FIX: JSON schema now is more permissive, and fixed if-conditions.

For #75 (closed), #103 (closed).

Summary

In the JSON schema:

• Fix authentication requirements.
• Allow more sections.

Focus

• Is the JSON schema still correct?
• Are all the cases covered in the tests?

Test Environment

pytest --no-cov unittests/test_schema.py

Check List for the Author

• All automated tests pass
• Reference related issues
• Up-to-date CHANGELOG.md (or not necessary)
• Annotations in code (Gitlab comments)
  • Intent of new code
  • Problems with old code
  • Why this implementation?

Check List for the Reviewer

• I understand the intent of this MR
• All automated tests pass
• Up-to-date CHANGELOG.md (or not necessary)
• The test environment setup works and the intended behavior is reproducible in the test environment
• In-code documentation and comments are up-to-date.
• Check: Are there specifications? Are they satisfied?

For further good practices have a look at our review guidelines.

src/caosdb/configuration.py

@@ -84,23 +84,28 @@ def config_to_yaml(config):
 
 
 def validate_yaml_schema(valobj):
-    # TODO: Re-enable warning once the schema has been extended to also cover
-    # SSS pycaosdb.inis and integration tests.
     if optional_jsonschema_validate:
         with open(os.path.join(os.path.dirname(__file__), "schema-pycaosdb-ini.yml")) as f:
             schema = yaml.load(f, Loader=yaml.SafeLoader)
         optional_jsonschema_validate(instance=valobj, schema=schema["schema-pycaosdb-ini"])
-    # else:
-    #     warnings.warn("""
-    #                     Warning: The validation could not be performed because `jsonschema` is not installed.
-    #                 """)
+    else:
+        warnings.warn("""
+            Warning: The validation could not be performed because `jsonschema` is not installed.
+        """)
 
 
 def _read_config_files():
-    """Function to read config files from different paths. Checks for path in $PYCAOSDBINI or home directory (.pycaosdb.ini) and in the current working directory (pycaosdb.ini).
+    """Function to read config files from different paths.
+
+    Checks for path either in ``$PYCAOSDBINI`` or home directory (``.pycaosdb.ini``), and
+    additionally in the current working directory (``pycaosdb.ini``).
+
+    Returns
+    -------
+
+    ini files: list
+      The successfully parsed ini-files. Order: env_var or home directory, cwd. Used for testing the function.
 
-    Returns:
-        [list]: list with successfully parsed ini-files. Order: env_var or home directory, cwd. Used for testing the function.
     """
     return_var = []
     if "PYCAOSDBINI" in environ: