Unverified50% confidenceFactExact time
Google在2016年的一项内部研究中发现，其测试套件中约16%的测试存在不稳定性
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8/26/2026
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UnverifiedGoogle's engineering practice report indicates that approximately 16% of test failures in large codebases are flaky failures (non-deterministic failures).75% similarVerifiedGoogle's engineering practice research indicates that code review can detect approximately 60% of defects, far exceeding the approximately 30% detection rate of unit testing.66% similarUnverified据行业调研，企业级测试套件中约30%-40%的维护时间花在修复因 selector 失效导致的测试失败上62% similarUnverifiedGoogle 内部统计数据表明，E2E 测试与单元测试的数量比例建议维持在 1:10 乃至更低62% similarUnverified微软研究院调查发现跨iOS/Android双平台维护的测试套件中，每次大版本UI改版平均会导致60%以上的测试用例失效60% similar
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