public void NumberListColumn_NullableCases()
{
// StringColumns are extremely common in object models,
// so having very compact representations for common cases
// is really important to file size for small databases.
GenericNumberListColumn <int> column = new GenericNumberListColumn <int>(Nullability.DefaultToNull);
TreeDiagnostics diagnostics;
// Empty: { }
diagnostics = TreeSerializer.Diagnostics(column, TreeFormat.Binary);
Assert.True(diagnostics.Length <= 2);
// All null: { IsNull: { Count: 100, Capacity: 100 } }
for (int i = 0; i < 100; ++i)
{
column[i] = null;
}
CollectionReadVerifier.VerifySame(column, TreeSerializer.RoundTrip(column, TreeFormat.Binary, testDoubleDispose: false));
diagnostics = TreeSerializer.Diagnostics(column, TreeFormat.Binary);
Assert.True(1 == diagnostics.Children.Count);
Assert.True(diagnostics.Length <= 13);
// All empty: Only nulls false written
List <int> empty = new List <int>();
for (int i = 0; i < 100; ++i)
{
column[i] = empty;
}
CollectionReadVerifier.VerifySame(column, TreeSerializer.RoundTrip(column, TreeFormat.Binary, testDoubleDispose: false));
diagnostics = TreeSerializer.Diagnostics(column, TreeFormat.Binary);
Assert.True(1 == diagnostics.Children.Count);
Assert.True(diagnostics.Length <= 13);
// No nulls, No Empty: 4b + 2.125b / value (613b) + 4 pages x 4b (16b) + overhead (~10b)
List <int> single = new List <int>();
single.Add(1);
for (int i = 0; i < 100; ++i)
{
column[i] = single;
}
CollectionReadVerifier.VerifySame(column, TreeSerializer.RoundTrip(column, TreeFormat.Binary, testDoubleDispose: false));
diagnostics = TreeSerializer.Diagnostics(column, TreeFormat.Binary);
Assert.True(1 == diagnostics.Children.Count);
Assert.True(diagnostics.Length <= 640);
// Nulls and Non-Nulls; both parts must be written
column[50] = null;
CollectionReadVerifier.VerifySame(column, TreeSerializer.RoundTrip(column, TreeFormat.Binary, testDoubleDispose: false));
diagnostics = TreeSerializer.Diagnostics(column, TreeFormat.Binary);
Assert.True(2 == diagnostics.Children.Count);
Assert.True(diagnostics.Length <= 670);
}
public void GenericNumberListColumn_Basics()
{
List <int> empty = new List <int>();
GenericNumberListColumn <int> column = new GenericNumberListColumn <int>();
column[0] = new int[] { 0, 1, 2 };
TreeDiagnostics diagnostics = TreeSerializer.Diagnostics(column, TreeFormat.Binary);
int tinyColumnLength = (int)diagnostics.Length;
Column.Basics(() => new GenericNumberListColumn <int>(), null, column[0], (index) =>
{
IList <int> values = column[index];
if (values == null || values.Count == 0)
{
column[index] = new int[] { index, index + 1, index + 2 };
values = column[index];
}
return(values);
});
// ForEach
column.Clear();
column[0] = new int[] { 0, 1, 2 };
int sum = 0;
column.ForEach((slice) =>
{
int[] array = slice.Array;
int end = slice.Index + slice.Count;
for (int i = slice.Index; i < end; ++i)
{
sum += array[i];
}
});
Assert.Equal(3, sum);
}