make check mode tests pass

Author: steenzout

tasks/redhat/main.yml

@@ -32,10 +32,24 @@
     - { path: "{{ oracle_java_home }}/bin", exe: 'javac' }
     - { path: "{{ oracle_java_home }}/bin", exe: 'javadoc' }
   sudo: yes
-  when: (oracle_java_set_as_default and oracle_java_task_rpm_download|changed) or
-        (oracle_java_set_as_default and oracle_java_installed and oracle_java_version_installed != oracle_java_version_string)
+  when: (
+          oracle_java_set_as_default and
+          oracle_java_task_rpm_download is defined and
+          oracle_java_task_rpm_download|changed
+        ) or (
+          oracle_java_set_as_default and
+          oracle_java_installed is defined and
+          oracle_java_installed and
+          oracle_java_version_installed is defined and
+          oracle_java_version_installed != oracle_java_version_string)
   register: oracle_java_task_set_default
 
 - name: in case there were changes, check host environment again
   include: ../check_environment.yml
-  when: not oracle_java_task_rpm_download|skipped or oracle_java_task_set_default|changed
+  when: (
+          oracle_java_task_rpm_download is defined and
+          not oracle_java_task_rpm_download|skipped
+        ) or (
+          oracle_java_task_set_default is defined and
+          oracle_java_task_set_default|changed
+        )