ensure samples folder exists for microversion

When adding a microversion, a new corresponding folder
for auto-generated samples is required.
However, the folder has to be created manually for the
generation to succeed.

With this change, it is ensured that the folder
is present, removing manual interaction.

Closes-Bug: #1946771
Change-Id: I18f2e509f8c1ae3ad5866b568afc6e0c341e5c3e
Signed-off-by: Jan Hartkopf <[email protected]>

Author: hrtkpf

nova/tests/functional/api_samples_test_base.py

@@ -135,8 +135,11 @@ def _write_template(self, name, data):
             outf.write(data)
 
     def _write_sample(self, name, data):
-        with open(self._get_sample(
-            name, self.microversion), 'w') as outf:
+        sample_file = self._get_sample(name, self.microversion)
+
+        os.makedirs(os.path.dirname(sample_file), exist_ok = True)
+
+        with open(sample_file, 'w') as outf:
             outf.write(data)
 
     def _compare_result(self, expected, result, result_str):