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mostlymatter/e2e-tests/README.md
Mario Vitale 1e121eb7f3 CLD-6297 - E2E tests improvements (#24541)
* Improve e2etests readme, remove unused apt install
* Add testing E2E Tests MultiOS
* Get rid of deprecation warning
* Smart selection of docker network driver for different OSes
* Unify makefile invocation for windows as well
* Tune JVM for ES and Keycloak
* fix: Made required changes to run locally on arm MacOS
* fix: FIxed network command and removed dashboard node user as it is not needed
* fix: make dashboard work for Mac
* Make runs without dashboard work again, make BROWSE tunable and document it

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Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: Antonis Stamatiou <stamatiou.antonis@gmail.com>
2023-09-25 17:01:01 +02:00

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# E2E testing for the Mattermost web client
This directory contains the E2E testing code for the Mattermost web client.
### How to run locally
##### For test case development
Please refer to the [dedicated developer documentation](https://developers.mattermost.com/contribute/more-info/webapp/e2e-testing/) for instructions.
##### For pipeline debugging
The E2E testing pipeline's scripts depend on the following tools being installed on your system: `docker`, `docker-compose`, `make`, `git`, `jq`, and some common utilities (`coreutils`, `findutils`, `bash`, `awk`, `sed`, `grep`)
Instructions, tl;dr: create a local branch with your E2E test changes, then open a PR to the `mattermost-server` repo targeting the `master` branch (so that CI will produce the image that docker-compose needs), then run `make` in this directory.
Instructions, detailed:
1. (optional, undefined variables are set to sane defaults) Create the `.ci/env` file, and populate it with the variables you need out of the following list:
* The following variables will be passed over to the server container: `MM_LICENSE` (no enterprise features will be available if this is unset), and the exploded `MM_ENV` (a comma-separated list of env var specifications)
* The following variables will be passed over to the cypress container: `BRANCH`, `BUILD_ID`, `CI_BASE_URL`, `BROWSER`, `AUTOMATION_DASHBOARD_URL` and `AUTOMATION_DASHBOARD_TOKEN`
* The `SERVER_IMAGE` variable can also be set, if you want to select a custom mattermost-server image. If not specified, the value of the `SERVER_IMAGE_DEFAULT` variable defined in file `.ci/.e2erc` is used.
* The `TEST_FILTER` variable can also be set, to customize which tests you want cypress to run. If not specified, only the smoke tests will run. Please check the `e2e-tests/cypress/run_tests.js` file for details about its format.
2. (optional) `make start-dashboard`: start the automation-dashboard in the background
* This also sets the `AUTOMATION_DASHBOARD_URL` and `AUTOMATION_DASHBOARD_TOKEN` variables for the cypress container
* Note that if you run the dashboard locally, but also specify other `AUTOMATION_DASHBOARD_*` variables in your `.ci/env` file, the latter variables will take precedence
3. `make`: start and prepare the server, then run the cypress tests
* You can track the progress of the run in the `http://localhost:4000/cycles` dashboard, if you launched it locally
4. `make stop`: tears down the server (and the dashboard, if running), then cleans up the env placeholder files
Notes:
- Setting a variable in `.ci/env` is functionally equivalent to exporting variables in your current shell's environment, before invoking the makefile.
- The `.ci/.env.*` files are auto generated by the pipeline scripts, and aren't meant to be modified manually. The only file you should edit to control the containers' environment is `.ci/env`, as specified in the instructions above.
- Aside from some exceptions (e.g. `TEST_FILTER`), most of the variables in `.ci/env` must be set before the `make start-server` command is run. Modifying that file afterwards has no effect, because the containers' env files are generated in that step.
- If you restart the dashboard at any point, you must also restart the server containers, so that it picks up the new IP of the dashboard from the newly generated `.env.dashboard` file
- If you started the dashboard locally in the past, but want to point to another dashboard later, you can run `make clean-env-placeholders` to remove references to the local dashboard (you'll likely need to restart the server)
- If new variables need to be passed to any of the containers:
* If their value is fixed (e.g. a static server configuration): these may be simply added to the `.ci/server.override.yml` file, to the appropriate container.
* If you need to introduce variables that you want to control from `.ci/env`: you need to update the scripts under the `.ci/` dir, and configure them to write the new variables' values over to the appropriate `.env.*` file. In particular, avoid defining variables that depend on other variables within the docker-compose override files: this is to ensure uniformity in their availability, and simplifies the question of what container has access to which variable considerably.