ansible/test/integration/targets/interpreter_discovery_python/tasks/main.yml

- name: ensure we can override ansible_python_interpreter
  vars:
    ansible_python_interpreter: overriddenpython
  assert:
    that:
    - ansible_python_interpreter == 'overriddenpython'
    fail_msg: "'ansible_python_interpreter' appears to be set at a high precedence to {{ ansible_python_interpreter }},
              which breaks this test."

- name: snag some facts to validate for later
  set_fact:
    distro: '{{ ansible_distribution | default("unknown") | lower }}'
    distro_version: '{{ ansible_distribution_version | default("unknown") }}'
    os_family: '{{ ansible_os_family | default("unknown") }}'

- name: test that python discovery is working and that fact persistence makes it only run once
  block:
  - name: clear facts to force interpreter discovery to run
    meta: clear_facts

  - name: trigger discovery with auto
    vars:
      ansible_python_interpreter: auto
    ping:
    register: auto_out

  - name: get the interpreter being used on the target to execute modules
    vars:
      # keep this set so we can verify we didn't repeat discovery
      ansible_python_interpreter: auto
    test_echo_module:
    register: echoout

  - when: distro == 'macosx'
    block:
      - name: Get the sys.executable for the macos discovered interpreter, as it may be different than the actual path
        raw: '{{ auto_out.ansible_facts.discovered_interpreter_python }} -c "import sys; print(sys.executable)"'
        register: discovered_sys_executable

      - set_fact:
          normalized_discovered_interpreter: '{{ discovered_sys_executable.stdout_lines[0] }}'

  - set_fact:
      normalized_discovered_interpreter: '{{ auto_out.ansible_facts.discovered_interpreter_python }}'
    when: distro != 'macosx'

  - assert:
      that:
      - auto_out.ansible_facts.discovered_interpreter_python is defined
      - echoout.running_python_interpreter == normalized_discovered_interpreter
      # verify that discovery didn't run again (if it did, we'd have the fact in the result)
      - echoout.ansible_facts is not defined or echoout.ansible_facts.discovered_interpreter_python is not defined


- name: test that auto_legacy gives a dep warning when /usr/bin/python present but != auto result
  block:
  - name: clear facts to force interpreter discovery to run
    meta: clear_facts

  - name: trigger discovery with auto_legacy
    vars:
      ansible_python_interpreter: auto_legacy
    ping:
    register: legacy

  - name: check for dep warning (only on platforms where auto result is not /usr/bin/python and legacy is)
    assert:
      that:
      - legacy.deprecations | default([]) | length > 0
    # only check for a dep warning if legacy returned /usr/bin/python and auto didn't
    when: legacy.ansible_facts.discovered_interpreter_python == '/usr/bin/python' and
          auto_out.ansible_facts.discovered_interpreter_python != '/usr/bin/python'


- name: test that auto_silent never warns and got the same answer as auto
  block:
  - name: clear facts to force interpreter discovery to run
    meta: clear_facts

  - name: initial task to trigger discovery
    vars:
      ansible_python_interpreter: auto_silent
    ping:
    register: auto_silent_out

  - assert:
      that:
      - auto_silent_out.warnings is not defined
      - auto_silent_out.ansible_facts.discovered_interpreter_python == auto_out.ansible_facts.discovered_interpreter_python


- name: test that auto_legacy_silent never warns and got the same answer as auto_legacy
  block:
  - name: clear facts to force interpreter discovery to run
    meta: clear_facts

  - name: trigger discovery with auto_legacy_silent
    vars:
      ansible_python_interpreter: auto_legacy_silent
    ping:
    register: legacy_silent

  - assert:
      that:
        - legacy_silent.warnings is not defined
        - legacy_silent.ansible_facts.discovered_interpreter_python == legacy.ansible_facts.discovered_interpreter_python

- name: ensure modules can't set discovered_interpreter_X or ansible_X_interpreter
  block:
  - test_echo_module:
      facts:
        ansible_discovered_interpreter_bogus: from module
        discovered_interpreter_bogus: from_module
        ansible_bogus_interpreter: from_module
        test_fact: from_module
    register: echoout

  - assert:
      that:
      - test_fact == 'from_module'
      - discovered_interpreter_bogus | default('nope') == 'nope'
      - ansible_bogus_interpreter | default('nope') == 'nope'
      # this one will exist in facts, but with its prefix removed
      - ansible_facts['ansible_bogus_interpreter'] | default('nope') == 'nope'
      - ansible_facts['discovered_interpreter_bogus'] | default('nope') == 'nope'

  - name: debian assertions
    assert:
      that:
      - auto_out.ansible_facts.discovered_interpreter_python == '/usr/bin/python3'
    when: distro == 'debian' and distro_version is version('10', '>=')

  - name: fedora assertions
    assert:
      that:
      - auto_out.ansible_facts.discovered_interpreter_python == '/usr/bin/python3'
    when: distro == 'fedora' and distro_version is version('23', '>=')

  - name: rhel assertions
    assert:
      that:
      # rhel 6/7
      - (auto_out.ansible_facts.discovered_interpreter_python == '/usr/bin/python' and distro_version is version('8','<')) or distro_version is version('8','>=')
      # rhel 8+
      - (auto_out.ansible_facts.discovered_interpreter_python == '/usr/libexec/platform-python' and distro_version is version('8','>=')) or distro_version is version('8','<')
    when: distro == 'redhat'

  - name: ubuntu assertions
    assert:
      that:
      # ubuntu < 16
      - (auto_out.ansible_facts.discovered_interpreter_python == '/usr/bin/python' and distro_version is version('16.04','<')) or distro_version is version('16.04','>=')
      # ubuntu >= 16
      - (auto_out.ansible_facts.discovered_interpreter_python == '/usr/bin/python3' and distro_version is version('16.04','>=')) or distro_version is version('16.04','<')
    when: distro == 'ubuntu'

  - name: mac assertions
    assert:
      that:
      - auto_out.ansible_facts.discovered_interpreter_python == '/usr/bin/python'
    when: os_family == 'darwin'

  always:
  - meta: clear_facts