[#1089] added decumentation

diff --git a/doc/devel/unit-tests.dox b/doc/devel/unit-tests.dox
index 9f4a1900704ca9e09a182acdf6a5b47dd78e2734..727deada859925e8277c11393d4f6da4eed8a99a 100644 (file)
--- a/doc/devel/unit-tests.dox
+++ b/doc/devel/unit-tests.dox
@@ -96,6 +96,10 @@ increase the time it takes each unit test to execute.
   The simplest way to enable a sanitizer is to add it to the CXXFLAGS
   environment variable in .configure by e.g. <i>-fsanitize=thread</i>.
 
+  When enabling lcov (code coverage), some gtest functions are detected as
+  not being thread safe. It is recommended to disable lcov when enabling
+  thread sanitizer.
+
 @section unitTestsDatabaseConfig Databases Configuration for Unit Tests
 
   With the use of databases requiring separate authorisation, there are