public void WriteSingleRegularExpression()
{
using (var stream = new MemoryStream())
using (var reader = new BinaryReader(stream))
{
var root = new BSONDocument();
var pattern = @"^[-.\w]+@(?:[a-z\d]{2,}\.)+[a-z]{2,6}$";
var options = BSONRegularExpressionOptions.I | BSONRegularExpressionOptions.M |BSONRegularExpressionOptions.U;
var regex = new BSONRegularExpression(pattern, options);
root.Set(new BSONRegularExpressionElement("email", regex));
root.WriteAsBSON(stream);
Assert.AreEqual(stream.Position, 55); // ensure document length is 55 bytes
stream.Seek(0, SeekOrigin.Begin);
CollectionAssert.AreEqual(reader.ReadBytes(4), BitConverter.GetBytes(55)); // ensure content length is 55
Assert.AreEqual(reader.ReadByte(), (byte)BSONElementType.RegularExpression); // ensure element type is RegularExpression 0x0b
CollectionAssert.AreEqual(reader.ReadBytes(5), Encoding.UTF8.GetBytes("email")); // ensure element name is 'email'
Assert.AreEqual(reader.ReadByte(), (byte)0x00); // ensure string name terminator 0x00 is present
CollectionAssert.AreEqual(reader.ReadBytes(38), Encoding.UTF8.GetBytes(pattern)); // ensure element value is pattern
Assert.AreEqual(reader.ReadByte(), (byte)0x00); // ensure string value terminator 0x00 is present
CollectionAssert.AreEqual(reader.ReadBytes(3), Encoding.UTF8.GetBytes("imu")); // ensure element value is options in BSON format
Assert.AreEqual(reader.ReadByte(), (byte)0x00); // ensure string value terminator 0x00 is present
Assert.AreEqual(reader.ReadByte(), (byte)0x00); // ensure last byte is terminator 0x00
Assert.AreEqual(stream.Position, 55); // ensure whole document readed
}
}
/// <summary>
/// { email: <pattern='^[-.\w]+@(?:[a-z\d]{2,}\.)+[a-z]{2,6}$' options=I,M,U> }
/// </summary>
public void WriteSingleRegularExpression(Stream stream)
{
var root = new BSONDocument();
var pattern = @"^[-.\w]+@(?:[a-z\d]{2,}\.)+[a-z]{2,6}$";
var options = BSONRegularExpressionOptions.I | BSONRegularExpressionOptions.M |BSONRegularExpressionOptions.U;
var regex = new BSONRegularExpression(pattern, options);
root.Set(new BSONRegularExpressionElement("email", regex));
root.WriteAsBSON(stream);
}