Parameterized Test - Refactored

@ParameterizedTest
@CsvSource({
  "/abc/def,      /abc,       /",
  "abc/def\\ghi,  abc/def,    abc",
  "C:\\abc\\def,  C:\\abc,    C:\\"
})
void getParent(String path, String parent, String subParent) {
  FilePath fp = new FilePath(null, path);
  assertEquals(parent, (fp = fp.getParent()).getRemote());
  assertEquals(subParent, (fp = fp.getParent()).getRemote());
  assertNull(fp.getParent());
}