public void ReadingBeyondEntOfItemArea()
{
var filename = "MemoryMappedAccessTest_ReadingBeyondEntOfItemArea.tea";
using (var f = TeaFile <Event <int> > .Create(filename))
{
Time t = new DateTime(2000, 1, 1);
3.Times(() => f.Write(new Event <int> {
Time = t, Value = 777
}));
}
using (var view = TeaFile <Event <int> > .OpenMemoryMapping(filename))
{
view.Read(0);
view.Read(1);
view.Read(2);
Executing.This(() => view.Read(3)).Should().Throw <ArgumentOutOfRangeException>();
}
}
public void AccessItemsViaMemoryMapping()
{
var filename = "MemoryMappedAccessTest_AccessItemsViaMemoryMapping.tea";
using (var f = TeaFile <Event <int> > .Create(filename))
{
var dt = new DateTime(2000, 1, 1);
for (int i = 0; i < 27; i++)
{
f.Write(new Event <int> {
Time = dt.AddDays(i), Value = i * 10
});
}
}
using (var view = TeaFile <Event <int> > .OpenMemoryMapping(filename))
{
Event <int> e = view.Read(0);
e.Value.Should().Be(0);
e.Time.Should().Be(new DateTime(2000, 1, 1));
e = view.Read(0);
e.Value.Should().Be(0);
e.Time.Should().Be(new DateTime(2000, 1, 1));
e = view.Read(1);
e.Value.Should().Be(10);
e.Time.Should().Be(new DateTime(2000, 1, 2));
e = view.Read(2);
e.Value.Should().Be(20);
e.Time.Should().Be(new DateTime(2000, 1, 3));
var t = new DateTime(2000, 1, 1);
for (int i = 0; i < 27; i++)
{
e = view.Read(i);
e.Value.Should().Be(i * 10);
e.Time.Should().Be(t.AddDays(i));
e.Should().Be(view[i]);
}
}
}
