private async ValueTask <Teacher> TryCatch(ReturningTeacherFunction returningTeacherFunction)
{
try
{
return(await returningTeacherFunction());
}
catch (NullTeacherException nullTeacherException)
{
throw CreateAndLogValidationException(nullTeacherException);
}
catch (InvalidTeacherException invalidTeacherException)
{
throw CreateAndLogValidationException(invalidTeacherException);
}
catch (NotFoundTeacherException notFoundTeacherException)
{
throw CreateAndLogValidationException(notFoundTeacherException);
}
catch (SqlException sqlException)
{
var failedTeacherStorageExceptin =
new FailedTeacherStorageException(sqlException);
throw CreateAndLogCriticalDependencyException(failedTeacherStorageExceptin);
}
catch (DuplicateKeyException duplicateKeyException)
{
var alreadyExistsTeacherException =
new AlreadyExistsTeacherException(duplicateKeyException);
throw CreateAndLogDependencyValidationException(alreadyExistsTeacherException);
}
catch (DbUpdateConcurrencyException dbUpdateConcurrencyException)
{
var lockedTeacherException = new LockedTeacherException(dbUpdateConcurrencyException);
throw CreateAndLogDependencyValidationException(lockedTeacherException);
}
catch (DbUpdateException dbUpdateException)
{
var failedTeacherStorageException =
new FailedTeacherStorageException(dbUpdateException);
throw CreateAndLogDependencyException(failedTeacherStorageException);
}
catch (Exception exception)
{
var failedTeacherServiceException =
new FailedTeacherServiceException(exception);
throw CreateAndLogServiceException(failedTeacherServiceException);
}
}
public async Task ShouldThrowDependencyExceptionOnModifyIfDbUpdateExceptionOccursAndLogItAsync()
{
// given
Teacher randomTeacher = CreateRandomTeacher();
var databaseUpdateException = new DbUpdateException();
var failedTeacherStorageException =
new FailedTeacherStorageException(databaseUpdateException);
var expectedTeacherDependencyException =
new TeacherDependencyException(failedTeacherStorageException);
this.dateTimeBrokerMock.Setup(broker =>
broker.GetCurrentDateTime())
.Throws(databaseUpdateException);
// when
ValueTask <Teacher> modifyTeacherTask =
this.teacherService.ModifyTeacherAsync(randomTeacher);
// then
await Assert.ThrowsAsync <TeacherDependencyException>(() =>
modifyTeacherTask.AsTask());
this.dateTimeBrokerMock.Verify(broker =>
broker.GetCurrentDateTime(),
Times.Once);
this.storageBrokerMock.Verify(broker =>
broker.SelectTeacherByIdAsync(randomTeacher.Id),
Times.Never);
this.loggingBrokerMock.Verify(broker =>
broker.LogError(It.Is(SameExceptionAs(
expectedTeacherDependencyException))),
Times.Once);
this.storageBrokerMock.Verify(broker => broker.
UpdateTeacherAsync(It.IsAny <Teacher>()),
Times.Never);
this.loggingBrokerMock.VerifyNoOtherCalls();
this.storageBrokerMock.VerifyNoOtherCalls();
this.dateTimeBrokerMock.VerifyNoOtherCalls();
}
public async Task ShouldThrowCriticalDependencyExceptionOnAddIfSqlErrorOccursAndLogItAsync()
{
// given
Teacher someTeacher = CreateRandomTeacher();
SqlException sqlException = GetSqlException();
var failedTeacherStorageException =
new FailedTeacherStorageException(sqlException);
var expectedTeacherDependencyException =
new TeacherDependencyException(failedTeacherStorageException);
this.dateTimeBrokerMock.Setup(broker =>
broker.GetCurrentDateTime())
.Throws(sqlException);
// when
ValueTask <Teacher> addTeacherTask =
this.teacherService.CreateTeacherAsync(someTeacher);
// then
await Assert.ThrowsAsync <TeacherDependencyException>(() =>
addTeacherTask.AsTask());
this.dateTimeBrokerMock.Verify(broker =>
broker.GetCurrentDateTime(),
Times.Once);
this.loggingBrokerMock.Verify(broker =>
broker.LogCritical(It.Is(SameExceptionAs(
expectedTeacherDependencyException))),
Times.Once);
this.storageBrokerMock.Verify(broker =>
broker.InsertTeacherAsync(It.IsAny <Teacher>()),
Times.Never);
this.dateTimeBrokerMock.VerifyNoOtherCalls();
this.loggingBrokerMock.VerifyNoOtherCalls();
this.storageBrokerMock.VerifyNoOtherCalls();
}
private IQueryable <Teacher> TryCatch(ReturningQueryableTeacherFunction returningQueryableTeacherFunction)
{
try
{
return(returningQueryableTeacherFunction());
}
catch (SqlException sqlException)
{
var failedTeacherStorageExceptin =
new FailedTeacherStorageException(sqlException);
throw CreateAndLogCriticalDependencyException(failedTeacherStorageExceptin);
}
catch (Exception exception)
{
var failedTeacherServiceException =
new FailedTeacherServiceException(exception);
throw CreateAndLogServiceException(failedTeacherServiceException);
}
}
public void ShouldThrowCriticalDependencyExceptionOnRetrieveAllIfSqlErrorOccursAndLogIt()
{
// given
SqlException sqlException = GetSqlException();
var failedTeacherStorageException =
new FailedTeacherStorageException(sqlException);
var expectedTeacherDependencyException =
new TeacherDependencyException(failedTeacherStorageException);
this.storageBrokerMock.Setup(broker =>
broker.SelectAllTeachers())
.Throws(sqlException);
// when
Action retrieveAllTeachersAction = () =>
this.teacherService.RetrieveAllTeachers();
// then
Assert.Throws <TeacherDependencyException>(
retrieveAllTeachersAction);
this.loggingBrokerMock.Verify(broker =>
broker.LogCritical(It.Is(SameExceptionAs(
expectedTeacherDependencyException))),
Times.Once);
this.storageBrokerMock.Verify(broker =>
broker.SelectAllTeachers(),
Times.Once);
this.dateTimeBrokerMock.Verify(broker =>
broker.GetCurrentDateTime(),
Times.Never);
this.dateTimeBrokerMock.VerifyNoOtherCalls();
this.loggingBrokerMock.VerifyNoOtherCalls();
this.storageBrokerMock.VerifyNoOtherCalls();
}
public async Task ShouldThrowDependencyExceptionOnRetrieveIfDbUpdateErrorOccursAndLogItAsync()
{
// given
Guid someTeacherId = Guid.NewGuid();
var databaseUpdateException = new DbUpdateException();
var failedTeacherStorageException =
new FailedTeacherStorageException(databaseUpdateException);
var expectedTeacherDependencyException =
new TeacherDependencyException(failedTeacherStorageException);
this.storageBrokerMock.Setup(broker =>
broker.SelectTeacherByIdAsync(It.IsAny <Guid>()))
.ThrowsAsync(databaseUpdateException);
// when
ValueTask <Teacher> retrieveTeacherTask =
this.teacherService.RetrieveTeacherByIdAsync(someTeacherId);
// then
await Assert.ThrowsAsync <TeacherDependencyException>(() =>
retrieveTeacherTask.AsTask());
this.loggingBrokerMock.Verify(broker =>
broker.LogError(It.Is(SameExceptionAs(
expectedTeacherDependencyException))),
Times.Once);
this.storageBrokerMock.Verify(broker =>
broker.SelectTeacherByIdAsync(It.IsAny <Guid>()),
Times.Once);
this.dateTimeBrokerMock.VerifyNoOtherCalls();
this.loggingBrokerMock.VerifyNoOtherCalls();
this.storageBrokerMock.VerifyNoOtherCalls();
}