avajs/ava

Support running a test function multiple times with different data

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#2980 opened on Feb 26, 2022

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 (11 comments) (0 reactions) (0 assignees)JavaScript (20,600 stars) (1,408 forks)batch import
enhancementhelp wantedscope:test-interface

Description

You can already do this with macros, but it's a bit verbose and complicated. It would be nice to simplify the common case of just running the same test over an array of fixtures.

Possible API:

test('validate email', t => {
	console.log(t.data);
	t.true(isString(t.data));
})
.data([
	'foo',
	'bar'
]);
//=> 'foo'
//=> 'bar'

Contributor guide

Tech stack
javascriptnodejs
Domain
testingdeveloper experience
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.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
understanding of AVA's macro featurebasic JavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Examine AVA's existing macro implementation in test.js or runner.js to understand how tests are defined and executed. Design a `.data()` method that iterates over an array of fixtures, calling the test function for each item. Consider how to integrate with AVA's current test lifecycle and serialization. Review discussions in the issue for potential API refinements.