public void StateTests()
{
using (var db = new StateDbContext())
{
var e = db.Items.Add(new TestItem {
Description = "1"
});
db.SaveChanges();
PreEntityEntry afterEntry = null;
using (db.AfterEach.Subscribe(x => afterEntry = x))
{
var e2 = db.Items.Find(e.Entity.Id);
e2.Description = "1";
db.SaveChanges();
afterEntry.OriginalValues["Description"].Should().Be(afterEntry.Entry.CurrentValues["Description"], "No change should have been detected");
var e3 = db.Items.Find(e.Entity.Id);
e3.Description = "2";
db.SaveChanges();
afterEntry.OriginalValues["Description"].Should().Be("1", "Original values in pre-entry did not clone");
afterEntry.Entry.OriginalValues["Description"].Should().Be("2", "Original values didn't change in standard entry");
afterEntry.Entry.CurrentValues["Description"].Should().Be("2", "Current values didn'tchange in standard entry");
}
}
}
/// <summary>
/// Sets perssistant state
/// </summary>
/// <param name="name">Name of state</param>
/// <param name="value">Value to set or null</param>
public void SetPersistentState(string name, object?value)
{
_ = ConnectionString ??
throw new NullReferenceException("Connection string cannot be null, please set");
using (var c = new StateDbContext(ConnectionString))
{
var prop = c.States.FirstOrDefault(n => n.PropName == name);
if (prop is null)
{
if (value is null)
{
return; // No value allready
}
var state = new State()
{
PropName = name,
IntValue = (value is int) ? (int)value : null,
DoubleValue = (value is double) ? (double)value : null,
StringValue = (value is string) ? (string)value : null
};
c.Add(state);
c.SaveChanges();
}
else
{
// update existing
if (value is null)
{
c.Remove <State>(prop);
c.SaveChanges();
return;
}
prop.IntValue = (value is int) ? (int)value : null;
prop.DoubleValue = (value is double) ? (double)value : null;
prop.StringValue = (value is string) ? (string)value : null;
c.SaveChanges();
}
}
}