215608c4b2
This PR attempts to make the feature.spec and segements.spec test suites more reliable. They have been flaking out a lot recently, and this will hopefully make them less flaky. The way of handling it is a little different for each test suite. ## feature.spec Some of the failures we're seeing for the feature/feauture.spec test suite are due to uncaught resize observer issues (possibly triggered by the banners). We can ignore these errors as they don't impact functionality, only rendering, and are likely to resolve themselves quickly in real-world scenarios. On the other hand, it might also ignore actual errors, so I'm not a 100% on this. Would love some input. However, MDN has some info on [observation errors](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver#observation_errors): > As long as the error event does not fire indefinitely, resize observer will settle and produce a stable, likely correct, layout. However, visitors may see a flash of broken layout, as a sequence of changes expected to happen in a single frame is instead happening over multiple frames. Based on that, I think this is a pretty safe error to ignore. I'm unsure whether catching this exception is only set in the `after` cleanup or whether it pollutes the cy object for all tests, but I think it's fine either way. But if you have ideas, I'd love to hear them. ## segments.spec The issue here appears to be that when we first input the segment's name in the form, it takes a little time for the UI to become ready, so the first characters of the string are cut off. This is a known [issue that the cypress team are aware](https://github.com/cypress-io/cypress/issues/3817), but that isn't likely to get fixed any time soon because no one can give them a reproducible example. You can see the effect of this on segments that haven't been cleaned up in the preview:  To work around it, we add a 500ms wait before we start filling out the form. Yes, adding [waits in your tests is an antipattern](https://docs.cypress.io/guides/references/best-practices#Unnecessary-Waiting), but it's the easiest way around in this case. We *could* investigate and find a way not to need that, but that would likely be a much larger project. This appears to mitigate the issue immediately, so is at least a pretty good temporary fix in my opinion. We also already do this in other tests, so there is a precedent for it. |
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| .. | ||
| cypress | ||
| public | ||
| scripts | ||
| src | ||
| .editorconfig | ||
| .gitignore | ||
| .nvmrc | ||
| check-imports.rc | ||
| cypress.config.ts | ||
| cypress.d.ts | ||
| index.html | ||
| index.js | ||
| orval.config.js | ||
| package.json | ||
| README.md | ||
| tsconfig.json | ||
| tsconfig.node.json | ||
| vercel.json | ||
| vite.config.mts | ||
| yarn.lock | ||
frontend
This directory contains the Unleash Admin UI frontend app.
Run with a local instance of the unleash-api
Refer to the Contributing to Unleash guide for instructions. The frontend dev server runs (in port 3000) simultaneously with the backend dev server (in port 4242):
yarn install
yarn dev
Run with a sandbox instance of the Unleash API
Alternatively, instead of running unleash-api on localhost, you can use a remote instance:
cd ./frontend
yarn install
yarn run start:sandbox
Running end-to-end tests
We have a set of Cypress tests that run on the build before a PR can be merged so it's important that you check these yourself before submitting a PR. On the server the tests will run against the deployed Heroku app so this is what you probably want to test against:
yarn run start:sandbox
In a different shell, you can run the tests themselves:
yarn run e2e:heroku
If you need to test against patches against a local server instance, you'll need to run that, and then run the end to end tests using:
yarn run e2e
You may also need to test that a feature works against the enterprise version of unleash. Assuming the Heroku instance is still running, this can be done by:
yarn run start:enterprise
yarn run e2e
Generating the OpenAPI client
The frontend uses an OpenAPI client generated from the backend's OpenAPI spec. Whenever there are changes to the backend API, the client should be regenerated:
For now we only use generated types (src/openapi/models). We will use methods (src/openapi/apis) for new features soon.
yarn gen:api
rm -rf src/openapi/apis
clean up src/openapi/index.ts imports, only keep first line export * from './models';
This script assumes that you have a running instance of the enterprise backend at http://localhost:4242.
The new OpenAPI client will be generated from the runtime schema of this instance.
The target URL can be changed by setting the UNLEASH_OPENAPI_URL env var.
Analyzing bundle size
npx vite-bundle-visualizer in the root of the frontend directory