avajs/ava

Print warning when test files take a disproportionate amount of time to declare tests

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#2,565 建立於 2020年8月22日

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 (2 留言) (4 反應) (1 負責人)JavaScript (20,600 star) (1,408 fork)batch import
help wantedscope:reportersscope:scheduling

描述

Based on feedback from @shusson in https://github.com/avajs/ava/issues/2268#issuecomment-676513972 it would be interesting if we could instrument how long it takes between AVA loading the test file to tests being declared.

This time is not taken by AVA itself, but instead by the test and project code. There are likely optimizations possible in the project that is using AVA.

If this takes a disproportionate amount of time of the overall test run (5%? 10%?) we should print a warning after the test run has completed.

貢獻者指南

技術棧
javascriptnodejs
領域
testingperformance
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
half day
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Basic understanding of AVA internalsNode.js timing APIs
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
55
研究方向
Examine the test loading workflow in AVA, specifically the `lib/runner.js` or similar files that handle test declaration. Look at how long it takes from loading a test file to the first test declaration. Use `performance.now()` or similar to measure durations and compare to total test run time. Check existing comments on issue #2268 for context. The warning should be printed after the test run completes if the loading time exceeds a threshold like 5% or 10% of total time.