public async Task QueryAsync_WhenNoBudgetAccountCollectionWasReturnedFromAccountingRepository_ReturnsNotNull()
        {
            QueryHandler sut = CreateSut(false);

            IGetBudgetAccountCollectionQuery query = CreateQuery();
            IBudgetAccountCollection result = await sut.QueryAsync(query);

            Assert.That(result, Is.Not.Null);
        }
        public async Task QueryAsync_WhenCalled_AssertStatusDateWasCalledOnGetBudgetAccountCollectionQuery()
        {
            QueryHandler sut = CreateSut();

            Mock<IGetBudgetAccountCollectionQuery> queryMock = CreateQueryMock();
            await sut.QueryAsync(queryMock.Object);

            queryMock.Verify(m => m.StatusDate, Times.Exactly(2));
        }
        public async Task QueryAsync_WhenCalled_AssertAccountingNumberWasCalledOnGetBudgetAccountCollectionQuery()
        {
            QueryHandler sut = CreateSut();

            Mock<IGetBudgetAccountCollectionQuery> queryMock = CreateQueryMock();
            await sut.QueryAsync(queryMock.Object);

            queryMock.Verify(m => m.AccountingNumber, Times.Once);
        }
        public async Task QueryAsync_WhenNoBudgetAccountCollectionWasReturnedFromAccountingRepository_ReturnsEmptyBudgetAccountCollection()
        {
            QueryHandler sut = CreateSut(false);

            IGetBudgetAccountCollectionQuery query = CreateQuery();
            IBudgetAccountCollection result = await sut.QueryAsync(query);

            Assert.That(result.Count(), Is.EqualTo(0));
        }
        public async Task QueryAsync_WhenNoBudgetAccountCollectionWasReturnedFromAccountingRepository_ReturnsBudgetAccountCollectionWhereStatusDateIsEqualToStatusDateFromGetBudgetAccountCollectionQuery()
        {
            QueryHandler sut = CreateSut(false);

            DateTime statusDate = _fixture.Create<DateTime>().Date;
            IGetBudgetAccountCollectionQuery query = CreateQuery(statusDate: statusDate);
            IBudgetAccountCollection result = await sut.QueryAsync(query);

            Assert.That(result.StatusDate, Is.EqualTo(statusDate));
        }
        public async Task QueryAsync_WhenBudgetAccountCollectionWasReturnedFromAccountingRepository_ReturnsCalculatedBudgetAccountCollection()
        {
            IBudgetAccountCollection calculatedBudgetAccountCollection = _fixture.BuildBudgetAccountCollectionMock().Object;
            IBudgetAccountCollection budgetAccountCollection = _fixture.BuildBudgetAccountCollectionMock(calculatedBudgetAccountCollection: calculatedBudgetAccountCollection).Object;
            QueryHandler sut = CreateSut(budgetAccountCollection: budgetAccountCollection);

            IGetBudgetAccountCollectionQuery query = CreateQuery();
            IBudgetAccountCollection result = await sut.QueryAsync(query);

            Assert.That(result, Is.EqualTo(calculatedBudgetAccountCollection));
        }
        public async Task QueryAsync_WhenCalled_AssertGetBudgetAccountsAsyncWasCalledOnAccountingRepository()
        {
            QueryHandler sut = CreateSut();

            int accountingNumber = _fixture.Create<int>();
            DateTime statusDate = _fixture.Create<DateTime>().Date;
            IGetBudgetAccountCollectionQuery query = CreateQuery(accountingNumber, statusDate);
            await sut.QueryAsync(query);

            _accountingRepositoryMock.Verify(m => m.GetBudgetAccountsAsync(
                    It.Is<int>(value => value == accountingNumber),
                    It.Is<DateTime>(value => value == statusDate)),
                Times.Once);
        }
        public void QueryAsync_WhenQueryIsNull_ThrowsArgumentNullException()
        {
            QueryHandler sut = CreateSut();

            ArgumentNullException result = Assert.ThrowsAsync<ArgumentNullException>(async () => await sut.QueryAsync(null));

            Assert.That(result.ParamName, Is.EqualTo("query"));
        }