这是我在 XUnit 中的测试方法。
[Fact]
public async Task AddCampaign_ReturnBadRequestWhenDateIsInvalid()
{
var client = _factory.CreateClient();
string title = string.Format("Test Add Campaign {0}", Guid.NewGuid());
var campaignAddDto = new CampaignDTORequest
{
Title = title
};
var encodedContent = new StringContent(JsonConvert.SerializeObject(campaignAddDto), Encoding.UTF8, "application/json");
var response = await client.PostAsync("/api/Campaign/add", encodedContent);
var responseString = await response.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject<CampaignDTOResponse>(responseString);
Assert.False(response.IsSuccessStatusCode);
Assert.ThrowsAsync<ArgumentNullException>(()=> client.PostAsync("/api/Campaign/add", encodedContent));
}
第一个断言有效。我坚持第二个断言。如何同时声明异常类型 (ArgumentNullException) 及其异常消息?
这是服务方式
public async Task<Campaign> AddCampaignAsync(Campaign campaign)
{
if (campaign.StartDate.Equals(DateTime.MinValue)) {
throw new ArgumentNullException("Start Date cannot be null or empty.");
}
await _context.Campaigns.AddAsync(campaign);
await _context.SaveChangesAsync();
return campaign;
}
根据雷洋的线索更新。
var exceptionDetails = Assert.ThrowsAsync<ArgumentNullException>(() => client.PostAsync("/api/Campaign/add", encodedContent));
Assert.Equal("Start Date cannot be null or empty.", exceptionDetails.Result.Message);
但是还是不行。
<块引用>System.AggregateException:发生一个或多个错误。 (Assert.Throws() 失败 预期:typeof(System.ArgumentNullException) 实际:(没有抛出异常))
尝试了 Dai 的解决方案,但仍然出错。
<块引用>Assert.Throws() Failure
Expected: typeof(System.ArgumentNullException)
Actual: (No exception was thrown)
这是我的 API 方法。
public async Task<ActionResult<CampaignDTOResponse>> AddCampaign([FromBody] CampaignDTORequest newCampaign)
{
try
{
var campaign = _mapper.Map<Campaign>(newCampaign);
campaign = await _campaignService.AddCampaignAsync(campaign);
var campaignDtoResponse = _mapper.Map<CampaignDTOResponse>(campaign);
return CreatedAtAction(nameof(GetCampaignById), new { id = campaignDtoResponse.Id }, campaignDtoResponse);
}
catch (Exception ex)
{
_logger.LogError(0, ex, ex.Message);
return Problem(ex.Message);
}
}
更新:我将检查从服务转移到 api。
if (newCampaign.StartDate.Equals(DateTime.MinValue))
{
return BadRequest("Start Date cannot be null or empty.");
}
我像下面那样断言它们。
Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
Assert.Equal("Start Date cannot be null or empty.", responseString);
答案 0 :(得分:5)
Assert.ThrowsAsync
is still an async Task
method,因此您需要 await
以确保任务继续(执行实际断言)可以正确运行:
[Fact]
public async Task AddCampaign_Return_bad_request_when_date_is_invalid()
{
[...]
Assert.False(response.IsSuccessStatusCode);
await Assert.ThrowsAsync<ArgumentNullException>(()=> client.PostAsync("/api/Campaign/add", encodedContent));
}
ArgumentNullException
来表示 HTTP 400 错误请求响应。
ArgumentException
类及其子类(ArgumentNullException
、ArgumentOutOfRangeException
等)应该仅用于指示失败的前提条件 - 而不是失败的后置条件或内部错误(使用 {{1 }})。InvalidOperationException
,这会更有用。ApiException<TResponse>
声明的任何内容)的歧视联合。答案 1 :(得分:0)
您可以使用 ThrowsAsync
捕获异常并对其进行断言:
// Act
var exception = await Assert.ThrowsAsync<ArgumentNullException>(()=> client.PostAsync("/api/Campaign/add", encodedContent));
// Assert
Assert.Equal(exception.Message, "message to compare");
或
// Act
Action action = async () => await client.PostAsync("/api/Campaign/add", encodedContent);
var ex = Record.Exception(action);
// Assert
Assert.NotNull(ex);
Assert.IsType<ArgumentNullException>(ex);