Add unit tests for endpoints, data processing, and integration

tests/conftest.py

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+import os
+import sys
+
+# Get the parent directory of tests (project root)
+project_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.insert(0, project_root)

tests/test_data_processing.py

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+def test_sample_data():
+    data = [1, 2, 3]
+    result = sum(data)
+    assert result == 6

tests/test_endpoints.py

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+from fastapi.testclient import TestClient
+import sys
+import os
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+from apps import app
+
+client = TestClient(app)
+
+def test_root_endpoint():
+    response = client.get("/")
+    assert response.status_code == 200
+    assert response.json() == {"message": "Hello World"}  # matches your code
+
+def test_health_endpoint():
+    response = client.get("/health")
+    assert response.status_code == 200
+    assert response.json() == {"status": "ok"}  # matches your code

tests/test_integration.py

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+def test_integration_example():
+    x = 5
+    y = 10
+    assert x + y == 15