yum: fix 'package == version' syntax (ansible#47744)

changelogs/fragments/47689-yum-fix-version-syntax.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - yum - fix "package == version" syntax (https://github.com/ansible/ansible/pull/47744)

lib/ansible/module_utils/yumdnf.py

@@ -97,7 +97,7 @@ def __init__(self, module):
 
         # Fail if someone passed a space separated string
         # https://github.com/ansible/ansible/issues/46301
-        if any((' ' in name and '@' not in name for name in self.names)):
+        if any((' ' in name and '@' not in name and '==' not in name for name in self.names)):
             module.fail_json(
                 msg='It appears that a space separated string of packages was passed in '
                     'as an argument. To operate on several packages, pass a comma separated '

test/integration/targets/yum/tasks/repo.yml

@@ -556,3 +556,35 @@
         name: foo
         state: absent
   when: not (ansible_distribution == "Fedora" and ansible_distribution_major_version|int < 26)
+
+# https://github.com/ansible/ansible/issues/47689
+- block:
+    - name: Install foo == 1.0
+      yum:
+        name: "foo == 1.0"
+        state: present
+      register: yum_result
+
+    - name: Check foo with rpm
+      shell: rpm -q foo
+      register: rpm_result
+
+    - name: Verify installation
+      assert:
+        that:
+            - "yum_result.changed"
+            - "rpm_result.stdout.startswith('foo-1.0-1')"
+
+    - name: Verify yum module outputs
+      assert:
+        that:
+            - "'msg' in yum_result"
+            - "'rc' in yum_result"
+            - "'results' in yum_result"
+  always:
+    - name: Clean up
+      yum:
+        name: foo
+        state: absent
+
+  when: ansible_pkg_mgr == 'yum'