mirror of
https://github.com/datashard/snapshot.git
synced 2024-11-24 06:42:29 +00:00
updated readme
This commit is contained in:
Joshua
parent
c9be09dc48
commit
fc42087ced
2 changed files with 76 additions and 80 deletions
BIN
.github/assets/updated-mismatch.png
vendored
Normal file
BIN
.github/assets/updated-mismatch.png
vendored
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 41 KiB |
154
README.md
154
README.md
|
|
@ -8,90 +8,70 @@
|
|||
[![semantic-release][semantic-image] ][semantic-url]
|
||||
[![renovate-app badge][renovate-badge]][renovate-app]
|
||||
|
||||
## Note
|
||||
|
||||
Please take a look at a few other Cypress snapshot plugins: [cypress-plugin-snapshots](https://github.com/meinaart/cypress-plugin-snapshots), [cypress-image-snapshot](https://github.com/palmerhq/cypress-image-snapshot).
|
||||
> **Note** \
|
||||
> \
|
||||
> Please take a look at a few other Cypress snapshot plugins:
|
||||
>
|
||||
> - [cypress-plugin-snapshots](https://github.com/meinaart/cypress-plugin-snapshots)
|
||||
> - [cypress-image-snapshot](https://github.com/palmerhq/cypress-image-snapshot).
|
||||
|
||||
## Install
|
||||
|
||||
Requires [Node](https://nodejs.org/en/) version 6 or above.
|
||||
Requires [Node](https://nodejs.org/en/) version 10 or above.
|
||||
|
||||
```sh
|
||||
npm install --save-dev @cypress/snapshot
|
||||
```
|
||||
|
||||
## Use
|
||||
## Import
|
||||
|
||||
After installing, add the following to your `cypress/support/commands.js` file
|
||||
|
||||
```js
|
||||
require('@cypress/snapshot').register()
|
||||
require("@cypress/snapshot").register();
|
||||
```
|
||||
|
||||
This registers a new command to create new snapshot or compare value to old snapshot
|
||||
|
||||
```js
|
||||
describe('my tests', () => {
|
||||
it('works', () => {
|
||||
cy.log('first snapshot')
|
||||
cy.wrap({ foo: 42 }).snapshot()
|
||||
cy.log('second snapshot')
|
||||
cy.wrap({ bar: 101 }).snapshot()
|
||||
})
|
||||
})
|
||||
and add the following to your `cypress.config.js`
|
||||
|
||||
describe('focused input field', () => {
|
||||
it('is empty and then typed into', () => {
|
||||
cy.visit('http://todomvc.com/examples/react/')
|
||||
cy
|
||||
.focused()
|
||||
.snapshot('initial')
|
||||
.type('eat healthy breakfast')
|
||||
.snapshot('after typing')
|
||||
})
|
||||
})
|
||||
```js
|
||||
e2e: {
|
||||
setupNodeEvents(on, config) {
|
||||
require("@cypress/snapshot").tasks(on, config)
|
||||
},
|
||||
```
|
||||
|
||||
By default, the snapshot object can be found in file `snapshots.js`. In the above case it would look something like this
|
||||
**Note:** `@cypress/snapshot` **requires** the `readFileMaybe` plugin to be included, which can be easily done using the code above
|
||||
|
||||
|
||||
# Usage
|
||||
|
||||
Currently, if you want to take more than one snapshot, you need to pass a Step Name to prevent overwrites / test failures
|
||||
|
||||
```js
|
||||
module.exports = {
|
||||
"focused input field": {
|
||||
"is empty and then typed into": {
|
||||
"initial": {
|
||||
"tagName": "input",
|
||||
"attributes": {
|
||||
"class": "new-todo",
|
||||
"placeholder": "What needs to be done?",
|
||||
"value": ""
|
||||
}
|
||||
},
|
||||
"after typing": {
|
||||
"tagName": "input",
|
||||
"attributes": {
|
||||
"class": "new-todo",
|
||||
"placeholder": "What needs to be done?",
|
||||
"value": "eat healthy breakfast"
|
||||
}
|
||||
}
|
||||
}
|
||||
},
|
||||
"my tests": {
|
||||
"works": {
|
||||
"1": {
|
||||
"foo": 42
|
||||
},
|
||||
"2": {
|
||||
"bar": 101
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
describe("my tests", () => {
|
||||
it("works", () => {
|
||||
cy.log("first snapshot");
|
||||
cy.wrap({ foo: 42 }).snapshot("foo");
|
||||
cy.log("second snapshot");
|
||||
cy.wrap({ bar: 101 }).snapshot("bar");
|
||||
});
|
||||
});
|
||||
```
|
||||
|
||||
In the above case, you can find the stored snapshot in their own files, mentioned above them
|
||||
|
||||
```json
|
||||
// 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`)
|
||||
|
||||
|
||||
Click on the `SNAPSHOT` step in the Command Log to see expected and current value printed in the DevTools.
|
||||
|
||||
|
|
@ -101,45 +81,61 @@ You can control snapshot comparison and behavior through a few options.
|
|||
|
||||
```js
|
||||
cy.get(...).snapshot({
|
||||
name: 'human snapshot name', // to use in the snapshot file
|
||||
snapshotName: 'Snapshot Name', // to use as a File Name
|
||||
snapshotPath: 'cypress/not_snapshots', // where to save the Snapshot
|
||||
json: false // convert DOM elements into JSON
|
||||
// when storing in the snapshot file
|
||||
}) // when storing in the snapshot file
|
||||
|
||||
// will save as
|
||||
// cypress/not_snapshots/Snapshot-Name.json
|
||||
```
|
||||
|
||||
You can also pass a "Step Name" to the Function
|
||||
|
||||
```js
|
||||
cy.get(...).snapshot("Intercepted API Request")
|
||||
// will save as
|
||||
// cypress/snapshots/<context>-<describe>-<it>-Intercepted-API-Request.json
|
||||
// to prevent duplications
|
||||
```
|
||||
|
||||
or both
|
||||
|
||||
```js
|
||||
cy.get(...).snapshot("Intercepted API Request", {
|
||||
snapshotPath: "cypress/snapshots/api",
|
||||
snapshotName: "first_intercept"
|
||||
})
|
||||
|
||||
// will save as
|
||||
// cypress/snapshots/api/first_intercept.json
|
||||
```
|
||||
|
||||
### Configuration
|
||||
|
||||
This module provides some configuration options:
|
||||
|
||||
#### useRelativeSnapshots
|
||||
Set to true in order to store your snapshots for each test run next to the inital test caller rather
|
||||
than at the base working directory.
|
||||
|
||||
**Note:** requires the `readFileMaybe` plugin to be configured see https://on.cypress.io/task#Read-a-file-that-might-not-exist
|
||||
|
||||
#### snapshotFileName
|
||||
Set to a string to name your snapshot something other than 'snapshots.js'
|
||||
|
||||
#### Usage
|
||||
Set the configuration options as part of the Cypress config.
|
||||
See https://docs.cypress.io/guides/references/configuration.html
|
||||
#### snapshotPath
|
||||
Sets the default Path for saving Snapshots (default: `cypress/snapshots`)
|
||||
|
||||
## Debugging
|
||||
|
||||
To debug this module run with environment variable `DEBUG=@cypress/snapshot`
|
||||
|
||||
#
|
||||
|
||||
### Small print
|
||||
|
||||
Author: Gleb Bahmutov <gleb@cypress.io> © Cypress.io 2017
|
||||
Author: Gleb Bahmutov <gleb@cypress.io> & Joshua D. <[cypress@lio.cat](mailto:cypress@lio.cat)> © Cypress.io 2017-2022
|
||||
<br>
|
||||
License: MIT - do anything with the code, but don't blame us if it does not work.
|
||||
|
||||
License: MIT - do anything with the code, but don't blame u if it does not work.
|
||||
|
||||
Support: if you find any problems with this module, email / tweet /
|
||||
Support: If you find any problems with this module, email / tweet /
|
||||
[open issue](https://github.com/cypress-io/snapshot/issues) on Github
|
||||
|
||||
## MIT License
|
||||
|
||||
Copyright (c) 2017 Cypress.io <gleb@cypress.io>
|
||||
Copyright (c) 2017-2022 Cypress.io <hello@cypress.io>
|
||||
|
||||
Permission is hereby granted, free of charge, to any person
|
||||
obtaining a copy of this software and associated documentation
|
||||
|
|
|
|||
Loading…
Reference in a new issue