test(python-generator): add test for directory creation

Added a testing function which tests whether the documentation directory
is created when the documentation is generated.

tests/unit/core/python/_core/test_PythonDocumentationGenerator.py

@@ -16,6 +16,8 @@ import pathlib
 
 import pytest
 
+import tempfile
+
 from src.jcloud_docsgen.core.python import PythonDocumentationGenerator
 from src.jcloud_docsgen.core.python.namespaces import (
     PythonModuleNamespace,
@@ -119,3 +121,26 @@ def test_generate_documentation(dir, expectdir):
             allow_tables=True,
             allow_html=False,
         ).generate_documentation()  # simplify the tests
+
+
+def test_creates_directory():
+    with tempfile.TemporaryDirectory() as output_dir:
+        output_dir = pathlib.Path(output_dir)
+        with tempfile.TemporaryDirectory() as project_dir:
+            project_dir = pathlib.Path(project_dir)
+
+            # The directory of the package
+            package_dir = project_dir / 'src' / 'pkg'
+            assert not package_dir.exists()
+            package_dir.mkdir(parents=True, exist_ok=True)
+
+            # The actual output directory directory
+            docs_dir = output_dir / 'docs' / 'reference'
+            # It should not exist
+            assert not docs_dir.exists()
+
+            docs_generator = PythonDocumentationGenerator(
+                project_dir, docs_dir
+            )
+            docs_generator.generate_documentation()
+            assert docs_dir.exists()