| CMake Error at .*/Modules/ExternalData.cmake:[0-9]+ \(message\): | |
| Data file referenced by argument | |
| DATA{../NotUnderRoot.txt} | |
| does not lie under the top-level source directory | |
| .*/Tests/RunCMake/ExternalData | |
| Call Stack \(most recent call first\): | |
| .* | |
| NotUnderRoot.cmake:2 \(ExternalData_Add_Test\) |