public async Task OnetimeSetup() { base.OnetimeSetupShared(); _expected = new GetTransactionsResponseV1(); Service.Setup(s => s.GetTransactionsAsync(It.IsAny <GetTransactionsRequestV1>(), It.IsAny <CancellationToken>())) .ReturnsAsync(_expected); _result = await ClassInTest.GetTransactions(_input = new GetTransactionsRequestV1(), CancellationToken.None); }