_testdata/custom.txt|5| range test 1 (line only)
_testdata/custom.txt|5| range test 2 (same line)
_testdata/custom.txt|6 col 2| range test 3 (with line-break)
_testdata/custom.txt|6 col 2| range test 4 (with line-break)
_testdata/custom.txt|12 col 5| range test 5 (within line)
_testdata/custom.txt|3 col 5| severity test 1 (INFO)
_testdata/custom.txt|3 col 4| severity test 2 (INFO)
_testdata/custom.txt|3 col 5| severity test 3 (WARNING)
_testdata/custom.txt|3 col 5| severity test 4 (ERROR)
_testdata/custom.txt|3 col 5| code test 1 (rule only)
_testdata/custom.txt|3 col 5| code test 2 (rule w/ URL)
_testdata/custom.txt|3| source test
_testdata/custom.txt|16 col 1| diagnostic range != suggestion range
_testdata/custom.txt|19| test related location
_testdata/custom.txt|| test file comment