Summary

Builds on @chrismeyersfsu's test from #16488 (credential association fix + simple file injection test) and adds a test case for cross-referencing between file templates.

What this tests

A credential type where one file template references another injected file's path:

file:
  template.key_file: '{{ key_data }}'
  template.config_file: |
    [DEFAULT]
    user={{ user_id }}
    key_file={{ tower.filename.key_file }}
env:
  KEY_FILE: '{{ tower.filename.key_file }}'
  CONFIG_FILE: '{{ tower.filename.config_file }}'

This is the pattern used by OCI and similar credential types — a config file that needs to contain the path to a key file. This is the pattern reported broken in AAP-78106.

Why this fails without the awx_plugins.interfaces fix

When inject_credential was moved to awx_plugins.interfaces (38f76f0f), the file injection loop was refactored to set tower.filename after the loop instead of incrementally inside it. This means {{ tower.filename.key_file }} is None when config_file is rendered, producing key_file= (blank) in the config file content.

Fix: ansible/awx_plugins.interfaces#42

Depends on

• Add integration test for custom credential file injection #16488 — credentials parameter for run_job_from_playbook fixture
• Fix custom credential file injectors awx_plugins.interfaces#42 — incremental tower.filename assignment fix

Test plan

• test_custom_credential_type_file_injection — simple file injection (from Add integration test for custom credential file injection #16488)
• test_custom_credential_type_file_cross_reference — config file references key file path (new)

Summary by CodeRabbit

• Tests
  • Added playbook-based tests that validate custom credential file injection, confirm injected files' decoded contents, and ensure environment variables point to rendered files.
  • Added cross-reference playbook tests verifying referenced file paths and contents across injected templates.
  • Updated test helper to allow supplying credentials when running jobs.