[英]How to create a unit test for an IActionResult controller action which returns decimal?
[英]Unit Test Task<IActionResult>
我正在開發.Net Core Web API應用程序。 我的控制器上有以下方法:
[HttpGet]
public async Task<IActionResult> GetArtists()
{
var permissions = await _permissionsService.GetPermissionsAsync(HttpContext);
var artists = _artistsService.GetAllArtists(permissions.UserId, permissions.IsAdministrator);
return Ok( new { artists });
}
我想寫一個測試,斷言我確實得到了200
OK的結果。
我嘗試過以下方法:
[TestMethod]
public void GetArtists_ReturnsOKStatusCode()
{
// arrange
var artistsController = new ArtistsController(_mockPermissionsService.Object, _mockArtistsService.Object, _mockLogger.Object);
// act
var getArtistsResult = artistsController.GetArtists();
var okResult = getArtistsResult as OkObjectResult;
Assert.IsInstanceOfType(okResult, OkObjectResult)
}
但是我在轉換為OkObjectResult
的行上出現錯誤。 它說我無法將類型Task<IActionResult>
轉換為OkObjectResult
調用異步方法時需要使用await
:
var getArtistsResult = await artistsController.GetArtists();
這反過來使您的測試方法async Task
:
[TestMethod]
public async Task GetArtists_ReturnsOKStatusCode()
{
...
}
你需要接收函數GetArtists()(不是Task)的結果,如下所示:
var getArtistsResult = artistsController.GetArtists().Result;
然后你可以把它強制轉換為OkObjectResult。
或者您可以嘗試更改您的測試:
[TestMethod]
public async Task GetArtists_ReturnsOKStatusCode()
{
// arrange
var artistsController = new ArtistsController(_mockPermissionsService.Object, _mockArtistsService.Object, _mockLogger.Object);
// act
var getArtistsResult = await artistsController.GetArtists();
var okObjectResult = settings.Should().BeOfType<OkObjectResult>().Subject;
var result = okObjectResult.Value.Should().BeAssignableTo<SomeType>();
}
我使用了一些來自FluentAssetions lib的擴展方法,它非常有用。
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