If libhdf5 is installed, but not hdf5-tools, "make test" compares _output files to .output.h5 files, instead of either comparing _output files to .output ones or output.h5 to output.h5. The tests fail, even though manual comparison shows that the result and test files are equivalent.
Installing hdf5-tools and rerunning cmake and make fixes the issue.
If libhdf5 is installed, but not hdf5-tools, "make test" compares _output files to .output.h5 files, instead of either comparing _output files to .output ones or output.h5 to output.h5. The tests fail, even though manual comparison shows that the result and test files are equivalent. Installing hdf5-tools and rerunning cmake and make fixes the issue.