Xunit - 使用列表或对象作为参数的单元测试

Question

我目前正在对 REST API 进行单元测试。当我有一个列表或自定义对象作为参数时，我遇到了问题。

第一个控制器方法有多个参数，包括字符串列表。我不知道如何添加列表的内联数据中的值。

private static List<string> TestData()
{
    var testcase = new List<string>();
    testcase.Add("DEV");
    testcase.Add("IT");
    return testcase;
}

[Theory]
[InlineData(0, 10, TestData, "", 3)]
public async Task TestGetPersonItems(int pageNumber, int pageSize, List<string> departments, string filterText, int resultCount)
{
    using (API_DB_Context context = new API_DB_Context(_options))
    {
        // Arrange
        //List<string> departments = new List<string>();
        //departments.Add("DEV");
        List<string> locations = new List<string>();

        PersonenController controller = new PersonenController(context, _mapper);

        // Act
        var controllerResponse = await controller.Get(pageNumber, pageSize, departments, locations, filterText);

        // Assert
        if (resultCount > 0)
        {
            var objectResult = Assert.IsAssignableFrom<ObjectResult>(controllerResponse);
            ICollection<PersonDTO> model = Assert.IsAssignableFrom<ICollection<PersonDTO>>(objectResult.Value);
            Assert.Equal(resultCount, model.Count);
        }
        else
        {
            Assert.IsType<NotFoundObjectResult>(controllerResponse);
            var objectResponse = controllerResponse as ObjectResult;
            Assert.Equal(404, objectResponse.StatusCode);
        }
    }
}

---

对于第二个控制器方法，我有一个自定义对象和一个整数作为参数。当我开始第二个测试时，出现错误“无法找到名为‘SearchData’的公共静态成员（属性、字段或方法）”

public static IEnumerable<object[]> SearchData()
{
    yield return new object[] {
        new SearchDTO
        {
          searchText = "",
          page = 0,
          pageSize = 10
        }
    };
}

[Theory]
[MemberData(nameof(SearchData), 3)]
public async Task TestSearchPersonItems(SearchDTO searchDTO, int resultCount)
{
    using (API_DB_Context context = new API_DB_Context(_options))
    {
        // Arrange
        PersonenController controller = new PersonenController(context, _mapper);

        // Act
        var controllerResponse = await controller.SearchPersons(searchDTO);

        // Assert
        if (resultCount > 0)
        {
            var objectResult = Assert.IsAssignableFrom<ObjectResult>(controllerResponse);
            ICollection<PersonDTO> model = Assert.IsAssignableFrom<ICollection<PersonDTO>>(objectResult.Value);
            Assert.Equal(resultCount, model.Count);
        }
        else
        {
            Assert.IsType<NotFoundObjectResult>(controllerResponse);
            var objectResponse = controllerResponse as ObjectResult;
            Assert.Equal(404, objectResponse.StatusCode);
        }
    }
}

我必须做哪些不同的事情或者我可以做得更好？

先感谢您！

Answer 1

对于第一个单元测试：

    public static IEnumerable<object[]> TestGetPersonItemsData =>
        new List<object[]>
        {
            new object[] { 0, 10, new List<string> { "DEV", "IT" }, "", 3 }
        };

    [Theory]
    [MemberData(nameof(TestGetPersonItemsData))]
    public async Task TestGetPersonItems(int pageNumber, int pageSize, List<string> departments, string filterText, int resultCount)
    {
        // Test
    }

第二个这样写：

    public static IEnumerable<object[]> TestSearchPersonItemsData =>
        new List<object[]>
        {
            new object[] { new SearchDTO { searchText = "", page = 0, pageSize = 10 }, 3 },
            new object[] { new SearchDTO { searchText = "test", page = 1, pageSize = 10 }, 1 }
        };

    [Theory]
    [MemberData(nameof(TestSearchPersonItemsData))]
    public async Task TestSearchPersonItems(SearchDTO searchDTO, int resultCount)
    {
        // Test
    }