ansible/test/integration/targets/postgresql/tasks/postgresql_set.yml

# Test code for the postgresql_set module
# Copyright: (c) 2019, Andrew Klychkov (@Andersson007) <aaklychkov@mail.ru>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
#
# Notice: assertions are different for Ubuntu 16.04 and FreeBSD because they don't work
# correctly for these tests. There are some stranges exactly in Shippable CI.
# However I checked it manually for all points (including Ubuntu 16.05 and FreeBSD)
# and it worked as expected.

- vars:
    task_parameters: &task_parameters
      become_user: '{{ pg_user }}'
      become: yes
    pg_parameters: &pg_parameters
      login_user: '{{ pg_user }}'
      login_db: postgres

  block:
  - name: postgresql_set - preparation to the next step
    <<: *task_parameters
    become_user: "{{ pg_user }}"
    become: yes
    postgresql_set:
      <<: *pg_parameters
      name: work_mem
      reset: yes

  #####################
  # Testing check_mode:
  - name: postgresql_set - get work_mem initial value
    <<: *task_parameters
    postgresql_query:
      <<: *pg_parameters
      query: SHOW work_mem
    register: before

  - name: postgresql_set - set work_mem (restart is not required), check_mode
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: work_mem
      value: 12MB
    register: set_wm
    check_mode: yes

  - assert:
      that:
      - set_wm.name == 'work_mem'
      - set_wm.changed == true
      - set_wm.prev_val_pretty == before.query_result[0].work_mem
      - set_wm.value_pretty == '12MB'
      - set_wm.restart_required == false

  - name: postgresql_set - get work_mem value to check, must be the same as initial
    <<: *task_parameters
    postgresql_query:
      <<: *pg_parameters
      query: SHOW work_mem
    register: after

  - assert:
      that:
      - before.query_result[0].work_mem == after.query_result[0].work_mem
  ######
  #

  - name: postgresql_set - set work_mem (restart is not required)
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: work_mem
      value: 12MB
    register: set_wm

  - assert:
      that:
      - set_wm.name == 'work_mem'
      - set_wm.changed == true
      - set_wm.value_pretty == '12MB'
      - set_wm.value_pretty != set_wm.prev_val_pretty
      - set_wm.restart_required == false
      - set_wm.value.value == 12582912
      - set_wm.value.unit == 'b'
    when:
    - ansible_distribution != "Ubuntu"
    - ansible_distribution_major_version != '16'
    - ansible_distribution != "FreeBSD"

  - assert:
      that:
      - set_wm.name == 'work_mem'
      - set_wm.changed == true
      - set_wm.restart_required == false
    when:
    - ansible_distribution == "Ubuntu"
    - ansible_distribution_major_version == '16'

  - name: postgresql_set - reset work_mem (restart is not required)
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: work_mem
      reset: yes
    register: reset_wm

  - assert:
      that:
      - reset_wm.name == 'work_mem'
      - reset_wm.changed == true
      - reset_wm.value_pretty != reset_wm.prev_val_pretty
      - reset_wm.restart_required == false
      - reset_wm.value.value != '12582912' 
    when:
    - ansible_distribution != "Ubuntu"
    - ansible_distribution_major_version != '16'
    - ansible_distribution != "FreeBSD"

  - assert:
      that:
      - reset_wm.name == 'work_mem'
      - reset_wm.changed == true
      - reset_wm.restart_required == false
    when:
    - ansible_distribution == "Ubuntu"
    - ansible_distribution_major_version == '16'

  - name: postgresql_set - reset work_mem again to check that nothing changed (restart is not required)
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: work_mem
      reset: yes
    register: reset_wm2

  - assert:
      that:
      - reset_wm2.name == 'work_mem'
      - reset_wm2.changed == false
      - reset_wm2.value_pretty == reset_wm2.prev_val_pretty
      - reset_wm2.restart_required == false
    when:
    - ansible_distribution != "Ubuntu"
    - ansible_distribution_major_version != '16'

  - assert:
      that:
      - reset_wm2.name == 'work_mem'
      - reset_wm2.changed == false
      - reset_wm2.restart_required == false
    when:
    - ansible_distribution == "Ubuntu"
    - ansible_distribution_major_version == '16'

  - name: postgresql_set - preparation to the next step
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: work_mem
      value: 14MB

  - name: postgresql_set - set work_mem to initial state (restart is not required)
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: work_mem
      value: default
    register: def_wm

  - assert:
      that:
      - def_wm.name == 'work_mem'
      - def_wm.changed == true
      - def_wm.value_pretty != def_wm.prev_val_pretty
      - def_wm.restart_required == false
      - def_wm.value.value != '14680064' 
    when:
    - ansible_distribution != "Ubuntu"
    - ansible_distribution_major_version != '16'
    - ansible_distribution != 'FreeBSD'

  - assert:
      that:
      - def_wm.name == 'work_mem'
      - def_wm.changed == true
      - def_wm.restart_required == false
    when:
    - ansible_distribution == "Ubuntu"
    - ansible_distribution_major_version == '16'
    - ansible_distribution != 'FreeBSD'

  - name: postgresql_set - set shared_buffers (restart is required)
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: shared_buffers
      value: 111MB
    register: set_shb

  - assert:
      that:
      - set_shb.name == 'shared_buffers'
      - set_shb.changed == true
      - set_shb.restart_required == true

  # We don't check value.unit because it is none
  - name: postgresql_set - set autovacuum (enabled by default, restart is not required)
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: autovacuum
      value: off
    register: set_aut

  - assert:
      that:
      - set_aut.name == 'autovacuum'
      - set_aut.changed == true
      - set_aut.restart_required == false
      - set_aut.value.value == 'off'

  # Test check_mode, step 1. At the previous test we set autovacuum = 'off'
  - name: postgresql - try to change autovacuum again in check_mode
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: autovacuum
      value: on
    register: set_aut
    check_mode: yes

  - assert:
      that:
      - set_aut.name == 'autovacuum'
      - set_aut.changed == true
      - set_aut.restart_required == false
      - set_aut.value.value == 'off'

  # Test check_mode, step 2
  - name: postgresql - check that autovacuum wasn't actually changed after change in check_mode
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: autovacuum
      value: off
    register: set_aut
    check_mode: yes

  - assert:
      that:
      - set_aut.name == 'autovacuum'
      - set_aut.changed == false
      - set_aut.restart_required == false
      - set_aut.value.value == 'off'

  # Additional check by SQL query:
  - name: postgresql_set - get autovacuum value to check, must be off
    <<: *task_parameters
    postgresql_query:
      <<: *pg_parameters
      query: SHOW autovacuum
    register: result

  - assert:
      that:
      - result.query_result[0].autovacuum == 'off'

  # Test check_mode, step 3. It is different from
  # the prev test - it runs without check_mode: yes.
  # Before the check_mode tests autovacuum was off
  - name: postgresql - check that autovacuum wasn't actually changed after change in check_mode
    <<: *task_parameters
    postgresql_set:
      <<: *pg_parameters
      name: autovacuum
      value: off
    register: set_aut

  - assert:
      that:
      - set_aut.name == 'autovacuum'
      - set_aut.changed == false
      - set_aut.restart_required == false
      - set_aut.value.value == 'off'