public async Task <EthereumTransactionSearchResult> Search(
EthereumTransactionSearchRequest searchRequest)
{
var result = new EthereumTransactionSearchResult();
IEnumerable <EthereumTransaction> transactions;
try
{
transactions = await _ethereumService.GetTransactionsByBlockNumberAsync(
searchRequest.BlockNumberNumerical);
}
catch
{
// if we got here, we possibly encountered a transient error
result.TransientError = true;
return(result);
}
// filter transactions down if they are associated with an address
var addressToMatch = searchRequest.Address.Trim();
transactions = transactions
.Where(t => t.To == addressToMatch || t.From == addressToMatch);
// map transactions to DTO model
foreach (var transaction in transactions)
{
var dtoTransaction = _mapper.Map(transaction);
result.Transactions.Add(dtoTransaction);
}
return(result);
}
public async Task TransactionSearch_EmptySearchResult_ShouldSucceed()
{
var mapper = new EthereumTransactionMapper();
var ethereumServiceMock = new Mock <IEthereumService>();
// mock returning an empty list
ethereumServiceMock.Setup(s => s.GetTransactionsByBlockNumberAsync(It.IsAny <long>()))
.ReturnsAsync(new List <EthereumTransaction>());
var action = new EthereumTransactionSearchActionHandler(ethereumServiceMock.Object, mapper);
var searchRequest = new EthereumTransactionSearchRequest
{
Address = "0x12345",
BlockNumber = "12345"
};
// act
var actual = await action.Search(searchRequest);
// assert
Assert.NotNull(actual);
Assert.Empty(actual.Transactions);
Assert.False(actual.TransientError);
}
public async Task TransactionSearch_ShouldMatchOneTransaction_UsingToField(string addressToMatch)
{
var mapper = new EthereumTransactionMapper();
var ethereumServiceMock = new Mock <IEthereumService>();
// mock returning a list of transactions
var transactions = TestFactory.MakeMockTransactions();
ethereumServiceMock.Setup(s => s.GetTransactionsByBlockNumberAsync(It.IsAny <long>()))
.ReturnsAsync(transactions);
var action = new EthereumTransactionSearchActionHandler(ethereumServiceMock.Object, mapper);
var searchRequest = new EthereumTransactionSearchRequest
{
Address = addressToMatch,
BlockNumber = "0x8b99c9"
};
// act
var actual = await action.Search(searchRequest);
// assert
Assert.NotNull(actual);
Assert.Single(actual.Transactions);
Assert.False(actual.TransientError);
}
public async Task TransactionSearch_ThrowException_ShouldReturnEmpty()
{
var mapper = new EthereumTransactionMapper();
var ethereumServiceMock = new Mock <IEthereumService>();
// mock returning a list of transactions
var transactions = TestFactory.MakeMockTransactions();
ethereumServiceMock.Setup(s => s.GetTransactionsByBlockNumberAsync(It.IsAny <long>()))
.ThrowsAsync(new HttpRequestException());
var action = new EthereumTransactionSearchActionHandler(ethereumServiceMock.Object, mapper);
var searchRequest = new EthereumTransactionSearchRequest
{
Address = "invalidAddress",
BlockNumber = "0x8b99c9"
};
// act
var actual = await action.Search(searchRequest);
// assert
Assert.NotNull(actual);
Assert.Empty(actual.Transactions);
Assert.True(actual.TransientError);
}