DNF Handle Empty AppStream stream definition (#63819)

* DNF Handle Empty AppStream stream definition

Fixes #63683

Signed-off-by: Adam Miller <admiller@redhat.com>

* Switch Fedora dnf test target modularity to stratis

In Fedora 29, the metadata was not properly set for a default stream
for ripgrep even though there is a profile called "default", however
that's an arbitrary string and the module maintainer must set the
default stream (which it never was for the ripgrep module, thus
failing the "empty stream" install test)

Signed-off-by: Adam Miller <admiller@redhat.com>

changelogs/fragments/63683-dnf-handle-empty-appstream-stream.yml

@@ -0,0 +1,3 @@
+---
+minor_changes:
+  - dnf - Properly handle module AppStreams that don't define stream (https://github.com/ansible/ansible/issues/63683)

lib/ansible/modules/packaging/os/dnf.py

@@ -886,9 +886,16 @@ class DnfModule(YumDnf):
         if self.with_modules:
             module_spec = module_spec.strip()
             module_list, nsv = self.module_base._get_modules(module_spec)
+            enabled_streams = self.base._moduleContainer.getEnabledStream(nsv.name)
 
-            if nsv.stream in self.base._moduleContainer.getEnabledStream(nsv.name):
-                return True
+            if enabled_streams:
+                if nsv.stream:
+                    if nsv.stream in enabled_streams:
+                        return True     # The provided stream was found
+                    else:
+                        return False    # The provided stream was not found
+                else:
+                    return True         # No stream provided, but module found
 
         return False  # seems like a sane default
 

test/integration/targets/dnf/tasks/modularity.yml

@@ -49,3 +49,51 @@
     that:
         - "not dnf_result.failed"
         - "not dnf_result.changed"
+
+- name: install "{{ astream_name_no_stream }}" module without providing stream
+  dnf:
+    name: "{{ astream_name_no_stream }}"
+    state: present
+  register: dnf_result
+
+- name: verify installation of "{{ astream_name_no_stream }}" module without providing stream
+  assert:
+    that:
+        - "not dnf_result.failed"
+        - "dnf_result.changed"
+
+- name: install "{{ astream_name_no_stream }}" module again without providing stream
+  dnf:
+    name: "{{ astream_name_no_stream }}"
+    state: present
+  register: dnf_result
+
+- name: verify installation of "{{ astream_name_no_stream }}" module again without providing stream
+  assert:
+    that:
+        - "not dnf_result.failed"
+        - "not dnf_result.changed"
+
+- name: uninstall "{{ astream_name_no_stream }}" module without providing stream
+  dnf:
+    name: "{{ astream_name_no_stream }}"
+    state: absent
+  register: dnf_result
+
+- name: verify uninstallation of "{{ astream_name_no_stream }}" module without providing stream
+  assert:
+    that:
+        - "not dnf_result.failed"
+        - "dnf_result.changed"
+
+- name: uninstall "{{ astream_name_no_stream }}" module again without providing stream
+  dnf:
+    name: "{{ astream_name_no_stream }}"
+    state: absent
+  register: dnf_result
+
+- name: verify uninstallation of "{{ astream_name_no_stream }}" module again without providing stream
+  assert:
+    that:
+        - "not dnf_result.failed"
+        - "not dnf_result.changed"

test/integration/targets/dnf/vars/Fedora.yml

@@ -1 +1,2 @@
-astream_name: '@ripgrep:master/default'
+astream_name: '@stratis:1/default'
+astream_name_no_stream: '@stratis/default'

test/integration/targets/dnf/vars/RedHat.yml

@@ -1 +1,2 @@
 astream_name: '@php:7.2/minimal'
+astream_name_no_stream: '@php/minimal'