How to pass login parameters in the artillery.io request - artillery

Question

I have started using 'Artillery.io for load testing. Here how to pass authentication parameters like email, password in the load-test.yml, the below throws 401 an unauthorised error while sending the request. Could someone guide me on how to pass authentication parameters like email and password
config:
target: 'https://test-url.com'
phases:
- duration: 70
arrivalRate: 10
defaults:
headers:
Content-Type: application/json
scenarios:
- flow:
- get:
url: /findAMembership
headers:
Content-Type: application/json
- post:
url: /auth
body: '{"username":"test#test.com", "password": "some_testpassword"}'
headers:
Content-Type: application/json

Answer 1

There are something to do with your script that makes it much easier to read, troubleshoot and maybe solve your problem.
First, about the 401 problem, I think your request does not meet the authentication endpoint requirements. Please check the endpoint. (like how to do the auth in a normal way?)
I assume that the endpoint accepts an json request (username and password) and response a Bearer token, you can try this (use json instead of body, and define the key-value):
- post:
url: "/auth"
json:
username: "test#test.com"
password: "some_testpassword"
headers:
Content-Type: "application/json" # no need this, you have specified the default Content-Type
capture:
json: "$.token"
as: "token" # Should have this, read below
And just a note, you sent an auth request and do not capture anything from it, which makes no sense. Remember to capture the response (like Bearer token, etc.) for chaining requests that need the authentication. Read more

Answer 2

If you want to read the users from file, you can specify a payload path, and it's fields. This also allowed you to test scenarios where you have several users, and/or failed attempts.
config:
target: "<TARGET>"
payload:
- path: "./users.csv"
fields:
- "username"
- "password"
order: sequence
skipHeader: true
- path: "./products.csv"
fields:
- "id"
order: sequence
skipHeader: true
phases:
- duration: 60
arrivalRate: 20
scenarios:
- flow:
- post:
url: "/login"
json:
username: "{{ username }}"
password: "{{ password }}"
This way the username and passwords will be read from the specified CSV- file and POSTed to the <TARGET>/login endpoint with the json body object
{
username: <READ USERNAME>
password: <READ PASSWORD>
}
An example CSV- file may look like
username,password
some1#example.com,super1
email#example.com,secret