chore: init load tests (#7635)

* init load tests

* add machine pat

* setup app

* add introspect

* use xk6-modules repo

* logging

* add teardown

* add manipulate user

* add manipulate user

* remove logs

* convert tests to ts

* add readme

* zitadel

* review comments

load-test/README.md

@@ -0,0 +1,46 @@
+# Load Tests
+
+This package contains code for load testing specific endpoints of ZITADEL using [k6](https://k6.io).
+
+## Prerequisite
+
+* [npm](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm)
+* [k6](https://k6.io/docs/get-started/installation/)
+* [go](https://go.dev/doc/install)
+* running ZITADEL
+
+## Structure
+
+The use cases under tests are defined in `src/use_cases`. The implementation of ZITADEL resources and calls are located under `src`.
+
+## Execution
+
+### Env vars
+
+- `VUS`: Amount of parallel processes execute the test (default is 20)
+- `DURATION`: Defines how long the tests are executed (default is `200s`)
+- `ZITADEL_HOST`: URL of ZITADEL (default is `http://localhost:8080`)
+
+To setup the tests we use the credentials of console and log in using an admin. The user must be able to create organizations and all resources inside organizations.
+
+- `ADMIN_LOGIN_NAME`: `zitadel-admin@zitadel.localhost`
+- `ADMIN_PASSWORD`: `Password1!`
+
+### Test
+
+Before you run the tests you need an initialized user. The tests don't implement the change password screen during login.
+
+* `make human_password_login`  
+  setup: creates human users  
+  test: uses the previously created humans to sign in using the login ui
+* `make machine_pat_login`  
+  setup: creates machines and a pat for each machine  
+  test: calls user info endpoint with the given pats
+* `make user_info`  
+  setup: creates human users and signs them in  
+  test: calls user info endpoint using the given humans
+* `make manipulate_user`  
+  test: creates a human, updates its profile, locks the user and then deletes it 
+* `make introspect`  
+  setup: creates projects, one api per project, one key per api and generates the jwt from the given keys  
+  test: calls introspection endpoint using the given JWTs