Feature/frontend testing

.pre-commit-config.yaml

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+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+      - id: check-yaml
+      - id: check-added-large-files
+  - repo: https://github.com/psf/black
+    rev: 24.4.2
+    hooks:
+      - id: black
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.4.7
+    hooks:
+      - id: ruff
+        args: [ --fix ]

backend/pytest.ini

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+[pytest]
+asyncio_mode = auto
+testpaths = tests
+python_files = test_*.py
+addopts = -v --cov=app --cov-report=term-missing

backend/tests/__init__.py

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+"""Test module initialization."""

backend/tests/conftest.py

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+import pytest
+from fastapi.testclient import TestClient
+from app.main import app
+
+@pytest.fixture(scope="session")
+def client():
+    with TestClient(app) as c:
+        yield c

backend/tests/test_main.py

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+def test_root(client):
+    response = client.get("/")
+    assert response.status_code == 200
+    assert response.json() == {
+        "name": "DevLink API",
+        "version": "1.0.0",
+        "status": "running",
+    }
+
+def test_health(client):
+    response = client.get("/health")
+    assert response.status_code == 200
+    data = response.json()
+    assert data["status"] == "healthy"
+    assert "environment" in data