python_runner/django_command: bugfixes (#8944)

* python_runner/django_command: bugfixes

* fix indentation

* join path_prefix with : when concatenating with PATH

* add changelog frag

tests/integration/targets/django_command/tasks/main.yaml

@@ -0,0 +1,91 @@
+# Test code for django_command module
+#
+# Copyright (c) 2020, Alexei Znamensky <russoz@gmail.com>
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+- name: Create temporary test directory
+  tempfile:
+    state: directory
+    suffix: .django_command
+  register: tmp_django_root
+
+- name: Install OS package virtualenv
+  package:
+    name: "{{ os_package_name.virtualenv }}"
+    state: present
+
+- name: Ensure virtualenv is created
+  command: >-
+    virtualenv {{ tmp_django_root.path }}/venv
+
+- name: Update python package pip
+  pip:
+    name: pip
+    state: latest
+    virtualenv: "{{ tmp_django_root.path }}/venv"
+
+- name: Install python package django
+  pip:
+    name: django
+    state: present
+    virtualenv: "{{ tmp_django_root.path }}/venv"
+
+- name: Copy files
+  copy:
+    src: base_test/
+    dest: "{{ tmp_django_root.path }}"
+    mode: preserve
+
+- name: Create project
+  command:
+    chdir: "{{ tmp_django_root.path }}/startproj"
+    cmd: "{{ tmp_django_root.path }}/venv/bin/django-admin startproject test_django_command_1"
+
+- name: Create app
+  command:
+    chdir: "{{ tmp_django_root.path }}/startproj"
+    cmd: "{{ tmp_django_root.path }}/venv/bin/django-admin startapp app1"
+
+- name: Check
+  community.general.django_command:
+    pythonpath: "{{ tmp_django_root.path }}/startproj/test_django_command_1"
+    settings: test_django_command_1.settings
+    command: check
+    venv: "{{ tmp_django_root.path }}/venv"
+
+- name: Check simple_project
+  community.general.django_command:
+    pythonpath: "{{ tmp_django_root.path }}/simple_project/p1"
+    settings: p1.settings
+    command: check
+    venv: "{{ tmp_django_root.path }}/venv"
+
+- name: Check custom project
+  community.general.django_command:
+    pythonpath: "{{ tmp_django_root.path }}/1045-single-app-project/single_app_project"
+    settings: core.settings
+    command: check
+    venv: "{{ tmp_django_root.path }}/venv"
+
+- name: Run collectstatic --noinput on simple project
+  community.general.django_command:
+    pythonpath: "{{ tmp_django_root.path }}/simple_project/p1"
+    settings: p1.settings
+    command: collectstatic --noinput
+    venv: "{{ tmp_django_root.path }}/venv"
+
+- name: Trigger exception with environment variable
+  community.general.django_command:
+    pythonpath: "{{ tmp_django_root.path }}/simple_project/p1"
+    settings: p1.settings
+    command: collectstatic --noinput
+    venv: "{{ tmp_django_root.path }}/venv"
+  environment:
+    DJANGO_ANSIBLE_RAISE: blah
+  ignore_errors: true
+  register: env_raise
+
+- name: Check env variable reached manage.py
+  ansible.builtin.assert:
+    that:
+      - "'ValueError: DJANGO_ANSIBLE_RAISE=blah' in env_raise.msg"