golang/go

x/tools/gopls: renaming functions should rename corresponding test functions

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#74378 opened on Jun 19, 2025

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 (17 comments) (5 reactions) (1 assignee)Go (133,883 stars) (19,008 forks)batch import
FeatureRequestToolsgoplshelp wanted

Description

https://github.com/user-attachments/assets/cf57b295-ab3c-4888-aca1-3dd309a521b7

Renaming a function also renames references to it. If there is a correspondingly named test function, it'd make sense to also rename it (TestHello to TestFoo when Hello renamed to Foo). Keeping the names in sync, and reducing work burden.

Contributor guide

Tech stack
go
Domain
developer experiencetooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Go programming languagegopls internalsunderstanding of code renaming
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
The issue proposes renaming test functions (e.g., TestFoo to TestBar) when the original function is renamed. The implementation likely resides in the gopls refactoring package under x/tools/gopls/internal/analysis/rename or similar. Check the current rename logic to see how it handles function renames and test function patterns. Review comments for any design discussions or partial solutions. Since the issue is assigned, check the assignee's progress and whether a PR is in development. Note that Go test functions follow the naming convention 'Test' + exported function name; the rename feature should detect and update these accordingly.