ems-core v1.0.0: Standard EMS platform core

Shared backend + frontend for multi-customer EMS deployments.
- 12 enterprise modules: quota, cost, charging, maintenance, analysis, etc.
- 120+ API endpoints, 37 database tables
- Customer config mechanism (CUSTOMER env var + YAML config)
- Collectors: Modbus TCP, MQTT, HTTP API, Sungrow iSolarCloud
- Frontend: React 19 + Ant Design + ECharts + Three.js
- Infrastructure: Redis cache, rate limiting, aggregation engine

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/tests/test_auth.py

@@ -0,0 +1,66 @@
+import pytest
+from conftest import auth_header
+
+
+class TestLogin:
+    async def test_login_valid_credentials(self, client, admin_user):
+        resp = await client.post(
+            "/api/v1/auth/login",
+            data={"username": "testadmin", "password": "admin123"},
+        )
+        assert resp.status_code == 200
+        body = resp.json()
+        assert "access_token" in body
+        assert body["token_type"] == "bearer"
+        assert body["user"]["username"] == "testadmin"
+        assert body["user"]["role"] == "admin"
+
+    async def test_login_wrong_password(self, client, admin_user):
+        resp = await client.post(
+            "/api/v1/auth/login",
+            data={"username": "testadmin", "password": "wrongpass"},
+        )
+        assert resp.status_code == 401
+
+    async def test_login_nonexistent_user(self, client):
+        resp = await client.post(
+            "/api/v1/auth/login",
+            data={"username": "nobody", "password": "whatever"},
+        )
+        assert resp.status_code == 401
+
+    async def test_login_inactive_user(self, client, db_session):
+        from app.core.security import hash_password
+        from app.models.user import User
+        user = User(
+            username="inactive", hashed_password=hash_password("pass123"),
+            role="visitor", is_active=False,
+        )
+        db_session.add(user)
+        await db_session.commit()
+        resp = await client.post(
+            "/api/v1/auth/login",
+            data={"username": "inactive", "password": "pass123"},
+        )
+        assert resp.status_code == 403
+
+
+class TestMe:
+    async def test_me_with_valid_token(self, client, admin_user, admin_token):
+        resp = await client.get("/api/v1/auth/me", headers=auth_header(admin_token))
+        assert resp.status_code == 200
+        body = resp.json()
+        assert body["username"] == "testadmin"
+        assert body["role"] == "admin"
+        assert body["is_active"] is True
+
+    async def test_me_without_token(self, client):
+        resp = await client.get("/api/v1/auth/me")
+        assert resp.status_code == 401
+
+    async def test_me_with_invalid_token(self, client):
+        resp = await client.get(
+            "/api/v1/auth/me",
+            headers=auth_header("invalid.token.here"),
+        )
+        assert resp.status_code == 401