SecureRandom.forTesting constructor

SecureRandom.forTesting({ int seed = 0, })

Returns a deterministic Random for testing purposes.

The sequence of outputs is a pure function of the seed you give to the constructor. In other words, this is only for meant for testing.

Example

import 'package:cryptography/cryptography.dart';

void main() {
  final random = SecureRandom.forTesting(seed: 0);
  final a = random.nextInt(1000);
  final b = random.nextInt(1000);
  final c = random.nextInt(1000);
  print('$a, $b, $c');
  // Always prints:
  //
  // 412, 913, 198
  //
  // Because it's a fake random number generator for testing only!
}

Implementation

factory SecureRandom.forTesting({
  int seed = 0,
}) {
  return _ChachaRandom.forTesting(seed: seed);
}