[英]How to create a unit test for an IActionResult controller action which returns decimal?
[英]Unit Test Task<IActionResult>
我正在开发.Net Core Web API应用程序。 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 });
}
我想写一个测试,断言我确实得到了200
OK的结果。
我尝试过以下方法:
[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)
}
但是我在转换为OkObjectResult
的行上出现错误。 它说我无法将类型Task<IActionResult>
转换为OkObjectResult
调用异步方法时需要使用await
:
var getArtistsResult = await artistsController.GetArtists();
这反过来使您的测试方法async Task
:
[TestMethod]
public async Task GetArtists_ReturnsOKStatusCode()
{
...
}
你需要接收函数GetArtists()(不是Task)的结果,如下所示:
var getArtistsResult = artistsController.GetArtists().Result;
然后你可以把它强制转换为OkObjectResult。
或者您可以尝试更改您的测试:
[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>();
}
我使用了一些来自FluentAssetions lib的扩展方法,它非常有用。
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