public void AddressesGatewatShouldThrowAnErrorWhenAPICallIsConsideredInvalid()
{
// arrange
var contextResponse = Randomm.AddressesAPIContextResponse(400);
_mockAddressesApiContext.Setup(c => c.GetAddressesRequest(It.IsAny <string>())).Returns(contextResponse);
// act
Action gatewayCall = () => _classUnderTest.GetPostcodeCoordinates(It.IsAny <string>());
// assert
gatewayCall.Should().Throw <BadAPICallException>().And.Message.Should().NotBeEmpty();
}
public void AddressGatewayShouldReturnNullCoordinatesWhenNoAddressesForAGivenPostcodeWereFound()
{
// arrange
var contextResponse = Randomm.AddressesAPIContextResponse(200);
_mockAddressesApiContext.Setup(c => c.GetAddressesRequest(It.IsAny <string>())).Returns(contextResponse);
// act
var gatewayResponse = _classUnderTest.GetPostcodeCoordinates(It.IsAny <string>());
// assert
gatewayResponse.Should().Be(null);
}
[TestCase(TestName = "Given Addresses API context's GetAddressesRequest method is called, When internal server error response is returned, Then the AddressesGateway throws APICallInternalException.")] // TODO: test exception message
public void AddressesGatewayShouldThrowAnErrorWhenAPICallReturnInternalFailure()
{
// arrange
var contextResponse = Randomm.AddressesAPIContextResponse(500);
_mockAddressesApiContext.Setup(c => c.GetAddressesRequest(It.IsAny <string>())).Returns(contextResponse);
// act
Action gatewayCall = () => _classUnderTest.GetPostcodeCoordinates(It.IsAny <string>());
//assert
gatewayCall.Should().Throw <APICallInternalException>();
}
public void Success()
{
// arrange
var expectedCoordinates = Randomm.Coordinates();
var contextResponse = Randomm.AddressesAPIContextResponse(200, expectedCoordinates);
_mockAddressesApiContext.Setup(c => c.GetAddressesRequest(It.IsAny <string>())).Returns(contextResponse);
// act
var gatewayResponse = _classUnderTest.GetPostcodeCoordinates(It.IsAny <string>());
// assert
gatewayResponse.Should().BeEquivalentTo(expectedCoordinates);
}
public void AddressesGatewayShouldCallAddressesContextWithGivenPostcode()
{
// rubbish arrange
var irrelevantResponse = Randomm.AddressesAPIContextResponse(200);
_mockAddressesApiContext.Setup(c => c.GetAddressesRequest(It.IsAny <string>())).Returns(irrelevantResponse);
// arrange
var postcode = Randomm.Postcode();
// act
_classUnderTest.GetPostcodeCoordinates(postcode);
// assert
_mockAddressesApiContext.Verify(c => c.GetAddressesRequest(It.Is <string>(p => p == postcode)), Times.Once);
}
public void AddressesGatewayShouldThrowAnErrorWhenAPICallReturnsUnexpectedSchema(int statusCode) // if anything about the Addresses API changes, ResponseSchemaNotRecognisedException //TODO: should contain api name
{
// arrange
var contextResponse = Randomm.AddressesAPIContextResponse(statusCode == 9000 ? 400 : statusCode);
switch (statusCode)
{
case 200:
contextResponse.JsonContent =
contextResponse.JsonContent.Replace("Data", Randomm.Word()
, StringComparison.OrdinalIgnoreCase);
break;
case 400:
contextResponse.JsonContent =
contextResponse.JsonContent.Replace("validationErrors", Randomm.Word()
, StringComparison.OrdinalIgnoreCase);
break;
case 500:
contextResponse.JsonContent =
contextResponse.JsonContent.Replace("Errors", Randomm.Word()
, StringComparison.OrdinalIgnoreCase);
break;
default:
contextResponse.JsonContent =
contextResponse.JsonContent.Replace("error", Randomm.Word()
, StringComparison.OrdinalIgnoreCase);
break;
}
_mockAddressesApiContext.Setup(c => c.GetAddressesRequest(It.IsAny <string>())).Returns(contextResponse);
// act
Action gatewayCall = () => _classUnderTest.GetPostcodeCoordinates(It.IsAny <string>());
// assert
gatewayCall.Should().Throw <ResponseSchemaNotRecognisedException>();
}