How and why you need to speed up tests

说明与用途

过多的测试导致资源耗尽和运行时间过长，拖慢了开发进度。通过减少测试、使用主机数据库、事务回滚和禁用触发器等策略，可以加快执行速度并提升效率。

问题

An excessive number of tests caused resource exhaustion and long test runtimes, slowing development.

结果

Adopting these practices reduced test execution time, mitigated resource exhaustion, and accelerated development cycles.

工作流

• Prohibit agents from writing tests for obvious changes (e.g., migration scripts, enum additions, dependency list changes).
• Prevent duplicate tests by combining similar checks into a single test and adding a test audit skill for agents.
• Raise application context only once for all tests to avoid repeated setup.
• Use host database instead of test containers to save Docker memory and startup time.
• Deploy database schema once for all tests and clean the database by rolling back transactions instead of deleting rows.
• Disable triggers before clearing tables to reduce test runtime.
• Run only tests affected by the current code changes during development.
• Adjust pipeline CPU core power‑saving mode to speed up tests.

证据

The tests started consuming too many resources. The test bench encountered: OOMError, memory exhaustion in the database, exhaustion of lock and database connection limits.

来源

If in spring a full test run took 10–15 minutes, in autumn it slowed down to 45 minutes.

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We save: on Docker memory (relevant for Macs), on the time it takes to start the test containers, and on the time spent recreating the database schema from scratch for each test.

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Disable triggers before clearing the tables in the test database. For me, this reduced the time required to run all tests by 15 minutes.

来源