public void Default_parser_is_replaced()
{
const string fakeUrl = "https://api.tfl.gov.uk/fake";
const string fakeJsonResponse = "fake json response";
const string fakeRoadId = "fakeRoadId";
const string fakeDisplayName = "fake display name";
const string fakeSeverity = "fake severity";
const string fakeDescription = "fake description";
string FakeResourceReader(Uri _) => fakeJsonResponse;
var fakeRoadStatus = new RoadStatus(fakeRoadId, fakeDisplayName, fakeSeverity, fakeDescription);
RoadStatusResult FakeParser(string _) => new RoadStatusResult(fakeRoadStatus);
var reader =
new RoadStatusReader(fakeUrl)
.ParseWith(FakeParser)
.GetWith(FakeResourceReader);
var result = reader.GetResult(fakeRoadId);
Assert.Equal(ExitCodes.Success, result.Status);
Assert.Equal(fakeRoadId, result.Road.Id);
Assert.Equal(fakeDisplayName, result.Road.DisplayName);
Assert.Equal(fakeSeverity, result.Road.StatusSeverity);
Assert.Equal(fakeDescription, result.Road.StatusSeverityDescription);
}
public void Random_error_throws_handled_exception()
{
const string fakeUrl = "https://api.tfl.gov.uk/fake";
const string fakeRoadId = "fakeRoadId";
const string fakeErrorMessage = "fake error message";
string FakeResourceReader(Uri _) => throw new Exception(fakeErrorMessage);
var reader =
new RoadStatusReader(fakeUrl)
.GetWith(FakeResourceReader);
var result = reader.GetResult(fakeRoadId);
Assert.Equal(ExitCodes.Unexpected, result.Status);
Assert.Equal(fakeErrorMessage, result.ErrorMessage);
Assert.Null(result.Road?.Id);
}
public void Road_not_found_throws_handled_web_exception()
{
const string fakeUrl = "https://api.tfl.gov.uk/fake";
const string fakeRoadId = "fakeRoadId";
const string fakeErrorMessage = "fake error message";
string FakeResourceReader(Uri _) => throw new WebException(fakeErrorMessage);
HttpStatusCode?GetHttpStatusCode(WebException _) => HttpStatusCode.NotFound;
RoadStatusReader.WebExceptionToHttpStatusCode = GetHttpStatusCode;
var reader =
new RoadStatusReader(fakeUrl)
.GetWith(FakeResourceReader);
var result = reader.GetResult(fakeRoadId);
Assert.Equal(ExitCodes.InvalidRoad, result.Status);
Assert.Equal(fakeErrorMessage, result.ErrorMessage);
Assert.Equal(fakeRoadId, result.Road.Id);
}