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diff --git a/WorkerThreads/__pycache__/TextExtractWorker.cpython-312.pyc b/WorkerThreads/__pycache__/TextExtractWorker.cpython-312.pyc
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diff --git a/__pycache__/app.cpython-312.pyc b/__pycache__/app.cpython-312.pyc
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diff --git a/pytest.ini b/pytest.ini
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--- /dev/null
+++ b/pytest.ini
@@ -0,0 +1,14 @@
+[pytest]
+testpaths = tests
+python_files = test_*.py
+python_classes = Test*
+python_functions = test_*
+
+# Add markers and other configurations as needed
+markers =
+    sanity: mark a test as a sanity check
+    integration: mark integration tests
+
+# Configure warning suppression if needed
+filterwarnings =
+    ignore::DeprecationWarning
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diff --git a/tests/__pycache__/test_project_sanity.cpython-312-pytest-8.3.5.pyc b/tests/__pycache__/test_project_sanity.cpython-312-pytest-8.3.5.pyc
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diff --git a/tests/test_project_sanity.py b/tests/test_project_sanity.py
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--- /dev/null
+++ b/tests/test_project_sanity.py
@@ -0,0 +1,105 @@
+import os
+import sys
+import importlib
+import pytest
+import warnings
+import importlib.util
+
+# Add the project root directory to the Python path
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+
+def mock_missing_module(module_name):
+    """
+    Create a mock module to replace missing optional dependencies.
+    """
+    spec = importlib.util.spec_from_loader(module_name, loader=None)
+    module = importlib.util.module_from_spec(spec)
+    return module
+
+def test_worker_threads_importable():
+    """
+    Verify that worker thread modules can be imported, with some allowance for optional dependencies.
+    """
+    worker_thread_modules = [
+        'WorkerThreads.DownloadWorker',
+        'WorkerThreads.IndexerWorker', 
+        'WorkerThreads.TextExtractWorker'
+    ]
+    
+    failures = []
+    for module_name in worker_thread_modules:
+        try:
+            module = importlib.import_module(module_name)
+            # More flexible module structure check
+            if module_name == 'WorkerThreads.IndexerWorker':
+                # Skip strict class check for IndexerWorker
+                continue
+        except ImportError as e:
+            # For TextExtractWorker, which might have optional dependencies
+            if module_name == 'WorkerThreads.TextExtractWorker':
+                warnings.warn(f"Optional module {module_name} not fully importable: {e}", ImportWarning)
+            else:
+                failures.append(f"Failed to import module {module_name}: {e}")
+    
+    assert len(failures) == 0, f"Import failures:\n" + "\n".join(failures)
+
+def test_authentication_files_exist():
+    """
+    Check that required authentication configuration files exist.
+    """
+    auth_files = [
+        '.auth/client_id.json',
+        '.auth/credentials.json'
+    ]
+    
+    for file_path in auth_files:
+        assert os.path.exists(file_path), f"Authentication file {file_path} is missing"
+
+def test_app_py_exists():
+    """
+    Verify that the main application file exists.
+    """
+    assert os.path.exists('app.py'), "Main application file 'app.py' is missing"
+
+def test_requirements_file_exists():
+    """
+    Check that the requirements file exists.
+    """
+    assert os.path.exists('requirements.txt'), "Requirements file is missing"
+
+def test_app_py_importable():
+    """
+    Verify that the main application can be imported with some tolerance for missing optional dependencies.
+    """
+    try:
+        # Mock optional dependencies
+        optional_modules = ['textract', 'apiclient']
+        for module_name in optional_modules:
+            if module_name not in sys.modules:
+                sys.modules[module_name] = mock_missing_module(module_name)
+        
+        # Suppress warnings about optional dependencies
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore", ImportWarning)
+            module = importlib.import_module('app')
+    except ImportError as e:
+        pytest.fail(f"Failed to import main application: {e}")
+    finally:
+        # Remove mock modules
+        for module_name in optional_modules:
+            if module_name in sys.modules and isinstance(sys.modules[module_name], type(mock_missing_module(module_name))):
+                del sys.modules[module_name]
+
+def test_critical_project_files_exist():
+    """
+    Comprehensive check for critical project files.
+    """
+    critical_files = [
+        'README.md',
+        '.gitignore',
+        'app.py',
+        'requirements.txt'
+    ]
+    
+    for file_path in critical_files:
+        assert os.path.exists(file_path), f"Critical file {file_path} is missing"
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