Only pass exclude-deprecated when True3.12.1

The '--exclude-deprecated' parameter should only be passed to
oslo.config to parse when it is True.
The final generated sphinx syntax is[1] where [--exclude-deprecated]
doesn't require True/False value and only should be passed when True.

The change introducing this[2] causes parsing issue in oslo.config[3]
while checking <bool>.startswith (we pass True/False value) and even
after that while calling argparse[4] with following error[5].

[1] usage: sphinx-build [-h] [--config-dir DIR] [--config-file PATH] [--exclude-deprecated] [--format FORMAT] [--namespace NAMESPACE]
                        [--noexclude-deprecated] [--output-file OUTPUT_FILE]
[2] https://review.opendev.org/c/openstack/oslo.policy/+/830514
[3] https://opendev.org/openstack/oslo.config/src/branch/master/oslo_config/cfg.py#L2937
[4] https://opendev.org/openstack/oslo.config/src/branch/master/oslo_config/cfg.py#L2960
[5] > /usr/lib/python3.8/argparse.py(1781)parse_args()
-> if argv:
(Pdb)
> /usr/lib/python3.8/argparse.py(1782)parse_args()
-> msg = _('unrecognized arguments: %s')
(Pdb)
> /usr/lib/python3.8/argparse.py(1783)parse_args()
-> self.error(msg % ' '.join(argv))
(Pdb)
TypeError: sequence item 0: expected str instance, bool found
> /usr/lib/python3.8/argparse.py(1783)parse_args()
-> self.error(msg % ' '.join(argv))
Handler <function generate_sample at 0x7fc0d6697d30> for event 'builder-inited' threw an exception (exception: sequence item 0: expected str instance, bool found)

Closes-Bug: #1970725
Change-Id: I95745b8d1cbdb6a7cf442d431a998b7e3ff600e4

3 files changed, 15 insertions, 10 deletions

diff --git a/oslo_policy/sphinxpolicygen.py b/oslo_policy/sphinxpolicygen.py
index 3987d04..8dd3009 100644
--- a/oslo_policy/sphinxpolicygen.py
+++ b/oslo_policy/sphinxpolicygen.py
@@ -85,10 +85,12 @@ def _generate_sample(app, policy_file, base_name, exclude_deprecated):
     # in their documented modules. It's not allowed to register a cli arg after
     # the args have been parsed once.
     conf = cfg.ConfigOpts()
+    arguments = ['--config-file', config_path,
+                 '--output-file', out_file]
+    if exclude_deprecated:
+        arguments += ['--exclude-deprecated']
     generator.generate_sample(
-        args=['--config-file', config_path,
-              '--output-file', out_file,
-              '--exclude-deprecated', exclude_deprecated],
+        args=arguments,
         conf=conf)
 
 
diff --git a/oslo_policy/tests/test_sphinxpolicygen.py b/oslo_policy/tests/test_sphinxpolicygen.py
index 4d4fb68..8b2959a 100644
--- a/oslo_policy/tests/test_sphinxpolicygen.py
+++ b/oslo_policy/tests/test_sphinxpolicygen.py
@@ -34,8 +34,7 @@ class SingleSampleGenerationTest(base.BaseTestCase):
 
         sample.assert_called_once_with(args=[
             '--config-file', '/opt/nova/nova.conf',
-            '--output-file', '/opt/nova/nova.policy.yaml.sample',
-            '--exclude-deprecated', False],
+            '--output-file', '/opt/nova/nova.policy.yaml.sample'],
             conf=mock.ANY)
 
     @mock.patch('os.path.isdir')
@@ -55,7 +54,7 @@ class SingleSampleGenerationTest(base.BaseTestCase):
         sample.assert_called_once_with(args=[
             '--config-file', '/opt/nova/nova.conf',
             '--output-file', '/opt/nova/sample.policy.yaml',
-            '--exclude-deprecated', True],
+            '--exclude-deprecated'],
             conf=mock.ANY)
 
     @mock.patch('os.path.isdir')
@@ -78,11 +77,9 @@ class SingleSampleGenerationTest(base.BaseTestCase):
         sample.assert_has_calls([
             mock.call(args=[
                 '--config-file', '/opt/nova/nova.conf',
-                '--output-file', '/opt/nova/nova.policy.yaml.sample',
-                '--exclude-deprecated', False],
+                '--output-file', '/opt/nova/nova.policy.yaml.sample'],
                 conf=mock.ANY),
             mock.call(args=[
                 '--config-file', '/opt/nova/placement.conf',
-                '--output-file', '/opt/nova/placement.policy.yaml.sample',
-                '--exclude-deprecated', False],
+                '--output-file', '/opt/nova/placement.policy.yaml.sample'],
                 conf=mock.ANY)])
diff --git a/releasenotes/notes/fix-passing-exclude-deprecated-param-317745d23022e544.yaml b/releasenotes/notes/fix-passing-exclude-deprecated-param-317745d23022e544.yaml
new file mode 100644
index 0000000..6f44389
--- /dev/null
+++ b/releasenotes/notes/fix-passing-exclude-deprecated-param-317745d23022e544.yaml
@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixed passing ``--exclude-deprecated`` boolean value to
+    sphinx-build command. Now ``--exclude-deprecated`` is only
+    passed when it is True without bool True/False value.