Unit test FileTests.testFiles fails on Linux

[kareman]

With the error message

Test Case 'FileTests.testFiles' started at 01:10:40.767
/home/name/Libraries/FileSmith/Tests/FileSmithTests/FileTests.swift:63: error: FileTests.testFiles : XCTAssertFalse failed - 
/home/name/Libraries/FileSmith/Tests/FileSmithTests/FileTests.swift:72: error: FileTests.testFiles : XCTAssertThrowsError failed: did not throw error - 
Test Case 'FileTests.testFiles' failed (0.004 seconds).

https://github.com/kareman/FileSmith/blob/master/Tests/FileSmithTests/FileTests.swift#L13

[kareman]

Uncomment this to run the test on Linux.