apk: fix empty/whitespace-only package name check (#10532)

* Fix empty/whitespace-only package name check.

* Adjust test.

changelogs/fragments/10532-apk.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - "apk - fix check for empty/whitespace-only package names (https://github.com/ansible-collections/community.general/pull/10532)."

plugins/modules/apk.py

@@ -351,7 +351,7 @@ def main():
 
     p = module.params
 
-    if all(not name.strip() for name in p['name']):
+    if p['name'] and any(not name.strip() for name in p['name']):
         module.fail_json(msg="Package name(s) cannot be empty or whitespace-only")
 
     if p['no_cache']:

tests/integration/targets/apk/tasks/main.yml

@@ -183,16 +183,17 @@
           - result_spaces is failed
           - "'Package name(s) cannot be empty or whitespace-only' == result_spaces.msg"
 
-    - name: Accept list with valid and empty string
+    - name: Do not accept list with valid and empty string
       community.general.apk:
         name: ["busybox", ""]
-      register: result_valid_mixed
+      register: result_invalid_mixed
       ignore_errors: true
 
-    - name: Assert success with mixed package list
+    - name: Assert failure with mixed package list
       ansible.builtin.assert:
         that:
-          - result_valid_mixed is not failed
+          - result_invalid_mixed is failed
+          - "'Package name(s) cannot be empty or whitespace-only' == result_invalid_mixed.msg"
 
     - name: Reject package name list with multiple empty/whitespace-only strings
       community.general.apk: