diff --git a/test/testmathlib.cpp b/test/testmathlib.cpp
index 3489f6fdd..f31902114 100644
--- a/test/testmathlib.cpp
+++ b/test/testmathlib.cpp
@@ -155,6 +155,16 @@ private:
         ASSERT_EQUALS("4611686018427387904",  MathLib::divide("-9223372036854775808", "-2")); // #6679
 
 
+        // invoke for each supported action
+        ASSERT_EQUALS("3", MathLib::calculate("2", "1", '+'));
+        ASSERT_EQUALS("1", MathLib::calculate("2", "1", '-'));
+        ASSERT_EQUALS("2", MathLib::calculate("2", "1", '*'));
+        ASSERT_EQUALS("2", MathLib::calculate("2", "1", '/'));
+        ASSERT_EQUALS("0", MathLib::calculate("2", "1", '%'));
+        ASSERT_EQUALS("0", MathLib::calculate("1", "2", '&'));
+        ASSERT_EQUALS("1", MathLib::calculate("1", "1", '|'));
+        ASSERT_EQUALS("1", MathLib::calculate("0", "1", '^'));
+
         // Unknown action should throw exception
         ASSERT_THROW(MathLib::calculate("1","2",'j'),InternalError);
     }