tiangolo.fastapi/tests/test_query_method.py

#!/usr/bin/env python3

"""
Tests for the QUERY HTTP method in FastAPI.

This test file follows the FastAPI test patterns and should be compatible
with the existing test suite.
"""

from fastapi import FastAPI, Depends
from fastapi.testclient import TestClient
from pydantic import BaseModel
from typing import List, Optional


def test_query_method_basic():
    app = FastAPI()

    @app.query("/query")
    def query_endpoint():
        return {"method": "QUERY", "message": "success"}

    client = TestClient(app)
    response = client.request("QUERY", "/query")

    assert response.status_code == 200
    assert response.json() == {"method": "QUERY", "message": "success"}


def test_query_method_with_body():
    app = FastAPI()

    class QueryData(BaseModel):
        query: str
        limit: Optional[int] = 10

    @app.query("/search")
    def search_endpoint(data: QueryData):
        return {"query": data.query, "limit": data.limit}

    client = TestClient(app)
    response = client.request(
        "QUERY", "/search", json={"query": "test search", "limit": 5}
    )

    assert response.status_code == 200
    json_data = response.json()
    assert json_data["query"] == "test search"
    assert json_data["limit"] == 5


def test_query_method_with_response_model():
    app = FastAPI()

    class QueryRequest(BaseModel):
        term: str

    class SearchResult(BaseModel):
        results: List[str]
        count: int

    @app.query("/search", response_model=SearchResult)
    def search_with_model(request: QueryRequest):
        results = [f"result_{i}_{request.term}" for i in range(3)]
        return {"results": results, "count": len(results)}

    client = TestClient(app)
    response = client.request("QUERY", "/search", json={"term": "fastapi"})

    assert response.status_code == 200
    json_data = response.json()
    assert "results" in json_data
    assert "count" in json_data
    assert json_data["count"] == 3
    assert all("fastapi" in result for result in json_data["results"])


def test_query_method_with_status_code():
    app = FastAPI()

    @app.query("/created", status_code=201)
    def created_endpoint():
        return {"status": "created"}

    client = TestClient(app)
    response = client.request("QUERY", "/created")

    assert response.status_code == 201
    assert response.json()["status"] == "created"


def test_query_method_with_dependencies():
    app = FastAPI()

    def get_current_user():
        return {"user_id": "12345", "username": "testuser"}

    @app.query("/user-query")
    def user_query_endpoint(user: dict = Depends(get_current_user)):
        return {"user": user, "method": "QUERY"}

    client = TestClient(app)
    response = client.request("QUERY", "/user-query")

    assert response.status_code == 200
    json_data = response.json()
    assert json_data["method"] == "QUERY"
    assert json_data["user"]["user_id"] == "12345"


def test_query_method_with_tags():
    app = FastAPI()

    @app.query("/tagged-query", tags=["search", "query"])
    def tagged_query():
        return {"tags": ["search", "query"]}

    client = TestClient(app)
    response = client.request("QUERY", "/tagged-query")

    assert response.status_code == 200
    assert response.json()["tags"] == ["search", "query"]


def test_query_method_openapi_schema():
    app = FastAPI()

    class QueryData(BaseModel):
        search_term: str
        filters: Optional[dict] = None

    @app.query("/openapi-query")
    def openapi_query(data: QueryData):
        return {"received": data.search_term}

    openapi_schema = app.openapi()

    # Verify the endpoint is in the schema
    assert "/openapi-query" in openapi_schema["paths"]

    # Verify QUERY method is documented
    path_item = openapi_schema["paths"]["/openapi-query"]
    assert "query" in path_item


def test_query_method_vs_post_comparison():
    """Test that QUERY behaves similarly to POST but with different method."""
    app = FastAPI()

    class RequestData(BaseModel):
        data: str

    @app.post("/post-endpoint")
    def post_endpoint(request: RequestData):
        return {"method": "POST", "data": request.data}

    @app.query("/query-endpoint")
    def query_endpoint(request: RequestData):
        return {"method": "QUERY", "data": request.data}

    client = TestClient(app)

    test_data = {"data": "test content"}

    post_response = client.post("/post-endpoint", json=test_data)
    query_response = client.request("QUERY", "/query-endpoint", json=test_data)

    assert post_response.status_code == 200
    assert query_response.status_code == 200

    post_json = post_response.json()
    query_json = query_response.json()

    # Both should return same data, just different method indication
    assert post_json["data"] == query_json["data"] == "test content"
    assert post_json["method"] == "POST"
    assert query_json["method"] == "QUERY"


def test_query_method_with_path_parameters():
    app = FastAPI()

    class QueryFilter(BaseModel):
        status: str
        limit: int

    @app.query("/items/{item_id}")
    def query_item(item_id: int, filters: QueryFilter):
        return {"item_id": item_id, "filters": filters.model_dump()}

    client = TestClient(app)
    response = client.request(
        "QUERY", "/items/123", json={"status": "active", "limit": 10}
    )

    assert response.status_code == 200
    json_data = response.json()
    assert json_data["item_id"] == 123
    assert json_data["filters"]["status"] == "active"
    assert json_data["filters"]["limit"] == 10


def test_query_method_error_handling():
    app = FastAPI()

    class QueryData(BaseModel):
        required_field: str

    @app.query("/error-test")
    def error_test(data: QueryData):
        return {"received": data.required_field}

    client = TestClient(app)

    # Test missing required field
    response = client.request("QUERY", "/error-test", json={})
    assert response.status_code == 422  # Validation error

    # Test valid request
    response = client.request("QUERY", "/error-test", json={"required_field": "value"})
    assert response.status_code == 200
    assert response.json()["received"] == "value"