| 103 | |
| 104 | |
| 105 | def test_backtrace(): |
| 106 | bts = [] |
| 107 | cur_frame = sys._getframe(0) |
| 108 | start_lineno = cur_frame.f_lineno |
| 109 | cur_frame.f_trace = lambda *_: 1 |
| 110 | |
| 111 | def gen(): |
| 112 | for i in range(10): |
| 113 | bts.append(_mge_backtrace()) |
| 114 | yield i |
| 115 | |
| 116 | ge = gen() |
| 117 | next(ge) |
| 118 | next(ge) |
| 119 | |
| 120 | def func(): |
| 121 | return next(ge) |
| 122 | |
| 123 | func() |
| 124 | bt_lines = [] |
| 125 | for bt in bts: |
| 126 | lines = [] |
| 127 | for path in bt.split("\n")[-3:-1]: |
| 128 | lines.append(int(path.split(",")[1].split()[1])) |
| 129 | bt_lines.append([i - start_lineno for i in lines]) |
| 130 | # test if backtrace line numbers are correct |
| 131 | assert cur_frame.f_trace(0, 0, 0) == 1 |
| 132 | assert bt_lines == [[9, 5], [10, 5], [13, 5]] |
| 133 | cache_id = [] |
| 134 | |
| 135 | def get_cache_id(): |
| 136 | cache_id.append(_get_frame_cache_id()) |
| 137 | |
| 138 | threads = [threading.Thread(target=get_cache_id) for i in range(10)] |
| 139 | for t in threads: |
| 140 | t.start() |
| 141 | t.join() |
| 142 | assert len(set(cache_id)) == 10 |