These two tests fail:
{{
CommandExtractorServiceTest. testImportFile
MultiLineImportFileTest. testImportFile
}}

Debugging revealed the values being compared.

multiLineText   String       "Multi-line comment line 1\n-- line 2\'\n/* line 3 */"
expected        String       "Multi-line comment line 1\r\n-- line 2\'\r\n/* line 3 */"

Just change the expected value not to use system-dependent new lines, and it should be fine.