python config_error ai_generated true

AssertionError：assert 'user created' in [] 其中 [] = caplog.messages

AssertionError: assert 'user created' in [] where [] = caplog.messages

ID: python/pytest-caplog-no-logs-captured

其他格式: JSON · Markdown 中文 · English

80%修复率

86%置信度

0证据数

2024-09-21首次发现

版本兼容性

版本	状态	引入	弃用	备注
7.x	active	—	—	—
8.x	active	—	—	—

根因分析

当根 logger 未配置 handler 时，caplog 默认只捕获 WARNING 及以上级别的记录；或者应用程序使用了 propagate=False 的自定义 logger。必须启用传播才能让 caplog 拦截记录。

English

caplog only captures records at WARNING or above by default when the root logger has no handler configured, or the application uses a custom logger with propagate=False. Propagation must be enabled for caplog to intercept records.

generic

解决方案

95% 成功率

def test_create_user(caplog):
    caplog.set_level(logging.INFO, logger='myapp')
    create_user('[email protected]')
    assert 'user created' in caplog.text

# in myapp/__init__.py
logger = logging.getLogger('myapp')
logger.propagate = True

93% 成功率

def test_create_user(caplog):
    with caplog.at_level(logging.INFO, logger='myapp'):
        create_user('[email protected]')
    assert any('user created' in r.message for r in caplog.records)

无效尝试

常见但无效的做法:

90% 失败
Clearing removes whatever was captured; if nothing was captured to begin with, the list stays empty.
85% 失败
Logging does not necessarily write to stdout; the logger may use a file or syslog handler, so capsys captures nothing.