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backend/tests/test_resource_hubs.py

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+import pytest
+from fastapi.testclient import TestClient
+from unittest.mock import MagicMock
+from src.app import app
+from src.dependencies import get_config_manager, get_task_manager, get_resource_service, has_permission
+
+client = TestClient(app)
+
+# [DEF:test_dashboards_api:Test]
+# @PURPOSE: Verify GET /api/dashboards contract compliance
+# @TEST: Valid env_id returns 200 and dashboard list
+# @TEST: Invalid env_id returns 404
+# @TEST: Search filter works
+
+@pytest.fixture
+def mock_deps():
+    config_manager = MagicMock()
+    task_manager = MagicMock()
+    resource_service = MagicMock()
+    
+    # Mock environment
+    env = MagicMock()
+    env.id = "env1"
+    config_manager.get_environments.return_value = [env]
+    
+    # Mock tasks
+    task_manager.get_all_tasks.return_value = []
+    
+    # Mock dashboards
+    resource_service.get_dashboards_with_status.return_value = [
+        {"id": 1, "title": "Sales", "slug": "sales", "git_status": {"branch": "main", "sync_status": "OK"}, "last_task": None},
+        {"id": 2, "title": "Marketing", "slug": "mkt", "git_status": None, "last_task": {"task_id": "t1", "status": "SUCCESS"}}
+    ]
+    
+    app.dependency_overrides[get_config_manager] = lambda: config_manager
+    app.dependency_overrides[get_task_manager] = lambda: task_manager
+    app.dependency_overrides[get_resource_service] = lambda: resource_service
+    
+    # Bypass permission check
+    mock_user = MagicMock()
+    mock_user.username = "testadmin"
+    
+    # Override both get_current_user and has_permission
+    from src.dependencies import get_current_user
+    app.dependency_overrides[get_current_user] = lambda: mock_user
+    
+    # We need to override the specific instance returned by has_permission
+    app.dependency_overrides[has_permission("plugin:migration", "READ")] = lambda: mock_user
+    
+    yield {
+        "config": config_manager,
+        "task": task_manager,
+        "resource": resource_service
+    }
+    
+    app.dependency_overrides.clear()
+
+def test_get_dashboards_success(mock_deps):
+    response = client.get("/api/dashboards?env_id=env1")
+    assert response.status_code == 200
+    data = response.json()
+    assert "dashboards" in data
+    assert len(data["dashboards"]) == 2
+    assert data["dashboards"][0]["title"] == "Sales"
+    assert data["dashboards"][0]["git_status"]["sync_status"] == "OK"
+
+def test_get_dashboards_not_found(mock_deps):
+    response = client.get("/api/dashboards?env_id=invalid")
+    assert response.status_code == 404
+
+def test_get_dashboards_search(mock_deps):
+    response = client.get("/api/dashboards?env_id=env1&search=Sales")
+    assert response.status_code == 200
+    data = response.json()
+    assert len(data["dashboards"]) == 1
+    assert data["dashboards"][0]["title"] == "Sales"
+
+# [/DEF:test_dashboards_api:Test]
+
+# [DEF:test_datasets_api:Test]
+# @PURPOSE: Verify GET /api/datasets contract compliance
+# @TEST: Valid env_id returns 200 and dataset list
+# @TEST: Invalid env_id returns 404
+# @TEST: Search filter works
+# @TEST: Negative - Service failure returns 503
+
+def test_get_datasets_success(mock_deps):
+    mock_deps["resource"].get_datasets_with_status.return_value = [
+        {"id": 1, "table_name": "orders", "schema": "public", "database": "db1", "mapped_fields": {"total": 10, "mapped": 5}, "last_task": None}
+    ]
+    
+    response = client.get("/api/datasets?env_id=env1")
+    assert response.status_code == 200
+    data = response.json()
+    assert "datasets" in data
+    assert len(data["datasets"]) == 1
+    assert data["datasets"][0]["table_name"] == "orders"
+    assert data["datasets"][0]["mapped_fields"]["mapped"] == 5
+
+def test_get_datasets_not_found(mock_deps):
+    response = client.get("/api/datasets?env_id=invalid")
+    assert response.status_code == 404
+
+def test_get_datasets_search(mock_deps):
+    mock_deps["resource"].get_datasets_with_status.return_value = [
+        {"id": 1, "table_name": "orders", "schema": "public", "database": "db1", "mapped_fields": {"total": 10, "mapped": 5}, "last_task": None},
+        {"id": 2, "table_name": "users", "schema": "public", "database": "db1", "mapped_fields": {"total": 5, "mapped": 5}, "last_task": None}
+    ]
+    
+    response = client.get("/api/datasets?env_id=env1&search=orders")
+    assert response.status_code == 200
+    data = response.json()
+    assert len(data["datasets"]) == 1
+    assert data["datasets"][0]["table_name"] == "orders"
+
+def test_get_datasets_service_failure(mock_deps):
+    mock_deps["resource"].get_datasets_with_status.side_effect = Exception("Superset down")
+    
+    response = client.get("/api/datasets?env_id=env1")
+    assert response.status_code == 503
+    assert "Failed to fetch datasets" in response.json()["detail"]
+
+# [/DEF:test_datasets_api:Test]