()
| 138 | |
| 139 | #[test] |
| 140 | fn test_tail() { |
| 141 | let df = sample_df(); |
| 142 | let t = df.tail(2); |
| 143 | assert_eq!(t.nrow(), 2); |
| 144 | assert_eq!(t["x"], Series::new(vec![3, 4])); |
| 145 | assert_eq!(t["y"], Series::new(vec![0.3, 0.4])); |
| 146 | } |
| 147 | |
| 148 | #[test] |
| 149 | fn test_tail_larger_than_nrow() { |