iTi-Flask/tests/test_http_utils.py

"""
HTTP 响应工具测试
"""

import pytest
from iti.applications import create_app
from iti.applications.common.utils import (
    success,
    fail,
    page,
    pagination_builder,
    PaginationSchema,
)


@pytest.fixture
def app():
    """创建测试应用"""
    return create_app("test")


@pytest.fixture
def client(app):
    """创建测试客户端"""
    return app.test_client()


class TestSuccessFunction:
    """测试 success() 函数"""

    def test_success_default(self):
        """测试默认参数"""
        result = success()

        assert result["code"] == 200
        assert result["message"] == "成功"
        assert result["data"] is None

    def test_success_with_data(self):
        """测试带数据"""
        data = {"id": 1, "name": "test"}
        result = success(data)

        assert result["code"] == 200
        assert result["message"] == "成功"
        assert result["data"] == data

    def test_success_with_custom_message(self):
        """测试自定义消息"""
        result = success({"id": 1}, message="查询成功")

        assert result["code"] == 200
        assert result["message"] == "查询成功"
        assert result["data"]["id"] == 1

    def test_success_with_custom_code(self):
        """测试自定义状态码"""
        result = success({"id": 1}, message="创建成功", code=201)

        assert result["code"] == 201
        assert result["message"] == "创建成功"

    def test_success_with_list(self):
        """测试列表数据"""
        data = [{"id": 1}, {"id": 2}]
        result = success(data)

        assert result["code"] == 200
        assert isinstance(result["data"], list)
        assert len(result["data"]) == 2


class TestFailFunction:
    """测试 fail() 函数"""

    def test_fail_default(self):
        """测试默认参数"""
        result = fail()

        assert result["code"] == 500
        assert result["message"] == "操作失败"
        assert result["data"] is None

    def test_fail_with_custom_message(self):
        """测试自定义错误消息"""
        result = fail("用户不存在")

        assert result["code"] == 500
        assert result["message"] == "用户不存在"
        assert result["data"] is None

    def test_fail_with_custom_code(self):
        """测试自定义错误码"""
        result = fail("参数错误", code=400)

        assert result["code"] == 400
        assert result["message"] == "参数错误"

    def test_fail_with_data(self):
        """测试带额外数据"""
        errors = {"username": ["必填项"], "email": ["格式错误"]}
        result = fail("验证失败", code=422, data=errors)

        assert result["code"] == 422
        assert result["message"] == "验证失败"
        assert result["data"] == errors

    def test_fail_returns_dict(self):
        """测试返回字典而非元组"""
        result = fail("错误", code=404)

        # 确保返回的是字典，不是元组
        assert isinstance(result, dict)
        assert "code" in result
        assert "message" in result
        assert "data" in result


class TestPaginationBuilder:
    """测试 pagination_builder() 函数"""

    def test_manual_mode_basic(self):
        """测试手动模式基础功能"""
        result = pagination_builder(None, page=1, size=10, total=100)

        assert result["page"] == 1
        assert result["size"] == 10
        assert result["pages"] == 10  # ceil(100/10)
        assert result["total"] == 100

    def test_manual_mode_auto_calculate_pages(self):
        """测试自动计算总页数"""
        result = pagination_builder(None, page=1, size=20, total=95)

        assert result["pages"] == 5  # ceil(95/20) = 5

    def test_manual_mode_with_explicit_pages(self):
        """测试显式指定总页数"""
        result = pagination_builder(None, page=1, size=10, total=100, pages=8)

        assert result["pages"] == 8

    def test_manual_mode_zero_total(self):
        """测试总数为 0"""
        result = pagination_builder(None, page=1, size=10, total=0)

        assert result["pages"] == 0
        assert result["total"] == 0

    def test_manual_mode_urls_are_none_outside_request(self):
        """测试在请求上下文外 URL 为 None"""
        result = pagination_builder(None, page=1, size=10, total=100)

        assert result["current"] is None
        assert result["next"] is None
        assert result["prev"] is None
        assert result["first"] is None
        assert result["last"] is None

    def test_auto_mode_with_mock_pagination(self):
        """测试自动模式（使用模拟的 Pagination 对象）"""

        # 创建模拟的 Pagination 对象
        class MockPagination:
            page = 2
            per_page = 10
            pages = 10
            total = 100
            has_prev = True
            has_next = True
            prev_num = 1
            next_num = 3

        mock_pagination = MockPagination()
        result = pagination_builder(mock_pagination)

        assert result["page"] == 2
        assert result["size"] == 10  # per_page → size
        assert result["pages"] == 10
        assert result["total"] == 100


class TestPageFunction:
    """测试 page() 函数"""

    def test_page_with_list_and_dict(self):
        """测试列表 + 字典分页信息"""
        items = [{"id": 1}, {"id": 2}]
        pagination_info = pagination_builder(None, page=1, size=10, total=50)

        result = page(items, pagination_info)

        assert result["code"] == 200
        assert result["message"] == "成功"
        assert result["data"]["items"] == items
        assert result["data"]["page"]["page"] == 1
        assert result["data"]["page"]["total"] == 50

    def test_page_with_custom_message(self):
        """测试自定义消息"""
        items = [{"id": 1}]
        pagination_info = pagination_builder(None, page=1, size=10, total=10)

        result = page(items, pagination_info, message="获取列表成功")

        assert result["message"] == "获取列表成功"

    def test_page_with_custom_code(self):
        """测试自定义状态码"""
        items = [{"id": 1}]
        pagination_info = pagination_builder(None, page=1, size=10, total=10)

        result = page(items, pagination_info, code=201)

        assert result["code"] == 201

    def test_page_with_mock_pagination_object(self):
        """测试直接传入 Pagination 对象"""

        class MockPagination:
            items = [{"id": 1}, {"id": 2}, {"id": 3}]
            page = 1
            per_page = 10
            pages = 5
            total = 50
            has_prev = False
            has_next = True
            prev_num = None
            next_num = 2

        mock_pagination = MockPagination()
        result = page(mock_pagination)

        assert result["code"] == 200
        assert len(result["data"]["items"]) == 3
        assert result["data"]["page"]["page"] == 1
        assert result["data"]["page"]["size"] == 10
        assert result["data"]["page"]["total"] == 50

    def test_page_with_items_and_pagination_object(self):
        """测试传入数据列表 + Pagination 对象"""

        class MockPagination:
            items = [{"id": 1}, {"id": 2}]
            page = 2
            per_page = 20
            pages = 3
            total = 60
            has_prev = True
            has_next = True
            prev_num = 1
            next_num = 3

        mock_pagination = MockPagination()
        custom_items = [{"id": 10}, {"id": 20}]  # 使用自定义数据（如序列化后的）

        result = page(custom_items, mock_pagination)

        assert result["data"]["items"] == custom_items  # 使用传入的 items
        assert result["data"]["page"]["page"] == 2
        assert result["data"]["page"]["size"] == 20

    def test_page_empty_items(self):
        """测试空数据列表"""
        items = []
        pagination_info = pagination_builder(None, page=1, size=10, total=0)

        result = page(items, pagination_info)

        assert result["data"]["items"] == []
        assert result["data"]["page"]["total"] == 0
        assert result["data"]["page"]["pages"] == 0


class TestSchemaDefinitions:
    """测试 Schema 定义"""

    def test_pagination_schema_exists(self):
        """测试 PaginationSchema 存在"""
        assert PaginationSchema is not None

        # 检查字段
        schema = PaginationSchema()
        assert "page" in schema.fields
        assert "size" in schema.fields
        assert "pages" in schema.fields
        assert "total" in schema.fields


class TestIntegrationWithFlaskApp:
    """测试与 Flask 应用集成"""

    def test_success_in_route(self, client):
        """测试 success() 在路由中使用"""
        response = client.get("/test/success")

        assert response.status_code == 200
        data = response.get_json()

        assert data["code"] == 200
        assert data["message"] == "操作成功"
        assert "message" in data["data"]

    def test_fail_in_route(self, client):
        """测试 fail() 在路由中使用"""
        response = client.get("/test/fail")

        # 确保 HTTP 状态码是 200（业务错误）
        assert response.status_code == 200
        data = response.get_json()

        assert data["code"] == 400
        assert data["message"] == "这是一个错误示例"

    def test_page_in_route(self, client):
        """测试 page() 在路由中使用"""
        response = client.get("/test/page")

        assert response.status_code == 200
        data = response.get_json()

        assert data["code"] == 200
        assert data["message"] == "分页测试成功"
        assert "items" in data["data"]
        assert "page" in data["data"]
        assert len(data["data"]["items"]) == 3
        assert data["data"]["page"]["page"] == 1
        assert data["data"]["page"]["size"] == 10
        assert data["data"]["page"]["total"] == 30

    def test_index_with_schema(self, client):
        """测试首页使用 Schema 验证"""
        response = client.get("/")

        assert response.status_code == 200
        data = response.get_json()

        assert data["code"] == 200
        assert data["message"] == "成功"
        assert "id" in data["data"]
        assert "name" in data["data"]
        # 验证 Schema 过滤了无关字段（如果有的话）


class TestEdgeCases:
    """测试边界情况"""

    def test_pagination_builder_with_fractional_pages(self):
        """测试非整数页数计算"""
        result = pagination_builder(None, page=1, size=7, total=15)

        # ceil(15/7) = 3
        assert result["pages"] == 3

    def test_pagination_builder_exact_pages(self):
        """测试整数页数"""
        result = pagination_builder(None, page=1, size=10, total=100)

        assert result["pages"] == 10

    def test_success_with_none_data(self):
        """测试 data 为 None"""
        result = success(None, message="无数据")

        assert result["data"] is None
        assert result["message"] == "无数据"

    def test_fail_with_empty_string_message(self):
        """测试空字符串消息"""
        result = fail("", code=400)

        assert result["message"] == ""
        assert result["code"] == 400

    def test_page_with_large_total(self):
        """测试大数据量分页"""
        items = [{"id": i} for i in range(100)]
        pagination_info = pagination_builder(None, page=1, size=100, total=1000000)

        result = page(items, pagination_info)

        assert result["data"]["page"]["total"] == 1000000
        assert result["data"]["page"]["pages"] == 10000