Added pytest + some tests.

Added AWS S3 Support (optional, for cloud image storage)

tests/README.md

@@ -0,0 +1,54 @@
+# Tests
+
+This directory contains pytest tests for the Google Reviews Scraper.
+
+## Running Tests
+
+1. Install dependencies:
+```bash
+pip install -r requirements.txt
+```
+
+2. Run all tests:
+```bash
+pytest tests/
+```
+
+3. Run specific test files:
+```bash
+pytest tests/test_mongodb_connection.py
+pytest tests/test_s3_connection.py
+```
+
+4. Run with verbose output:
+```bash
+pytest tests/ -v
+```
+
+## Test Coverage
+
+### MongoDB Connection Tests (`test_mongodb_connection.py`)
+- Tests MongoDB connection when enabled in config
+- Validates MongoDB configuration parameters
+- Tests basic database operations (insert/find/delete)
+- Skips tests when MongoDB is disabled
+
+### S3 Connection Tests (`test_s3_connection.py`)
+- Tests S3 connection when enabled in config
+- Validates S3 configuration parameters
+- Tests file upload/download operations
+- Tests S3Handler class initialization
+- Skips tests when S3 is disabled
+
+## Configuration
+
+Tests use the main `config.yaml` file in the project root. Make sure your configuration is properly set up:
+
+- For MongoDB tests: Ensure `use_mongodb: true` and valid MongoDB credentials
+- For S3 tests: Ensure `use_s3: true` and valid AWS credentials
+
+## Test Results
+
+- Tests will be skipped if the corresponding service (MongoDB/S3) is disabled in config
+- Failed connection tests indicate configuration or service availability issues
+- All tests should pass when services are properly configured and accessible