From 4b657031ff309cb8b004cd7fbd44ae479ce09432 Mon Sep 17 00:00:00 2001
From: Rodolfo Carvalho <rhcarvalho@gmail.com>
Date: Wed, 22 Mar 2017 16:51:25 +0100
Subject: Test OpenShift health check loader

---
 .../action_plugins/openshift_health_check.py       |  4 +++-
 .../openshift_checks/__init__.py                   | 27 ++++++++++++----------
 .../test/openshift_check_test.py                   |  9 +++++++-
 3 files changed, 26 insertions(+), 14 deletions(-)

diff --git a/roles/openshift_health_checker/action_plugins/openshift_health_check.py b/roles/openshift_health_checker/action_plugins/openshift_health_check.py
index 027abf398..cf0fe19f1 100644
--- a/roles/openshift_health_checker/action_plugins/openshift_health_check.py
+++ b/roles/openshift_health_checker/action_plugins/openshift_health_check.py
@@ -17,7 +17,7 @@ from ansible.plugins.action import ActionBase
 # this callback plugin.
 sys.path.insert(1, os.path.dirname(os.path.dirname(__file__)))
 
-from openshift_checks import OpenShiftCheck, OpenShiftCheckException  # noqa: E402
+from openshift_checks import OpenShiftCheck, OpenShiftCheckException, load_checks  # noqa: E402
 
 
 class ActionModule(ActionBase):
@@ -78,6 +78,8 @@ class ActionModule(ActionBase):
         return result
 
     def load_known_checks(self):
+        load_checks()
+
         known_checks = {}
 
         known_check_classes = set(cls for cls in OpenShiftCheck.subclasses())
diff --git a/roles/openshift_health_checker/openshift_checks/__init__.py b/roles/openshift_health_checker/openshift_checks/__init__.py
index 72d0b26df..be63d864a 100644
--- a/roles/openshift_health_checker/openshift_checks/__init__.py
+++ b/roles/openshift_health_checker/openshift_checks/__init__.py
@@ -63,6 +63,21 @@ class OpenShiftCheck(object):
                 yield subclass
 
 
+LOADER_EXCLUDES = (
+    "__init__.py",
+    "mixins.py",
+)
+
+
+def load_checks():
+    """Dynamically import all check modules for the side effect of registering checks."""
+    return [
+        import_module(__package__ + "." + name[:-3])
+        for name in os.listdir(os.path.dirname(__file__))
+        if name.endswith(".py") and name not in LOADER_EXCLUDES
+    ]
+
+
 def get_var(task_vars, *keys, **kwargs):
     """Helper function to get deeply nested values from task_vars.
 
@@ -78,15 +93,3 @@ def get_var(task_vars, *keys, **kwargs):
             return kwargs["default"]
         raise OpenShiftCheckException("'{}' is undefined".format(".".join(map(str, keys))))
     return value
-
-
-# Dynamically import all submodules for the side effect of loading checks.
-
-EXCLUDES = (
-    "__init__.py",
-    "mixins.py",
-)
-
-for name in os.listdir(os.path.dirname(__file__)):
-    if name.endswith(".py") and name not in EXCLUDES:
-        import_module(__package__ + "." + name[:-3])
diff --git a/roles/openshift_health_checker/test/openshift_check_test.py b/roles/openshift_health_checker/test/openshift_check_test.py
index 9cbd5b11e..03465a7c3 100644
--- a/roles/openshift_health_checker/test/openshift_check_test.py
+++ b/roles/openshift_health_checker/test/openshift_check_test.py
@@ -1,6 +1,7 @@
 import pytest
 
-from openshift_checks import OpenShiftCheck, get_var, OpenShiftCheckException
+from openshift_checks import OpenShiftCheck, OpenShiftCheckException
+from openshift_checks import load_checks, get_var
 
 
 # Fixtures
@@ -57,6 +58,12 @@ def test_OpenShiftCheck_init():
     assert check.module_executor == execute_module
 
 
+def test_load_checks():
+    """Loading checks should load and return Python modules."""
+    modules = load_checks()
+    assert modules
+
+
 @pytest.mark.parametrize("keys,expected", [
     (("foo",), 42),
     (("bar", "baz"), "openshift"),
-- 
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