// Keep entries sorted for easier comparison.
			sort.Strings(entries)
			if !checkResult(r.entries, entries) {
				t.Fatalf("expected = %s, got: %s", r.entries, entries)
			}
		}
	}
}

func TestReadDirN(t *testing.T) {
	testCases := []struct {
		numFiles    int
		n           int
		expectedNum int
	}{
		{0, 0, 0},
		{0, 1, 0},
		{1, 0, 0},
		{0, -1, 0},
		{1, -1, 1},
		{10, -1, 10},