message: Initialize TEST_DSN and TEST_DSN_W only if empty
diff: @@ -132,9 +132,14 @@ if (CH_ODBC_ENABLE_TESTING)
  enable_testing ()
  include (GoogleTest)
  + if (NOT TEST_DSN)
  set (TEST_DSN "${CH_ODBC_DEFAULT_DSN_ANSI}")
  + endif ()
  +
  + if (NOT TEST_DSN_W)
  set (TEST_DSN_W "${CH_ODBC_DEFAULT_DSN_UNICODE}")
  endif ()
  +endif ()
  foreach (config ${CMAKE_CONFIGURATION_TYPES_UC})
  set (CMAKE_${config}_POSTFIX "" CACHE STRING "" FORCE) # Don't append "d" or "md" to output lib name
  