public void Clear()
{
// Arrange
var filter = new TextEncoderSettings();
for (int i = 1; i <= char.MaxValue; i++)
{
filter.AllowCharacter((char)i);
}
// Act
filter.Clear();
// Assert
for (int i = 0; i <= char.MaxValue; i++)
{
Assert.False(filter.IsCharacterAllowed((char)i));
}
}