community.general/test/integration/targets/tower_job_launch/tasks/main.yml

- name: Launch a Job Template
  tower_job_launch:
    job_template: "Demo Job Template"
    inventory: "Demo Inventory"
    credential: "Demo Credential"
  register: result

- assert:
    that:
      - "result is changed"
      - "result.status == 'pending'"

- name: Check module fails with correct msg
  tower_job_launch:
     job_template: "Non Existing Job Template"
     inventory: "Test Inventory"
     credential: "Test Credential"
  register: result
  ignore_errors: true

- assert:
    that:
      - "result.msg =='Unable to launch job, job_template/Non Existing Job Template was not found: The requested object could not be found.'"