public void TestCachingReadOnlyEntity( )
{
using (new EntitySnapshotContext( ))
{
var nameField = Entity.Get <Field>(new EntityRef("core", "name"));
EntitySnapshotContextData snaphotData = EntitySnapshotContext.GetContextData( );
IEntity cachedEntity;
Assert.IsTrue(snaphotData.TryGetEntity(nameField.Id, out cachedEntity), "The entity should be cached");
}
}
public void TestNestedSnapshotCachingReadonlyEntity( )
{
using (new EntitySnapshotContext( ))
{
long nameFieldId;
using (new EntitySnapshotContext( ))
{
var nameField = Entity.Get <Field>(new EntityRef("core", "name"));
nameFieldId = nameField.Id;
EntitySnapshotContextData snaphotData2 = EntitySnapshotContext.GetContextData( );
IEntity cachedEntity2;
Assert.IsTrue(snaphotData2.TryGetEntity(nameFieldId, out cachedEntity2), "The entity should be cached");
}
EntitySnapshotContextData snaphotData1 = EntitySnapshotContext.GetContextData( );
IEntity cachedEntity1;
Assert.IsTrue(snaphotData1.TryGetEntity(nameFieldId, out cachedEntity1), "The entity should be cached");
}
}
public void TestCachingReadOnlyEntityIgnoreWrites( )
{
// Note: in order to remove dependencies on 'Shared' objects, the following changes were made in this test:
// 'Organisation' got changed to 'Report'
// 'Employee' got changed to 'ReportColumn'
// 'WorksFor' got changed to 'ColumnForReport'
var organisationA = new Report( );
organisationA.Save( );
var organisationB = new Report();
organisationB.Save( );
var organisationC = new Report();
organisationC.Save( );
var employee = new ReportColumn
{
Name = "Initial Name",
ColumnForReport = organisationA
};
employee.Save( );
using (new EntitySnapshotContext( ))
{
// This will cache the employee
var readOnlyEmployee = Entity.Get <ReportColumn>(employee.Id);
EntitySnapshotContextData snaphotData = EntitySnapshotContext.GetContextData( );
IEntity cachedEntity;
Assert.IsTrue(snaphotData.TryGetEntity(readOnlyEmployee.Id, out cachedEntity), "The entity should be cached");
Assert.AreEqual("Initial Name", readOnlyEmployee.Name, "The name of the read only employee is invalid");
Assert.AreEqual(organisationA.Id, readOnlyEmployee.ColumnForReport.Id, "The organisation of the read only employee is invalid");
// Get a writable copy and change the name & organisation
var writeableEmployee = readOnlyEmployee.AsWritable <ReportColumn>();
writeableEmployee.Name = "New Name";
writeableEmployee.ColumnForReport = organisationB;
writeableEmployee.Save( );
// Ensure that requesting a read only employee returns the cached one
readOnlyEmployee = Entity.Get <ReportColumn>(employee.Id);
Assert.AreEqual("Initial Name", readOnlyEmployee.Name);
Assert.AreEqual(organisationA.Id, readOnlyEmployee.ColumnForReport.Id, "The organisation of the read only employee is invalid");
// Ensure that requesting a writeable employee returns the new one
writeableEmployee = Entity.Get <ReportColumn>(employee.Id, true);
Assert.AreEqual("New Name", writeableEmployee.Name);
Assert.AreEqual(organisationB.Id, writeableEmployee.ColumnForReport.Id, "The organisation of the writeable employee is invalid");
}
// This will cache the employee
var readOnlyEmployee2 = Entity.Get <ReportColumn>(employee.Id);
Assert.AreEqual("New Name", readOnlyEmployee2.Name);
Assert.AreEqual(organisationB.Id, readOnlyEmployee2.ColumnForReport.Id, "The organisation of the read only employee is invalid");
// Get a writable copy and change the name
var writeableEmployee2 = readOnlyEmployee2.AsWritable <ReportColumn>();
writeableEmployee2.Name = "New Name2";
writeableEmployee2.ColumnForReport = organisationC;
writeableEmployee2.Save( );
// Ensure that requesting a read only employee returns the new one
readOnlyEmployee2 = Entity.Get <ReportColumn>(employee.Id);
Assert.AreEqual("New Name2", readOnlyEmployee2.Name);
Assert.AreEqual(organisationC.Id, readOnlyEmployee2.ColumnForReport.Id, "The organisation of the read only employee is invalid");
// Ensure that requesting a writeable employee returns the new one
writeableEmployee2 = Entity.Get <ReportColumn>(employee.Id, true);
Assert.AreEqual("New Name2", writeableEmployee2.Name);
Assert.AreEqual(organisationC.Id, writeableEmployee2.ColumnForReport.Id, "The organisation of the writeable employee is invalid");
}
public void TestMultipleThreads( )
{
bool thread1Failed = true;
bool thread2Failed = true;
var startEvent = new ManualResetEvent(false);
var thread1GotNameFieldEvent = new ManualResetEvent(false);
var thread2GotDescriptionFieldEvent = new ManualResetEvent(false);
string thread1Result = string.Empty;
string thread2Result = string.Empty;
var thread1 = new Thread(() =>
{
startEvent.WaitOne( );
var descriptionField = Entity.Get <Field>(new EntityRef("core", "description"));
using (new EntitySnapshotContext( ))
{
// The name field should be cached for this thread
var nameField = Entity.Get <Field>(new EntityRef("core", "name"));
EntitySnapshotContextData snaphotData = EntitySnapshotContext.GetContextData( );
// Wait for thread2 to have the description field cached
thread1GotNameFieldEvent.Set( );
thread2GotDescriptionFieldEvent.WaitOne( );
IEntity cachedEntity;
if (!snaphotData.TryGetEntity(nameField.Id, out cachedEntity))
{
thread1Result = "The name entity should be cached";
}
else if (snaphotData.TryGetEntity(descriptionField.Id, out cachedEntity))
{
thread1Result = "The description entity should not be cached";
}
else
{
thread1Failed = false;
}
}
});
var thread2 = new Thread(() =>
{
startEvent.WaitOne( );
var nameField = Entity.Get <Field>(new EntityRef("core", "name"));
using (new EntitySnapshotContext( ))
{
// The description field should be cached for this thread
var descriptionField = Entity.Get <Field>(new EntityRef("core", "description"));
EntitySnapshotContextData snaphotData = EntitySnapshotContext.GetContextData( );
// Wait for thread1 to have the name field cached
thread2GotDescriptionFieldEvent.Set( );
thread1GotNameFieldEvent.WaitOne( );
IEntity cachedEntity;
if (!snaphotData.TryGetEntity(descriptionField.Id, out cachedEntity))
{
thread2Result = "The description entity should be cached";
}
else if (snaphotData.TryGetEntity(nameField.Id, out cachedEntity))
{
thread2Result = "The name entity should not be cached";
}
else
{
thread2Failed = false;
}
}
});
thread1.Start( );
thread2.Start( );
startEvent.Set( );
thread1.Join( );
thread2.Join( );
Assert.IsFalse(thread1Failed, "Thread 1 failed: " + thread1Result);
Assert.IsFalse(thread2Failed, "Thread 2 failed: " + thread2Result);
}