find-test-names
v1.29.1
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Given a Mocha / Cypress spec file, returns the list of suite and test names
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find-test-names
Given a Mocha / Cypress spec file, returns the list of suite and test names
Install
# install using NPM, probably as a dev dependency
$ npm i -D find-test-names
# install using Yarn
$ yarn add -D find-test-names
Use
const { getTestNames } = require('find-test-names')
const result = getTestNames(specSourceCode)
// { "suiteNames": [], "testNames": [], "tests": [] }
The tests
is a list with each test and suite name, and optional list of tags.
// spec.js
it('works', {tags: ['@user']}, () => { ... })
// found test names
// { tests: [{ name: 'works', tags: ['@user'] }] }
withStructure
You can get the entire structure of suites and tests by passing true
argument
const result = getTestNames(specSourceCode, true)
// use the result.structure array
To view this in action, use npm run demo-structure
which points at bin/find-tests.js
Pending tests
The tests it.skip
are extracted and have the property pending: true
setEffectiveTags
Often, you want to have each test and see which tags it has and what parent tags apply to it. You can compute for each test a list of effective tags and set it for each test.
// example spec code
describe('parent', { tags: '@user' }, () => {
describe('parent', { tags: '@auth' }, () => {
it('works a', { tags: '@one' }, () => {})
it('works b', () => {})
})
})
const { getTestNames, setEffectiveTags } = require('find-test-names')
const result = getTestNames(source, true)
setEffectiveTags(result.structure)
If you traverse the result.structure
, the test "works a" will have the effectiveTags
list with @user, @auth, @one
, and the test "works b" will have the effectiveTags
list with @user, @auth, @one
.
filterByEffectiveTags
Once you setEffectiveTags
, you can filter all tests by an effective tag. For example, to fid all tests with the given tag:
const {
getTestNames,
setEffectiveTags,
filterByEffectiveTags,
} = require('find-test-names')
const result = getTestNames(source, true)
setEffectiveTags(result.structure)
const tests = filterByEffectiveTags(result.structure, ['@one'])
Returns individual test objects.
Tip: you can pass the source code and the tags to the filterByEffectiveTags
function and let it parse it
const filtered = filterByEffectiveTags(source, ['@user'])
findEffectiveTestTags
Returns a single object with full test titles as keys. For each key, the value is the list of effective tags. See the find-effective-tags.js spec file.
findEffectiveTestTagsIn
You can use the utility method findEffectiveTestTagsIn(filename)
to let this module read the file from disk and find the effective tags that apply to each test by its full title.
requiredTags
The test and suite options object can have another list of tags called requiredTags
it(
'works a',
{
tags: '@one',
requiredTags: ['@data'],
},
() => {},
)
These tags also will be extracted and the effective required tags from the parent suites applied to the children tests.
Supports
- JSX in the source code
- TypeScript
tag variables
Typically, test tags are static literals, like
it('works', { tags: '@user' })
But sometimes you want to use variables to set them. To be able to statically analyze the source files, this package currently supports:
- local constants
const USER = '@user'
// in the same file
it('works', { tags: USER })
it('works', { tags: ['@sanity', USER] })
- local objects with literal property access
const TAGS = {
user: '@user',
}
// in the same file
it('works', { tags: TAGS.user })
it('works', { tags: ['@sanity', TAGS.user] })
Bin
This package includes bin/find-test-names.js that you can use from the command line
$ npx find-test-names <path to the spec file>
# prints the describe and test names found in the spec file
print-tests
Print found suites an tests
$ npx print-tests <spec pattern>
For example, in this repo
$ npx print-tests 'test-cy/**/*.js'
test-cy/spec-a.js
└─ Suite A
├─ works 1
└─ works 2
test-cy/spec-b.js
└─ Suite B
├─ works 1
└─ works 2
Pending tests and suites are marked with ⊙
character like this:
├─ first
├⊙ second
└⊙ last
Exclusive tests are shown with >
character like this:
├─ first
├> second
└─ last
If there are tags, they are shown after the name
├─ first [tag1, tag2]
├─ second [@sanity]
└─ last
If there are required test tags, they are shown after the test name using double brackets [[ ]]
├─ first [tag1, tag2]
├─ second [@sanity] [[clean]]
└─ last
Unknown test names
Sometimes a test name comes from a variable, not from a literal string.
// test name is a variable, not a literal string
const testName = 'nice'
it(testName, () => {})
In that case, the tags are still extracted. When printing, such tests have name <unknown test>
.
comment lines
If the test function has preceding comment lines, the comment line right before the test is extracted and included
// line 1
// line 2
// line 3
it('works', ...)
// extracted test object will have
// name: "works",
// comment: "line 3"
Debugging
Run with the environment variable DEBUG=find-test-names
to see verbose logs
$ DEBUG=find-test-names npx find-test-names
...
2023-02-28T12:45:21.074Z find-test-names parsing source as a script
2023-02-28T12:45:21.083Z find-test-names success!
2023-02-28T12:45:21.084Z find-test-names found test "has jsx component"
2023-02-28T12:45:21.084Z find-test-names found describe "parent"
Small print
Author: Gleb Bahmutov <[email protected]> © 2021
- @bahmutov
- glebbahmutov.com
- blog
- videos
- presentations
- cypress.tips
- Cypress Tips & Tricks Newsletter
- my Cypress courses
License: MIT - do anything with the code, but don't blame me if it does not work.
Support: if you find any problems with this module, email / tweet / open issue on Github
MIT License
Copyright (c) 2021 Gleb Bahmutov <[email protected]>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.