feat: complete leave approval MVP

ai-service/tests/test_leave_progress.py

@@ -0,0 +1,57 @@
+from fastapi.testclient import TestClient
+
+from app.main import app, get_progress_gateway
+from app.models import LeaveProgressAnswerRequest
+
+
+class FakeProgressGateway:
+    async def answer_progress(self, request: LeaveProgressAnswerRequest) -> str:
+        assert request.context.requestId == "leave-1"
+        assert request.context.activeTaskNames == ["主管审批"]
+        return "当前状态为审批中，正在等待主管审批。"
+
+
+def test_answers_only_from_authorized_structured_context() -> None:
+    app.dependency_overrides[get_progress_gateway] = lambda: FakeProgressGateway()
+    try:
+        response = TestClient(app).post(
+            "/v1/leave-progress/answer",
+            json={
+                "question": "我的请假到哪一步了？",
+                "timezone": "Asia/Shanghai",
+                "context": {
+                    "requestId": "leave-1",
+                    "type": "ANNUAL",
+                    "status": "PENDING",
+                    "startsAt": "2026-07-20T01:00:00Z",
+                    "endsAt": "2026-07-20T09:00:00Z",
+                    "activeTaskNames": ["主管审批"],
+                    "completedTaskNames": [],
+                    "processEnded": False,
+                    "timelineEventTypes": ["LEAVE_REQUEST_SUBMITTED"],
+                },
+            },
+        )
+    finally:
+        app.dependency_overrides.clear()
+
+    assert response.status_code == 200
+    assert response.json() == {"answer": "当前状态为审批中，正在等待主管审批。", "model": "qwen-plus"}
+    assert "processVariables" not in response.text
+
+
+def test_rejects_unknown_context_fields() -> None:
+    response = TestClient(app).post(
+        "/v1/leave-progress/answer",
+        json={
+            "question": "进度？",
+            "timezone": "Asia/Shanghai",
+            "context": {
+                "requestId": "leave-1", "type": "ANNUAL", "status": "PENDING",
+                "startsAt": "2026-07-20T01:00:00Z", "endsAt": "2026-07-20T09:00:00Z",
+                "activeTaskNames": [], "completedTaskNames": [], "processEnded": False,
+                "timelineEventTypes": [], "processVariables": {"approverId": "secret"},
+            },
+        },
+    )
+    assert response.status_code == 422

ai-service/tests/test_leave_suggestion.py

@@ -0,0 +1,46 @@
+from datetime import datetime
+
+from fastapi.testclient import TestClient
+
+from app.main import app, get_gateway
+from app.models import LeaveDraftSuggestion, LeaveDraftSuggestionRequest, LeaveType
+
+
+class FakeGateway:
+    async def suggest(self, request: LeaveDraftSuggestionRequest) -> LeaveDraftSuggestion:
+        assert request.text == "明天下午请事假四小时"
+        return LeaveDraftSuggestion(
+            type=LeaveType.PERSONAL,
+            startsAt=datetime.fromisoformat("2026-07-19T13:30:00+08:00"),
+            endsAt=datetime.fromisoformat("2026-07-19T17:30:00+08:00"),
+            reason="办理个人事务",
+            assumptions=["下午按 13:30 开始计算"],
+        )
+
+
+def test_returns_structured_suggestion_without_executing_business_action() -> None:
+    app.dependency_overrides[get_gateway] = lambda: FakeGateway()
+    try:
+        response = TestClient(app).post(
+            "/v1/leave-drafts/suggest",
+            json={"text": "明天下午请事假四小时", "timezone": "Asia/Shanghai"},
+        )
+    finally:
+        app.dependency_overrides.clear()
+
+    assert response.status_code == 200
+    body = response.json()
+    assert body["suggestion"]["type"] == "PERSONAL"
+    assert body["requiresUserConfirmation"] is True
+    assert "applicantId" not in body["suggestion"]
+
+
+def test_rejects_invalid_time_range_from_model() -> None:
+    try:
+        LeaveDraftSuggestion(
+            startsAt=datetime.fromisoformat("2026-07-19T17:30:00+08:00"),
+            endsAt=datetime.fromisoformat("2026-07-19T13:30:00+08:00"),
+        )
+        assert False, "validation should fail"
+    except ValueError:
+        pass