Let's merge these ten tests into one test. e.g.

Assert.assertEquals(UnderFileSystem.parse(null), null);
Assert.assertEquals(UnderFileSystem.parse(""), null);
....
....
Pair<String, String> result = UnderFileSystem.parse("/path");
Assert.assertEquals(result.getFirst(), "/");
Assert.assertEquals(result.getSecond(), "/path");
result = UnderFileSystem.parse("file:///path");
Assert.assertEquals(result.getFirst(), "/");
Assert.assertEquals(result.getSecond(), "/path");
....
....