test(python-generator): update tests to do not assume src/ directories

Updated tests to do not implicitly assume a 'src/' directory structure
and removed all 'src/' subdirectory structures in test project
directories (if possible).

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

@@ -31,7 +31,7 @@ from src.jcloud_docsgen.core.python.namespaces import (
         (
             PythonDocumentationGenerator(
                 pathlib.Path(
-                    'tests/unit/core/python/_core/test_project_dirs/pdir_1'
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_1/src'
                 ),
                 pathlib.Path(
                     'tests/unit/core/python/_core/test_project_dirs/pdir_1/docs'
@@ -42,7 +42,7 @@ from src.jcloud_docsgen.core.python.namespaces import (
         (
             PythonDocumentationGenerator(
                 pathlib.Path(
-                    'tests/unit/core/python/_core/test_project_dirs/pdir_2'
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_2/src'
                 ),
                 pathlib.Path(
                     'tests/unit/core/python/_core/test_project_dirs/pdir_2/docs'
@@ -58,7 +58,7 @@ from src.jcloud_docsgen.core.python.namespaces import (
         (
             PythonDocumentationGenerator(
                 pathlib.Path(
-                    'tests/unit/core/python/_core/test_project_dirs/pdir_3'
+                    'tests/unit/core/python/_core/test_project_dirs/pdir_3/src'
                 ),
                 pathlib.Path(
                     'tests/unit/core/python/_core/test_project_dirs/pdir_3/docs'
@@ -85,7 +85,7 @@ def test_PythonDocumentationGenerator_collect_modules(
     python_documentation_generator: PythonDocumentationGenerator,
     expected,
 ):
-    assert python_documentation_generator.namespace() == expected
+    assert python_documentation_generator.namespace().sub_namespaces == expected
 
 
 @pytest.mark.parametrize(
@@ -130,7 +130,7 @@ def test_creates_directory():
             project_dir = pathlib.Path(project_dir)
 
             # The directory of the package
-            package_dir = project_dir / 'src' / 'pkg'
+            package_dir = project_dir / 'pkg'
             assert not package_dir.exists()
             package_dir.mkdir(parents=True, exist_ok=True)