flatpak: add tests in CI, add no_dependencies parameter (#2751)

* Similar version restrictions than flatpak_remote tests.

* ...

* Try to work around missing dependencies.

* Revert "Try to work around missing dependencies."

This reverts commit 66a4e38566.

* Add changelog.

* App8 -> App2; make sure that there are two apps App1 and App2.

* Fix forgotten variabe.

* Remove test notices.

* Seems like flatpak no longer supports file:// URLs.

The tests would need to be rewritten to offer the URL via http:// instead.

* Try local HTTP server for URL tests.

* ...

* Lint, add status check.

* Add boilerplate.

* Add 'ps aux'.

* Surrender to -f.

* Work around apparent flatpak bug.

* Fix YAML.

* Improve condition.

* Make sure test reruns behave better.

tests/integration/targets/flatpak/tasks/test.yml

@@ -2,10 +2,11 @@
 
 - name: Test addition - {{ method }}
   flatpak:
-    name: org.gnome.Characters
-    remote: flathub
+    name: com.dummy.App1
+    remote: dummy-remote
     state: present
     method: "{{ method }}"
+    no_dependencies: true
   register: addition_result
 
 - name: Verify addition test result - {{ method }}
@@ -16,10 +17,11 @@
 
 - name: Test idempotency of addition - {{ method }}
   flatpak:
-    name: org.gnome.Characters
-    remote: flathub
+    name: com.dummy.App1
+    remote: dummy-remote
     state: present
     method: "{{ method }}"
+    no_dependencies: true
   register: double_addition_result
 
 - name: Verify idempotency of addition test result - {{ method }}
@@ -32,9 +34,10 @@
 
 - name: Test removal - {{ method }}
   flatpak:
-    name: org.gnome.Characters
+    name: com.dummy.App1
     state: absent
     method: "{{ method }}"
+    no_dependencies: true
   register: removal_result
 
 - name: Verify removal test result - {{ method }}
@@ -45,9 +48,10 @@
 
 - name: Test idempotency of removal - {{ method }}
   flatpak:
-    name: org.gnome.Characters
+    name: com.dummy.App1
     state: absent
     method: "{{ method }}"
+    no_dependencies: true
   register: double_removal_result
 
 - name: Verify idempotency of removal test result - {{ method }}
@@ -60,10 +64,11 @@
 
 - name: Test addition with url - {{ method }}
   flatpak:
-    name: https://flathub.org/repo/appstream/org.gnome.Characters.flatpakref
-    remote: flathub
+    name: http://127.0.0.1:8000/repo/com.dummy.App1.flatpakref
+    remote: dummy-remote
     state: present
     method: "{{ method }}"
+    no_dependencies: true
   register: url_addition_result
 
 - name: Verify addition test result - {{ method }}
@@ -74,10 +79,11 @@
 
 - name: Test idempotency of addition with url - {{ method }}
   flatpak:
-    name: https://flathub.org/repo/appstream/org.gnome.Characters.flatpakref
-    remote: flathub
+    name: http://127.0.0.1:8000/repo/com.dummy.App1.flatpakref
+    remote: dummy-remote
     state: present
     method: "{{ method }}"
+    no_dependencies: true
   register: double_url_addition_result
 
 - name: Verify idempotency of addition with url test result - {{ method }}
@@ -90,26 +96,46 @@
 
 - name: Test removal with url - {{ method }}
   flatpak:
-    name: https://flathub.org/repo/appstream/org.gnome.Characters.flatpakref
+    name: http://127.0.0.1:8000/repo/com.dummy.App1.flatpakref
     state: absent
     method: "{{ method }}"
+    no_dependencies: true
   register: url_removal_result
+  ignore_errors: true
 
-- name: Verify removal test result - {{ method }}
+- name: Verify removal test result failed - {{ method }}
+  # It looks like flatpak has a bug when the hostname contains a port. If this is the case, it emits
+  # the following message, which we check for. If another error happens, we fail.
+  # Upstream issue: https://github.com/flatpak/flatpak/issues/4307
+  # (The second message happens with Ubuntu 18.04.)
   assert:
     that:
-      - url_removal_result is changed
-    msg: "state=absent with url as name shall remove flatpak when present"
+      - >-
+        url_removal_result.msg in [
+          "error: Invalid branch 127.0.0.1:8000: Branch can't contain :",
+          "error: Invalid id http:: Name can't contain :",
+        ]
+  when: url_removal_result is failed
 
-- name: Test idempotency of removal with url - {{ method }}
-  flatpak:
-    name: https://flathub.org/repo/appstream/org.gnome.Characters.flatpakref
-    state: absent
-    method: "{{ method }}"
-  register: double_url_removal_result
+- when: url_removal_result is not failed
+  block:
 
-- name: Verify idempotency of removal with url test result - {{ method }}
-  assert:
-    that:
-      - double_url_removal_result is not changed
-    msg: "state=absent with url as name shall not do anything when flatpak is not present"
+  - name: Verify removal test result - {{ method }}
+    assert:
+      that:
+        - url_removal_result is changed
+      msg: "state=absent with url as name shall remove flatpak when present"
+
+  - name: Test idempotency of removal with url - {{ method }}
+    flatpak:
+      name: http://127.0.0.1:8000/repo/com.dummy.App1.flatpakref
+      state: absent
+      method: "{{ method }}"
+      no_dependencies: true
+    register: double_url_removal_result
+
+  - name: Verify idempotency of removal with url test result - {{ method }}
+    assert:
+      that:
+        - double_url_removal_result is not changed
+      msg: "state=absent with url as name shall not do anything when flatpak is not present"