我正在使用karma和mocha的{{1}}测试运行程序进行单元测试。我有大约577个测试用例。在大多数情况下，当我们重复运行自动化程序时，所有测试用例都通过了，并且计数正确显示如下，
chai但是有时候有时候会跳过一些计数不是一直恒定的测试用例，
[2020-10-14 05:28:42] DEBUG: [1A[2KFirefox 81.0 (Windows 10): Executed 576 of 577[32m SUCCESS[39m (0 secs / 6 mins 7.585 secs)
[2020-10-14 05:28:43] DEBUG: [1A[2KFirefox 81.0 (Windows 10): Executed 577 of 577[32m SUCCESS[39m (0 secs / 6 mins 7.725 secs)
[2020-10-14 05:28:43] DEBUG: [1A[2KFirefox 81.0 (Windows 10): Executed 577 of 577[32m SUCCESS[39m (10 mins 26.587 secs / 6 mins 7.725 secs)
[2020-10-14 05:28:43] DEBUG: [32mTOTAL: 577 SUCCESS[39m
[2020-10-14 05:28:43] DEBUG: BROWSER FirefoxHeadless COMPLETED
[2020-10-14 05:28:43] DEBUG: SUCCESS 577
[2020-10-14 05:28:43] DEBUG: FAILED 0
[2020-10-14 05:28:43] DEBUG: SKIPPED 0
[2020-10-14 05:28:43] DEBUG: TOTAL 577
[2020-10-14 05:28:43] DEBUG: ERROR false
[2020-10-14 05:28:43] DEBUG: DISCONNECTED false
[2020-10-14 05:28:43] DEBUG: TOTAL TIME 626587 ms
如果您在这里看到没有失败的测试用例。我已经在同一组测试用例上并行运行了以上2个自动化操作。如何避免测试用例被静默跳过？