include <boost/algorithm/cxx14/mismatch.hpp>
+
+#include "iterator_test.hpp"
+
+#define BOOST_TEST_MAIN
+#include <boost/test/unit_test.hpp>
+
+template <typename T>
+bool eq ( const T& a, const T& b ) { return a == b; }
+
+template <typename T>
+bool never_eq ( const T&, const T& ) { return false; }
+
+namespace ba = boost::algorithm;
+
+template <typename Iter1, typename Iter2>
+bool iter_eq ( std::pair<Iter1, Iter2> pr, Iter1 first, Iter2 second ) {
+    return pr.first == first && pr.second == second;
+    }
+
+void test_mismatch ()
+{
+//  Note: The literal values here are tested against directly, careful if you change them:
+    int num[] = { 1, 1, 2, 3, 5 };
+    const int sz = sizeof (num)/sizeof(num[0]);
+    
+    
+//  No mismatch for empty sequences
+    BOOST_CHECK ( iter_eq ( 
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num), 
+                       input_iterator<int *>(num),     input_iterator<int *>(num)),
+                input_iterator<int *>(num), input_iterator<int *>(num)));
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num), 
+                       input_iterator<int *>(num),     input_iterator<int *>(num),
+                       never_eq<int> ),
+                input_iterator<int *>(num), input_iterator<int *>(num)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( random_access_iterator<int *>(num),     random_access_iterator<int *>(num), 
+                       random_access_iterator<int *>(num),     random_access_iterator<int *>(num),
+                       never_eq<int> ),
+                random_access_iterator<int *>(num), random_access_iterator<int *>(num)));
+                              
+//  Empty vs. non-empty mismatch immediately
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num), 
+                       input_iterator<int *>(num),     input_iterator<int *>(num + 1)),
+                input_iterator<int *>(num),     input_iterator<int *>(num)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + 2), 
+                       input_iterator<int *>(num),     input_iterator<int *>(num)),
+                input_iterator<int *>(num + 1), input_iterator<int *>(num)));
+                    
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num + 2), 
+                       random_access_iterator<int *>(num),     random_access_iterator<int *>(num)),
+                random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num)));
+
+//  Single element sequences are equal if they contain the same value
+    BOOST_CHECK ( iter_eq ( 
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + 1)),
+                input_iterator<int *>(num + 1), input_iterator<int *>(num + 1)));
+                       
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       eq<int> ),
+                input_iterator<int *>(num + 1), input_iterator<int *>(num + 1)));
+                    
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( random_access_iterator<int *>(num),     random_access_iterator<int *>(num + 1),
+                       random_access_iterator<int *>(num),     random_access_iterator<int *>(num + 1),
+                       eq<int> ),
+                random_access_iterator<int *>(num + 1), random_access_iterator<int *>(num + 1)));
+
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       never_eq<int> ),
+               input_iterator<int *>(num),     input_iterator<int *>(num)));
+               
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( random_access_iterator<int *>(num),     random_access_iterator<int *>(num + 1),
+                       random_access_iterator<int *>(num),     random_access_iterator<int *>(num + 1),
+                       never_eq<int> ),
+               random_access_iterator<int *>(num),     random_access_iterator<int *>(num)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)),
+               input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       input_iterator<int *>(num + 1), input_iterator<int *>(num + 2),
+                       eq<int> ),
+               input_iterator<int *>(num + 1), input_iterator<int *>(num + 2)));
+
+    BOOST_CHECK ( iter_eq (
+            ba::mismatch ( input_iterator<int *>(num + 2), input_iterator<int *>(num + 3), 
+                           input_iterator<int *>(num),     input_iterator<int *>(num + 1)),
+                           input_iterator<int *>(num + 2), input_iterator<int *>(num)));
+                           
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num + 2), input_iterator<int *>(num + 3),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + 1),
+                       eq<int> ),
+               input_iterator<int *>(num + 2), input_iterator<int *>(num)));
+                       
+                              
+                              
+//  Identical long sequences are equal. 
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + sz),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + sz)),
+            input_iterator<int *>(num + sz), input_iterator<int *>(num + sz)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + sz),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + sz),
+                       eq<int> ),
+            input_iterator<int *>(num + sz), input_iterator<int *>(num + sz)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),     input_iterator<int *>(num + sz),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + sz),
+                       never_eq<int> ),
+            input_iterator<int *>(num),     input_iterator<int *>(num)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num),             input_iterator<int *>(num + sz),
+                       random_access_iterator<int *>(num),     random_access_iterator<int *>(num + sz),
+                       never_eq<int> ),
+            input_iterator<int *>(num),     random_access_iterator<int *>(num)));
+
+//  different sequences are different
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + sz),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + sz)),
+            input_iterator<int *>(num + 2), input_iterator<int *>(num + 1)));
+
+    BOOST_CHECK ( iter_eq (
+        ba::mismatch ( input_iterator<int *>(num + 1), input_iterator<int *>(num + sz),
+                       input_iterator<int *>(num),     input_iterator<int *>(num + sz),
+                       eq<int> ),
+            input_iterator<int *>(num + 2), input_iterator<int *>(num + 1)));
+
+}
+
+
+BOOST_AUTO_TEST_CASE( test_main )
+{
+  test_mismatch ();
+}