Ansible Assert on json_query - json

Question

I am trying to run an assert in ansible on a result returned from a json_query. However, even though the returned value looks like my assert, the assert fails. Here's the assert:
- name: Assert environment variables
assert:
that:
- Job | json_query(jmesquery) == "00"
vars:
jmesquery: "resources[0].spec.template.spec.containers[0].env[?name=='MY_VARIABLE'].value"
A debug run on the same query returns:
- name: Test1
debug: msg="{{ Job | json_query(jmesquery) }}"
vars:
jmesquery: "resources[0].spec.template.spec.containers[0].env[?name=='MY_VARIABLE'].value"
TASK [Test1] *******************************************************************
ok: [localhost] => {
"msg": [
"00"
]
}
So why on earth is that assert failing?

Answer 1

Your debug message show it: your result is a list with one element, "00", so your assert should be:
- name: Assert environment variables
assert:
that:
- Job | json_query(jmesquery) == ["00"]
vars:
jmesquery: "resources[0].spec.template.spec.containers[0].env[?name=='MY_VARIABLE'].value"
For the record, here is the debug of a list like yours:
- hosts: localhost
gather_facts: no
tasks:
- debug:
msg: ["00"]
Gives:
TASK [debug] *******************************************************************
ok: [localhost] => {
"msg": [
"00"
]
}
And this is the debug of a simple string, like the assert, like you wrote it, is expecting:
- hosts: localhost
gather_facts: no
tasks:
- debug:
msg: "00"
Gives
TASK [debug] *******************************************************************
ok: [localhost] => {
"msg": "00"
}