public static ProblemDetails ShouldNotBeNull(this ProblemDetails problemDetails, HttpStatusCode statusCode)
{
problemDetails.Should().NotBeNull();
problemDetails.Status.Should().Be((int)statusCode);
problemDetails.Title.Should().NotBeNull();
problemDetails.Detail.Should().NotBeNull();
problemDetails.Type.Should().NotBeNull();
return(problemDetails);
}
public static ProblemDetails ShouldNotBeNull(this ProblemDetails problemDetails, HttpStatusCode statusCode)
{
_ = problemDetails ?? throw new ArgumentNullException(nameof(problemDetails));
problemDetails.Should().NotBeNull();
problemDetails.Status.Should().Be((int)statusCode);
problemDetails.Title.Should().NotBeNull();
problemDetails.Detail.Should().NotBeNull();
problemDetails.Type.Should().NotBeNull();
return(problemDetails);
}
public async Task HandleException_WhenApiThrowsException_MustConvertExceptionToInstanceOfProblemDetailsClass()
{
// Arrange
var generateJwtModel = new GenerateJwtModel
{
UserName = $"test-user--{Guid.NewGuid():N}",
Password = $"test-password--{Guid.NewGuid():N}",
};
using var testWebApplicationFactory =
new TestWebApplicationFactory(MethodBase.GetCurrentMethod()?.DeclaringType?.Name)
.WithMockServices(containerBuilder =>
{
// Ensure a mock implementation will be injected whenever a service requires an instance of the
// IGenerateJwtFlow interface.
containerBuilder
.RegisterType <GenerateJwtFlowWhichThrowsException>()
.As <IGenerateJwtFlow>()
.InstancePerLifetimeScope();
})
.WithWebHostBuilder(webHostBuilder =>
{
webHostBuilder.ConfigureAppConfiguration(configurationBuilder =>
{
configurationBuilder.AddInMemoryCollection(new[]
{
// Ensure database is not migrated, since having an up-to-date RDBMS will just complicate
// this test method.
new KeyValuePair <string, string>("MigrateDatabase", bool.FalseString)
});
});
});
using HttpClient httpClient = testWebApplicationFactory.CreateClient();
// Act
HttpResponseMessage httpResponseMessage = await httpClient.PostAsJsonAsync("api/jwt", generateJwtModel);
// Assert
using (new AssertionScope())
{
const HttpStatusCode expectedStatusCode = HttpStatusCode.InternalServerError;
httpResponseMessage.IsSuccessStatusCode
.Should().BeFalse("the endpoint was supposed to throw a hard-coded exception");
httpResponseMessage.StatusCode.Should().Be(expectedStatusCode,
$"the hard-coded exception was mapped to HTTP status {expectedStatusCode}");
byte[] problemDetailsAsBytes = await httpResponseMessage.Content.ReadAsByteArrayAsync();
await using var memoryStream = new MemoryStream(problemDetailsAsBytes);
// Must use System.Text.Json.JsonSerializer instead of Newtonsoft.Json.JsonSerializer to ensure
// ProblemDetails.Extensions property is correctly deserialized and does not end up as an empty
// dictionary.
ProblemDetails problemDetails = await JsonSerializer.DeserializeAsync <ProblemDetails>(memoryStream);
problemDetails.Should().NotBeNull("application must handle any exception");
// ReSharper disable once PossibleNullReferenceException
problemDetails.Extensions.Should().NotBeNull("problem details must contain extra info");
problemDetails.Extensions.Should().NotContainKey("errorData", "error data must not be present");
problemDetails.Extensions.Should().ContainKey("errorKey", "error key must be present");
problemDetails.Extensions.Should().ContainKey("errorId", "error id must be present");
Guid.TryParse(problemDetails.Extensions["errorId"].ToString(), out Guid _)
.Should().BeTrue("error id is a GUID");
}
}
