swiftlang/swift-package-manager

Add support for listing all test tags

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#8,889 opened on Jul 2, 2025

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enhancementgood first issueswift test

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Description

Description

Once https://github.com/swiftlang/swift-testing/issues/591 is resolved, it would be ideal to have an option where swift test can provide the list of all tags available in a given package.

This relates to https://github.com/swiftlang/swift-testing/issues/591

Expected behavior

swift test is augmented to provide a unique list of available tags, which, optionally, can be used to enable/skip execution.

Actual behavior

There is no feature to list tags.

Steps to reproduce

No response

Swift Package Manager version/commit hash

No response

Swift & OS version (output of swift --version && uname -a)

No response

Contributor guide

Research direction
Implement a new option for `swift test` to list all tags defined in test targets. This involves parsing test metadata and outputting unique tags. Review existing test discovery logic and add a command line flag such as ` list tags`.
Tech stack
swift
Domain
clitesting
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
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.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Swift
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65