linnode inventory, remove redundant (ansible-collections#5438)

* remove redundant

templar is already in base class
env var is already consulted in via config resolution

* more whites

* no need to import templar again

* Add changelog fragment.

* Try to update tests.

Co-authored-by: Felix Fontein <[email protected]>

changelogs/fragments/5438-linode.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - "linode inventory plugin - simplify option handling (https://github.com/ansible-collections/community.general/pull/5438)."

plugins/inventory/linode.py

@@ -126,7 +126,6 @@
 from ansible.errors import AnsibleError, AnsibleParserError
 from ansible.module_utils.six import string_types
 from ansible.plugins.inventory import BaseInventoryPlugin, Constructable, Cacheable
-from ansible.template import Templar
 
 
 try:
@@ -145,22 +144,14 @@ class InventoryModule(BaseInventoryPlugin, Constructable, Cacheable):
     def _build_client(self, loader):
         """Build the Linode client."""
 
-        t = Templar(loader=loader)
-
         access_token = self.get_option('access_token')
-        if t.is_template(access_token):
-            access_token = t.template(variable=access_token, disable_lookups=False)
-
-        if access_token is None:
-            try:
-                access_token = os.environ['LINODE_ACCESS_TOKEN']
-            except KeyError:
-                pass
+        if self.templar.is_template(access_token):
+            access_token = self.templar.template(variable=access_token, disable_lookups=False)
 
         if access_token is None:
             raise AnsibleError((
                 'Could not retrieve Linode access token '
-                'from plugin configuration or environment'
+                'from plugin configuration sources'
             ))
 
         self.client = LinodeClient(access_token)

tests/unit/plugins/inventory/test_linode.py

@@ -18,12 +18,15 @@
 
 from ansible.errors import AnsibleError, AnsibleParserError
 from ansible.parsing.dataloader import DataLoader
+from ansible.template import Templar
 from ansible_collections.community.general.plugins.inventory.linode import InventoryModule
 
 
 @pytest.fixture(scope="module")
 def inventory():
-    return InventoryModule()
+    plugin = InventoryModule()
+    plugin.templar = Templar(loader=DataLoader())
+    return plugin
 
 
 def test_missing_access_token_lookup(inventory):