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cypress/ | ||
cypress.config.js | ||
.github/workflows/ | ||
.github/workflows/ | ||
.vscode/ | ||
renovate.json |
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Copyright (c) 2023-2024 Joshua [email protected] | ||
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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. |
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# @datashard/snapshot | ||
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> Adds value / object / DOM element snapshot testing support to Cypress test runner | ||
> Adds JSON Snapshot comparison to Cypress | ||
<details> | ||
<summary>Changes between <code>@datashard/snapshot</code> and <code>@cypress/snapshot</code></summary> | ||
<br> | ||
They're mostly the same, as this is a fork of the Latter, though it's not a drop-in replacement. | ||
## ⚠️ Breaking Changes ⚠️ | ||
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Unlike `@cypress/snapshot`, this saves snapshots in their own files with a sensible default and strives to have ongoing Support for future Cypress Versions | ||
- With V3, the `readFileMaybe` task has been removed, we now rely on `cy.fixture` internally. | ||
- the previous `SNAPSHOT_UPDATE` Environment/Config Variable has been changed to `updateSnapshots` | ||
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</details> | ||
> [!DANGER] | ||
This means that previous tests will likely be broken, *please make sure that your tests pass before updating to the latest version of this Plugin*. | ||
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<!-- [![NPM][npm-icon] ][npm-url] --> | ||
This current release will be released as `3.0.0-beta`, should Bugs be found by me or my Employer, I will open Issues/PRs to fix those, should anyone else find Bugs/Edgecases, etc. please open an Issue. | ||
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## Install | ||
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Requires [Node](https://nodejs.org/en/) version 10 or above. | ||
Requires Node 16 or above | ||
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```sh | ||
npm install --save-dev @datashard/snapshot | ||
npm i --save-dev @datashard/snapshot | ||
``` | ||
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## Import | ||
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After installing, you need to add this snippet within your Cypress Support File (default: `cypress/support/e2e.{js,ts}`) | ||
After Installing, you'll need to add the following import into your Commands/Support File | ||
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> by default this will be `cypress/support/e2e.js` | ||
```js | ||
require("@datashard/snapshot").register(); | ||
require('@datashard/snapshot').regsiter() | ||
``` | ||
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This registers a new command to create new snapshot or compare value to old snapshot | ||
This will register a new Command `.snapshot()`, to create and compare JSON Snapshots. | ||
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and add the following to your `cypress.config.{js,ts}` | ||
## Config | ||
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```js | ||
e2e: { | ||
setupNodeEvents(on, config) { | ||
require("@datashard/snapshot").tasks(on, config) | ||
}, | ||
``` | ||
You can pass `updateSnapshots` and `useFolders` as options in the `cypress.config.js` file | ||
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![Example Settings for the Module](./.github/assets/config.png) | ||
Alternatively, you can also add `snapshotUpdate` as an Environment Variable to update your snapshots. | ||
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> **Note** \ | ||
> \ | ||
> `@datashard/snapshot` **requires** the `readFileMaybe` plugin to be included, which can be easily done using the code above | ||
Simply pass `--env updateSnapshots=true` when running Cypress. | ||
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# Usage | ||
## Usage | ||
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Currently, if you want to take more than one snapshot, you need to pass a Step Name to prevent overwrites / test failures | ||
If properly added, usage of this plugin is rather simple, just add `.snapshot()` to cypress functions that return valid JSON. (i.e. `cy.wrap`) | ||
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When properly added, you can chain `.snapshot()` off of `cy` functions like `cy.wrap`, just make sure they return valid JSON. | ||
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### Example | ||
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```js | ||
describe("my tests", () => { | ||
describe("my test", () => { | ||
it("works", () => { | ||
cy.log("first snapshot"); | ||
cy.wrap({ foo: 42 }).snapshot("foo"); | ||
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}); | ||
``` | ||
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In the above case, you can find the stored snapshot in their own files, mentioned above them | ||
```jsonc | ||
// cypress/snapshots/my-tests-works-foo.json | ||
{ "foo": 42 } | ||
// cypress/snapshots/my-tests-works-bar.json | ||
{ "bar": 101 } | ||
``` | ||
If you change the site values, the saved snapshot will no longer match, throwing an error | ||
(picture taken from `cypress/snapshots/Arrays.json`) | ||
![Snapshot mismatch](.github/assets/updated-mismatch.png) | ||
Click on the `SNAPSHOT` step in the Command Log to see expected and current value printed in the DevTools. | ||
### Options | ||
You can control snapshot comparison and behavior through a few options. | ||
```js | ||
cy.get(...).snapshot({ | ||
snapshotName: 'Snapshot Name', // Overwrite the generated Snapshot name | ||
snapshotPath: 'cypress/not_snapshots', // Overwrite where the Snapshot should be stored | ||
json: false // convert DOM elements into JSON | ||
}) // when storing in the snapshot file | ||
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// will save as | ||
// cypress/not_snapshots/Snapshot-Name.json | ||
``` | ||
You can also pass a "Step Name" to the Function | ||
This Plugin will then save your snapshots as | ||
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```js | ||
cy.get(...).snapshot("Intercepted API Request") | ||
// will save as | ||
// cypress/snapshots/<context>-<describe>-<it>-Intercepted-API-Request.json | ||
// to prevent duplications | ||
``` | ||
```ts | ||
// useFolders: false | ||
cypress/fixtures/my-test__works__foo.json | ||
cypress/fixtures/my-test__works__bar.json | ||
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or both | ||
// useFolders: true | ||
cypress/fixtures/my-test/works/foo.json | ||
cypress/fixtures/my-test/works/bar.json | ||
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```js | ||
cy.get(...).snapshot("Intercepted API Request", { | ||
snapshotPath: "cypress/snapshots/api", | ||
snapshotName: "first_intercept" | ||
}) | ||
// {fixtureFolder}/<Context>-<Describe>-<It>-<Name?>.json | ||
// {fixtureFolder}/<Context>/<Describe>/<It>/<Name?>.json | ||
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// will save as | ||
// cypress/snapshots/api/first_intercept.json | ||
``` | ||
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### Configuration | ||
This module provides some configuration options: | ||
#### snapshot.snapshotPath | ||
Sets the default Path for saving Snapshots (default: `cypress/snapshots`) | ||
![Config Screenshot](./.github/assets/config.png) | ||
#### `ENV` CYPRESS_UPDATE_SNAPSHOTS | ||
Lets you pass a Env Variable to update failing Tests with the new Data | ||
# | ||
### Small print | ||
Authors: | ||
- Joshua <[[email protected]](mailto:[email protected])> | ||
- Gleb Bahmutov <[email protected]> | ||
<br> | ||
License: MIT - do anything with the code, but don't blame us if it does not work. | ||
Support: If you find any problems with this module [open an issue](https://github.com/datashard/snapshot/issues) on Github | ||
Snapshots will generally be saved using this the Convention mentioned in the Comment of the above Codeblock, which is provided by the named Cypress Test Steps. | ||
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## MIT License | ||
Passing a name to the Snapshot function is required, but not checked, if you want to take multiple snapshots in the same block. | ||
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Copyright (c) 2017-2022 Cypress.io <[email protected]> & Joshua <[email protected]> | ||
If you have two or more Snapshots in the same Block, the next one ***WILL*** always overwrite the previous one while updating, causing the First Snapshot in the Block to Fail. | ||
While running your Tests, if a value changed, it will, of course, no longer match the snapshot and throw an Error. | ||
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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: | ||
Which will look like this: | ||
|
||
The above copyright notice and this permission notice shall be | ||
included in all copies or substantial portions of the Software. | ||
![](./.github/assets/Error.png) | ||
|
||
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. | ||
When the Test succeeds, it will instead log a Success in the Log and let you know where the File has been saved to, relative to the Fixture Snapshot Folder | ||
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[npm-icon]: https://nodei.co/npm/@datashard/snapshot.svg?downloads=true | ||
[npm-url]: https://npmjs.org/package/@datashard/snapshot | ||
[semantic-url]: https://github.com/semantic-release/semantic-release | ||
[renovate-badge]: https://img.shields.io/badge/renovate-app-blue.svg | ||
[renovate-app]: https://renovateapp.com/ | ||
![](./.github/assets/Correct.png) |
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const { defineConfig } = require("cypress"); | ||
const { functions } = require("./src/utils"); | ||
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module.exports = defineConfig({ | ||
// fixturesFolder: "cypress/fixtures", | ||
snapshot: { | ||
snapshotPath: "cypress/snapshots/", | ||
// updateSnapshots: true, | ||
useFolders: true, | ||
}, | ||
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e2e: { | ||
setupNodeEvents(on, config) { | ||
functions.tasks(on, config); | ||
// implement node event listeners here | ||
}, | ||
}, | ||
}); | ||
}); |
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/* eslint-env mocha */ | ||
/* global cy */ | ||
describe("@datashard/snapshot", () => { | ||
context("simple types", () => { | ||
it("works with objects", () => { | ||
cy.fixture("File2").snapshot({ | ||
snapshotPath: "cypress/snapshots", | ||
snapshotName: "Objects", | ||
describe("datashard/snapshot", () => { | ||
context("simple types" | ||
// , { env: { updateSnapshots: true } } | ||
, () => { | ||
it("works with objects", () => { | ||
cy.wrap({ | ||
"foo": "bar", | ||
"Fizzy Drink": "Pop" | ||
}).snapshot(); | ||
}); | ||
}); | ||
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it("works with numbers", () => { | ||
cy.wrap(42).snapshot({ | ||
snapshotPath: "cypress/snapshots", | ||
snapshotName: "Numbers", | ||
it("works with numbers", () => { | ||
cy.wrap(42).snapshot({ | ||
snapshotPath: "cypress/fixtures/snapshots", | ||
snapshotName: "Numbers", | ||
}); | ||
}); | ||
}); | ||
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it("works with strings", () => { | ||
cy.wrap("foo-bar").snapshot({ | ||
snapshotPath: "cypress/snapshots", | ||
snapshotName: "Strings", | ||
it("works with strings", () => { | ||
cy.wrap("foo-bar").snapshot({ | ||
snapshotPath: "cypress/fixtures/snapshots", | ||
snapshotName: "Strings", | ||
}); | ||
}); | ||
}); | ||
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it( | ||
"works with arrays", | ||
{ | ||
env: { | ||
SNAPSHOT_UPDATE: true, | ||
it( | ||
"works with arrays", | ||
{ | ||
env: { | ||
updateSnapshots: true, | ||
}, | ||
}, | ||
}, | ||
() => { | ||
cy.wrap([1, 2, 3, 4]).snapshot({ | ||
snapshotPath: "cypress/snapshots", | ||
snapshotName: "Arrays", | ||
}); | ||
} | ||
); | ||
it('works with more "complicated" Objects', () => { | ||
cy.fixture("Complex").snapshot({ | ||
snapshotPath: 'cypress/snapshots', | ||
snapshotName: "Complex" | ||
() => { | ||
cy.wrap([1, 2, 3, 4]).snapshot({ | ||
snapshotPath: "cypress/fixtures/snapshots", | ||
snapshotName: "Arrays", | ||
}); | ||
} | ||
); | ||
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}); | ||
context("complex types" | ||
// , { env: { SNAPSHOT_UPDATE: true } } | ||
, () => { | ||
it('works with more "complicated" Objects', () => { | ||
cy.wrap({ | ||
"status": 200, | ||
"response": { | ||
"array": [0, 1, 2, "4"], | ||
"object": { | ||
"with": "more details" | ||
} | ||
}, | ||
"thisisnew": "wtf" | ||
}).snapshot() | ||
}) | ||
it("works based on fixtures", () => { | ||
cy | ||
.wrap({ | ||
"jsonapi": { | ||
"version": "2.0" | ||
}, | ||
"included": [ | ||
{ | ||
"type": "users", | ||
"id": "2", | ||
"attributes": { | ||
"name": "Test" | ||
} | ||
} | ||
] | ||
}) | ||
.snapshot(); | ||
}); | ||
}) | ||
}); | ||
}); |
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