message: Let's try to make travis green
  by enabling DTEST_DSN_W conditionally...
diff: @@ -128,7 +128,14 @@ before_script:
  script:
  - mkdir -p build
  - cd build
  - - cmake .. -G Ninja -DCMAKE_CXX_COMPILER=`which $CXX` -DCMAKE_C_COMPILER=`which $CC` $CMAKE_FLAGS -DTEST_DSN=clickhouse_localhost -DTEST_DSN_W=clickhouse_localhost_w && cmake --build . --target all
  + - CMAKE_FLAGS="$CMAKE_FLAGS -G Ninja -DCMAKE_CXX_COMPILER=`which $CXX` -DCMAKE_C_COMPILER=`which $CC` -DTEST_DSN=clickhouse_localhost"
  + # MS ODBC uses UCS2 for widechars (2 bytes per char)
  + # unixODBC do the same by default (2 bytes per char), but can be switched to wchar_t (4 bytes) (SQL_WCHART_CONVERT)
  + # iODBC always use wchar_t (4 bytes)
  + # so driver compiled for iODBC will not work properly with unixODBC software
  + # our tests use unixODBC, so we enable unicode test only for uniexODBC driver build
  + - if [ -n "$ODBC_LIB" ]; then CMAKE_FLAGS="$CMAKE_FLAGS -DTEST_DSN_W=clickhouse_localhost_w"; fi
  + - cmake .. $CMAKE_FLAGS && cmake --build . --target all
  # unit-tests
  - ctest -R '.*-ut.*'
  # more complicated tests
  