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22
LICENSE Normal file
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@ -0,0 +1,22 @@
Copyright (c) 2023-2024 Joshua <data@shard.wtf>
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.

171
README.md
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@ -1,53 +1,46 @@
# @datashard/snapshot
> Adds value / object / DOM element snapshot testing support to Cypress test runner
> Adds support for Value, Object, and Dom Element Snapshot Testing 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.
Unlike `@cypress/snapshot`, this saves snapshots in their own files with a sensible default and strives to have ongoing Support for future Cypress Versions
</details>
<!-- [![NPM][npm-icon] ][npm-url] -->
## Breaking Changes
> [!WARNING]
The `readFileMaybe` task was required in previous Versions, this has been changed so this Module now uses the `cy.fixture` Command to get the contents of existing files. This means that this module will only be able to write new tests if `updateSnapshots` (previously `SNAPSHOT_UPDATE`) is set to true through Environment Variables or through the Cypress config.
\
This also means, that previous tests will likely be broken, *please make sure that your tests pass before updating to the latest version of this module*
## Install
Requires [Node](https://nodejs.org/en/) version 10 or above.
Requires Node 16 or above
```sh
npm install --save-dev @datashard/snapshot
npm i --save-dev @datashard/snapshot
```
## Import
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
> by default this will be `cypress/support/e2e.js`
```js
require("@datashard/snapshot").register();
require('@datashard/snapshot').regsiter()
```
This registers a new command to create new snapshot or compare value to old snapshot
This will register a new Command `.snapshot()`, to create new Snapshots and once created, to compare their Values.
and add the following to your `cypress.config.{js,ts}`
## Config
You can pass `updateSnapshots` and `useFolders` as options in the `cypress.config.js` file
```js
e2e: {
setupNodeEvents(on, config) {
require("@datashard/snapshot").tasks(on, config)
},
```
<!-- ![Example Settings for the Module](./.github/assets/config.png) -->
> **Note** \
> \
> `@datashard/snapshot` **requires** the `readFileMaybe` plugin to be included, which can be easily done using the code above
Alternatively, you can also add `snapshotUpdate` as an Environment Variable to update your snapshots.
# Usage
Simply pass `--env updateSnapshots=true` when running Cypress.
Currently, if you want to take more than one snapshot, you need to pass a Step Name to prevent overwrites / test failures
> If you don't use the default fixture folder, you will also need to add `snapshotPath` to this module's config with the same path you use for `fixtureFolder`.
## Usage
If properly added, usage of this plugin is rather simple, simply add `.snapshot()` to cypress functions that return valid JSON.
### Example
```js
describe("my tests", () => {
it("works", () => {
@ -59,113 +52,27 @@ describe("my tests", () => {
});
```
In the above case, you can find the stored snapshot in their own files, mentioned above them
Depending on your settings, this module will then save your snapshots as
```ts
// useFolders: false
cypress/fixtures/snapshots/my-tests__works__foo.json
cypress/fixtures/snapshots/my-tests__works__bar.json
// useFolders: true
cypress/fixtures/snapshots/my-tests/works/foo.json
cypress/fixtures/snapshots/my-tests/works/bar.json
```jsonc
// cypress/fixtures/snapshots/my-tests-works-foo.json
{ "foo": 42 }
// cypress/fixtures/snapshots/my-tests-works-bar.json
{ "bar": 101 }
```
If you change the site values, the saved snapshot will no longer match, throwing an error
Snapshots will generally be saved using this convention, provided by Cypress:
(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/fixtures/not_snapshots', // Overwrite where the Snapshot should be stored
json: false // convert DOM elements into JSON
}) // when storing in the snapshot file
// will save as
// cypress/not_snapshots/Snapshot-Name.json
```
{fixtureFolder}/<Context>-<Describe>-<It>-<Name?>.json
{fixtureFolder}/<Context>/<Describe>/<It>/<Name?>.json
```
You can also pass a "Step Name" to the Function
If a step wasn't named, it will instead use the `<It>`for the file name, though this means that you will not be able to have more than 1 Snapshot in your It Block, as it would overwrite the previously created Snapshot files.
```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:
#### 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 &lt;[data@shard.wtf](mailto:data@shard.wtf)&gt;
- Gleb Bahmutov &lt;gleb@cypress.io&gt;
<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
## MIT License
Copyright (c) 2017-2022 Cypress.io &lt;hello@cypress.io&gt; & Joshua &lt;data@shard.wtf&gt;
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.
[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/
Of course, if a value changed, it will no longer match the snapshot and throw an Error.
![](./.github/assets/Error.png)

4
cypress.config.js
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@ -3,7 +3,7 @@ const { defineConfig } = require("cypress");
module.exports = defineConfig({
snapshot: {
updateSnapshots: true,
// updateSnapshots: true,
useFolders: true,
},
@ -12,4 +12,4 @@ module.exports = defineConfig({
// implement node event listeners here
},
},
});
});

10
cypress/e2e/1.cy.js
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@ -48,13 +48,13 @@ describe("datashard/snapshot", () => {
cy.wrap({
"status": 200,
"response": {
"array": [0, 1, 2, "Three"],
"array": [0, 1, 2, "4"],
"object": {
"with": "more details"
// "with": "more details"
}
}
}
).snapshot()
},
"thisisnew": "wtf"
}).snapshot()
})
it("works based on fixtures", () => {
cy

10
cypress/e2e/2.cy.js
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@ -3,25 +3,21 @@
describe("Random Describe", () => {
context("Random Context", () => {
it("Random It", () => {
cy.fixture("File").snapshot("Fixture File", {
snapshotName: "Random Fixture File"
});
// cy.fixture("File2").snapshot("Fixture File",
cy.wrap(42).snapshot("Numbers");
cy.wrap("foo-bar").snapshot("Strings");
cy.wrap([1, 2, 3]).snapshot("Arrays");
});
// it("works with numbers", () => {
// console.log(cy.wrap(42))
// cy.wrap(42).snapshot();
// });
// it("works with strings", () => {
// console.log(cy.wrap("foo-bar"))
// cy.wrap("foo-bar").snapshot();
// });
// it("works with arrays", () => {
// console.log(cy.wrap([1, 2, 3]))
// cy.wrap([1, 2, 3]).snapshot();
// });
});
});

7
cypress/fixtures/snapshots/Random-Describe/Random-Context/Random-It/Arrays.json Normal file
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@ -0,0 +1,7 @@
{
"data": [
1,
2,
3
]
}

3
cypress/fixtures/snapshots/Random-Describe/Random-Context/Random-It/Numbers.json Normal file
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@ -0,0 +1,3 @@
{
"data": 42
}

3
cypress/fixtures/snapshots/Random-Describe/Random-Context/Random-It/Strings.json Normal file
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@ -0,0 +1,3 @@
{
"data": "foo-bar"
}

9
cypress/fixtures/snapshots/datashard-snapshot/complex-types/works-with-more-complicated-Objects.json
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@ -5,10 +5,9 @@
0,
1,
2,
"Three"
"4"
],
"object": {
"with": "more details"
}
}
"object": {}
},
"thisisnew": "wtf"
}

14
cypress/fixtures/snapshots/datashard-snapshot/simple-types/works-based-on-fixtures.json
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@ -1,14 +0,0 @@
{
"jsonapi": {
"version": "2.0"
},
"included": [
{
"type": "users",
"id": "2",
"attributes": {
"name": "Test"
}
}
]
}

14
cypress/fixtures/snapshots/datashard-snapshot/simple-types/works-with-more-complicated-Objects.json
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@ -1,14 +0,0 @@
{
"status": 200,
"response": {
"array": [
0,
1,
2,
"Three"
],
"object": {
"with": "more details"
}
}
}

2
package.json
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@ -33,7 +33,7 @@
"unused-deps": "dependency-check --unused --no-dev . --entry src/index.js",
"semantic-release": "semantic-release",
"cypress:open": "cypress open",
"cypress:update": "cypress run --env SNAPSHOT_UPDATE=true",
"cypress:update": "cypress run --env updateSnapshots=true",
"cypress:run": "cypress run"
},
"devDependencies": {

20
src/snapshot.js
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@ -11,10 +11,16 @@ const pickSerializer = (asJson, value) => {
return identity;
};
/**
*
* @param {string} text
* @returns {string}
*/
const parseTextToJSON = (text) => text.replace(/\| [✅➖➕⭕]/g, "").trim().replace(/(.*?),\s*(\}|])/g, "$1$2").replace(/},(?!")$/g, "}");
const store_snapshot = (props = { value, name, raiser }) => {
if (Cypress.env().updateSnapshots || Cypress.config('snapshot').updateSnapshots) {
cy.log(props.name)
console.log(props.name)
cy.writeFile(`${props.name}.json`, JSON.stringify(props.value, null, 2))
} else {
// TODO: Figure out how to replace the fixture folder name if people move it
@ -39,6 +45,7 @@ const set_snapshot = ({ snapshotName, serialized, value }) => {
const raiser = ({ value, expected }) => {
const result = compareValues({ expected, value });
// console.log("Final Result", result.result)
if ((!Cypress.env().updateSnapshots || !Cypress.config('snapshot').updateSnapshots) && !result.success) {
devToolsLog = {
...devToolsLog,
@ -49,10 +56,13 @@ const set_snapshot = ({ snapshotName, serialized, value }) => {
throw new Error(
`Snapshot Difference found.\nPlease Update the Snapshot\n
${JSON.stringify(result.result.replaceAll(/[╺┿╳]/g, ""), null, 2)}`
);
${JSON.stringify(
JSON.parse(parseTextToJSON(result.result).replaceAll(/[╺┿╳]/g, "")), null, 2)
.replaceAll(" ", "&nbsp;")
}
`);
}
};
Cypress.log(options);

55
src/utils/compareValues.js
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@ -1,52 +1,20 @@
const isNestedData = (expected, value) => {
return (
expected && value && typeof expected == `object` && typeof value == `object`
);
};
const containsDiffChars = str => ["╺", "┿", "╳"].some(emoji => str.includes(emoji));
const isNestedData = (expected, value) => expected && value && typeof expected == 'object' && typeof value == 'object';
const checkDataState = (expected, value) => {
let result;
if (expected === value) {
result = `| ✅ "${value}",`;
} else if (expected == undefined) {
result = `| ➖ "➖╺ ${JSON.stringify(expected)?.replaceAll('"', "'")}|${value?.replaceAll('"', "'")}",`;
} else if (value == undefined) {
result = `| ➕ "➕┿ ${JSON.stringify(expected)?.replaceAll('"', "'")}|${value?.replaceAll('"', "'")}",`;
} else {
result = `| ⭕ "⭕╳ ${JSON.stringify(expected)?.replaceAll('"', "'")}|${value?.replaceAll('"', "'")}",`;
result = `| ⭕ "⭕╳ ${JSON.stringify(expected)?.replaceAll('"', "'")} | ${value?.replaceAll('"', "'")}",`;
}
return result;
};
/**
*
* @param {string} text
* @returns {string}
*/
function parseTextToJSON(text) {
const lines =
// JSON.stringify(
text
.replace(/\| [✅➖➕⭕]/g, "").trim()
.replace(/(.*?),\s*(\}|])/g, "$1$2")
// )
return lines;
// return JSON.stringify(lines, null, 2);
}
function containsDiffChars(str) {
const emojis = ["╺", "┿", "╳"];
return emojis.some(emoji => str.includes(emoji));
}
const compare = (expected, value) => {
if(value === undefined){
throw new Error("Please provide Data to compare against.")
}
let compareResult = "";
if (isNestedData(expected, value)) {
@ -62,6 +30,9 @@ const compare = (expected, value) => {
dataY = expected;
}
console.log('datax', dataX)
console.log('dataY', dataY)
dataX.forEach(function (item, index) {
const resultset = compare(item, dataY[index]);
compareResult += resultset.result;
@ -87,18 +58,14 @@ const compare = (expected, value) => {
} else {
compareResult = checkDataState(expected, value);
}
let result = parseTextToJSON(compareResult).replace(/(},)$/g, `}`);
console.log("compareResult",compareResult)
console.log("result", result.replace(/(},)$/g, `}`))
// let result = compareResult;
try {
return {
success: !containsDiffChars(result),
result,
success: !containsDiffChars(compareResult),
result: compareResult,
};
} catch (error) {
return { success: false, result };
return { success: false, result: compareResult };
}
};