public void it_should_resolve_a_valid_instance_when_the_connection_string_is_specified()
{
ContextManager sut = new ContextManagerBuilder().SetConnectionString("some cnn");
var res = sut.GetCurrentContext<MoviesContext>();
res.Should().NotBeNull().And.BeOfType<MoviesContext>();
}
public void it_should_return_the_same_instance_even_when_calling_it_from_different_threads()
{
ContextManager sut = new ContextManagerBuilder();
var firstResolvedContext = sut.GetCurrentContext<MoviesContext>();
var numberOfConcurrentProcess = 10000;
var contextResolverInstances = new BlockingCollection<DbContext>();
var tasks = new Task[numberOfConcurrentProcess];
Console.WriteLine("Initial Thread ID: {0}", Thread.CurrentThread.ManagedThreadId);
for (int i = 0; i < numberOfConcurrentProcess; i++)
{
tasks[i] = Task.Factory.StartNew(() =>
{
var context = new ContextManagerBuilder().Build().GetCurrentContext<MoviesContext>();
contextResolverInstances.Add(context);
Console.WriteLine("Task - Thread ID: {0}", Thread.CurrentThread.ManagedThreadId);
}, TaskCreationOptions.LongRunning);
}
Task.WaitAll(tasks);
contextResolverInstances
.Should()
.NotBeNull()
.And
.NotBeEmpty()
.And
.HaveCount(numberOfConcurrentProcess)
.And
.ContainItemsAssignableTo<DbContext>()
.And
.NotContainNulls();
var firstResolvedContextHashCode = (firstResolvedContext as object).GetHashCode();
firstResolvedContextHashCode.Should().NotBe(default(int));
foreach (var item in contextResolverInstances)
{
var itemHashCode = (item as object).GetHashCode();
itemHashCode.Should().NotBe(default(int));
itemHashCode.Should().Be(firstResolvedContextHashCode);
item.Should().Be(firstResolvedContext);
var areReferenceEquals = ReferenceEquals(item, firstResolvedContext);
areReferenceEquals.Should().BeTrue();
}
}
public void it_should_dispose_the_current_context_when_it_is_not_null()
{
ContextManager sut = new ContextManagerBuilder();
var initialContext = sut.GetCurrentContext<MoviesContext>();
sut.Invoking(x => x.ReleaseContext()).ShouldNotThrow();
Thread.Sleep(2000);
initialContext.Invoking(x => x.GetValidationErrors())
.ShouldThrow<InvalidOperationException>()
.WithMessage("The operation cannot be completed because the DbContext has been disposed.", ComparisonMode.Exact);
}
public void it_should_not_throw_an_exception_if_the_current_context_is_null()
{
ContextManager sut = new ContextManagerBuilder();
sut.Invoking(x => x.ReleaseContext()).ShouldNotThrow();
}