Updated documentation about fileextensions and unit tests.

(cherry picked from commit 799eb71)

Author: end2endzone

UserManual.md

@@ -296,7 +296,9 @@ For example, the following set a menu visible only when the user right-click on
 
 The `fileextensions` attribute validates a menu based on the file's extension selected by the user.
 
-If `fileextensions` attribute is specified, the file's extension selected by the user must match for the validation to be successful. To specify multiple extension, one must separate each extensions with the `;` character. If multiple file extensions are specified, **at least one** extension must match for the validation to be successful.
+If `fileextensions` attribute is specified, the file's extension selected by the user must match for the validation to be successful. To specify multiple file extension, one must separate each extensions with the `;` character. If multiple file extensions are specified, **at least one** extension must match for the validation to be successful.
+
+If multiple files are selected, the file extension of each element must match **at least one** allowed file extension for the validation to be successful.
 
 If `fileextensions` attribute is not specified, then the validation is successful.
 

test/TestValidator.cpp

@@ -198,6 +198,10 @@ namespace shellanything { namespace test
     //assert success when more file extensions are allowed
     v.SetFileExtensions("ini;txt;bat;doc;msc;dll;exe;xls;");
     ASSERT_TRUE( v.Validate(c) );
+
+    //assert failure when multiple files are selected and a single extension is missing
+    v.SetFileExtensions("dll;exe"); //missing msc file extension
+    ASSERT_FALSE( v.Validate(c) );
   }
   //--------------------------------------------------------------------------------------------------
   TEST_F(TestValidator, testFileExists)