Add unit tests for package_update.py

roles/openshift_health_checker/test/package_update_test.py

@@ -0,0 +1,16 @@
+from openshift_checks.package_update import PackageUpdate
+
+
+def test_package_update():
+    return_value = object()
+
+    def execute_module(module_name=None, module_args=None, tmp=None, task_vars=None):
+        assert module_name == 'check_yum_update'
+        assert 'packages' in module_args
+        # empty list of packages means "generic check if 'yum update' will work"
+        assert module_args['packages'] == []
+        return return_value
+
+    check = PackageUpdate(execute_module=execute_module)
+    result = check.run(tmp=None, task_vars=None)
+    assert result is return_value