public async Task AddAsync__Argument_is_null__Should_throw_ArgumentNullException()
{
var service = new ActivityLogDbService(_dbContextMock.Object, _logger);
Func <Task> result = async() => await service.AddAsync(null as ActivityLog);
await result.Should().ThrowExactlyAsync <ArgumentNullException>("Because argument 'ActivityLog' is null.");
}
public async Task AddAsync__Add_successful__Resource_contains_added_ActivityLog()
{
using (var factory = new DbContextFactory())
{
using (var context = await factory.CreateContextAsync())
{
var service = new ActivityLogDbService(context, _logger);
await service.AddAsync(_validActivityLog);
context.ActivityLogs.Contains(_validActivityLog).Should().BeTrue();
}
}
}
public async Task AddAsync__Add_successful__Should_return_added_ActivityLog()
{
using (var factory = new DbContextFactory())
{
using (var context = await factory.CreateContextAsync())
{
var service = new ActivityLogDbService(context, _logger);
var result = await service.AddAsync(_validActivityLog);
result.Should().BeEquivalentTo(_validActivityLog);
}
}
}
public async Task AddAsync__Add_successful__Resource_length_should_be_greater_by_1()
{
using (var factory = new DbContextFactory())
{
using (var context = await factory.CreateContextAsync())
{
int expectedLength = context.ActivityLogs.Count() + 1;
var service = new ActivityLogDbService(context, _logger);
await service.AddAsync(_validActivityLog);
context.ActivityLogs.Count().Should().Be(expectedLength);
}
}
}
public async Task AddAsync__Resource_is_null__Should_throw_InternalDbServiceException()
{
using (var factory = new DbContextFactory())
{
using (var context = await factory.CreateContextAsync())
{
context.ActivityLogs = null as DbSet <ActivityLog>;
var service = new ActivityLogDbService(context, _logger);
Func <Task> action = async() => await service.AddAsync(_validActivityLog);
await action.Should().ThrowExactlyAsync <InternalDbServiceException>("Because resource reference is set to null");
}
}
}
public async Task AddAsync__In_resource_exists_the_same_activity_log_as_this_one_to_be_added__Should_throw_InvalidOperationException()
{
using (var factory = new DbContextFactory())
{
using (var context = await factory.CreateContextAsync())
{
context.ActivityLogs.Add(_validActivityLog);
await context.SaveChangesAsync();
}
using (var context = await factory.CreateContextAsync())
{
var service = new ActivityLogDbService(context, _logger);
Func <Task> result = async() => await service.AddAsync(_validActivityLog);
await result.Should().ThrowExactlyAsync <InvalidOperationException>("Because in resource exists the same ActivityLog as this one to be added.");
}
}
}
public async Task AddAsync__Resource_doesnt_exist__Should_throw_InternalDbServiceException()
{
using (var factory = new DbContextFactory())
{
using (var context = await factory.CreateContextAsync())
{
// Drop ActivityLogs table.
context.Database.ExecuteSqlCommand("DROP TABLE [ActivityLogs]");
}
using (var context = await factory.CreateContextAsync())
{
var service = new ActivityLogDbService(context, _logger);
Func <Task> action = async() => await service.AddAsync(_validActivityLog);
await action.Should().ThrowExactlyAsync <InternalDbServiceException>("Because resource doesnt exist and cannot get single instance of ActivityLog. " +
"NOTE Excaption actually is type of 'SqLiteError' only if database provider is SQLite.");
}
}
}