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95 lines
3.5 KiB
Markdown
95 lines
3.5 KiB
Markdown
---
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id: e2e
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title: "End to End testing"
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---
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### Testing the integrity of React components by publishing in a private registry
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> The final stage of a react component is when it is being published and distributed. How can I ensure my packages won’t crash in production? This talk will help you to test your React components by publishing them to a private registry and running End-to-End tests against them.
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<iframe width="300" height="600" src="https://www.youtube.com/embed/bRKZbrlQqLY" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
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- [Slides](https://docs.google.com/presentation/d/1a2xkqj1KlUayR1Bva1bVYvavwOPVuLplxFtup9MI_U4/edit?usp=sharing)
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- [Demo](https://github.com/juanpicado/verdaccio-end-to-end-tests)
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## End to End and Verdaccio
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Some projects organize packages in multi-packages repositories or [monorepos](https://github.com/babel/babel/blob/master/doc/design/monorepo.md). End to End testing is a topic that usually is only relevant for User Interfaces, but from a Node.js perspective, **publishing packages also need to be tested**.
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Such approach has been really hard to achieve considering:
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* Populate canary packages on public services seems not to be a good idea
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* Some self-hosted OSS registries are too heavy
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* Offline environments (private networks)
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**Verdaccio** is a lightweight registry with zero-configuration that **fits perfectly in any E2E + CI workflow**.
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## Implementation {#implementation}
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There is no a silver bullet yet, each implementation seems to be specific for each project, you can check some of them in
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the following thread [clicking here](https://stackoverflow.com/a/50222427/308341).
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## Examples in Open Source
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The following projects have examples using Verdaccio in Open Source
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### Bash Examples
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* [Babel.js](https://github.com/babel/babel) *(+35k ⭐️)*
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* [create-react-app](https://github.com/facebook/create-react-app/blob/master/CONTRIBUTING.md#contributing-to-e2e-end-to-end-tests) *(+73.5k ⭐️)*
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* [Uppy](https://github.com/transloadit/uppy) *(+21k ⭐️)*
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* [ethereum/web3.js](https://github.com/ethereum/web3.js) *(+8k ⭐️)*
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* [Mozilla Neutrino](https://github.com/neutrinojs/neutrino) *(+3k ⭐️)*
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This is the most simple example using Verdaccio in a bash script (extracted from *create-react-app*).
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```bash
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#!/bin/sh
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set -e
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local_registry="http://0.0.0.0:4873"
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# start local registry
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tmp_registry_log=`mktemp`
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sh -c "mkdir -p $HOME/.config/verdaccio"
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sh -c "cp --verbose /config.yaml $HOME/.config/verdaccio/config.yaml"
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sh -c "nohup verdaccio --config $HOME/.config/verdaccio/config.yaml &>$tmp_registry_log &"
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# wait for `verdaccio` to boot
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grep -q 'http address' <(tail -f $tmp_registry_log)
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# login so we can publish packages
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sh -c "npm-auth-to-token -u test -p test -e test@test.com -r $local_registry"
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# Run nmp command
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sh -c "npm --registry $local_registry publish"
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```
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### Docker Examples
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* [Hyperledger](https://github.com/hyperledger/fabric-chaincode-node)
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### Programtically Examples
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* [Storybook](https://github.com/storybooks/storybook) *(+44k ⭐️)*
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* [Gatsby](https://github.com/gatsbyjs/gatsby) *(+40k ⭐️)
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#### Verdaccio module
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Via CLI:
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* [Aurelia Framework](https://github.com/aurelia) *(+12k ⭐️)*
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* [Embark](https://embark.status.im/) *(+3k ⭐️)*
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#### Node.js `child_process` examples
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* [Angular CLI](https://github.com/angular/angular-cli) *(+25k ⭐️)*
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* [bit](https://github.com/teambit/bit) *(+6k ⭐️)*
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* [pnpm](https://github.com/pnpm/pnpm) *(+6k ⭐️)*
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