| 31 | |
| 32 | |
| 33 | def test_stack_copy(): |
| 34 | s1 = Stack() |
| 35 | s1['var'] = 'value1' |
| 36 | assert s1['var'] == 'value1' |
| 37 | |
| 38 | s1.push() |
| 39 | s1['another'] = 'value2' |
| 40 | assert s1['var'] == 'value1' |
| 41 | assert s1['another'] == 'value2' |
| 42 | |
| 43 | s2 = s1.copy() |
| 44 | assert s1 is not s2 |
| 45 | assert set(s1.frame.variables) == set(s2.frame.variables) |
| 46 | assert s2.frame is not s1.frame |
| 47 | assert s2.bottom is not s1.bottom |
| 48 | assert s2.frame is not s2.bottom |
| 49 | assert s2['var'] == 'value1' |
| 50 | assert s2['another'] == 'value2' |
| 51 | |
| 52 | s2['var'] = 'new_value' |
| 53 | assert s2['var'] == 'new_value' |
| 54 | assert s1['var'] == 'value1' |