simplex-chat/packages/simplexmq/test/buffer_test.dart

import 'dart:typed_data';
import 'package:simplexmq/src/buffer.dart';
import 'package:test/test.dart';

final hello123 = Uint8List.fromList([104, 101, 108, 108, 111, 49, 50, 51]);

class Base64Test {
  final String description;
  final String binary;
  final String base64;

  Base64Test(this.binary, this.base64) : description = binary;
  Base64Test.withDescription(this.description, this.binary, this.base64);
}

void main() {
  group('ascii encoding/decoding', () {
    test('encodeAscii', () {
      expect(encodeAscii('hello123'), hello123);
    });

    test('decodeAscii', () {
      expect(decodeAscii(hello123), 'hello123');
    });
  });

  group('base-64 encoding/decoding', () {
    String allBinaryChars() {
      final a = Uint8List(256);
      for (var i = 0; i < 256; i++) {
        a[i] = i;
      }
      return decodeAscii(a);
    }

    final base64tests = [
      Base64Test('\x12\x34\x56\x78', 'EjRWeA=='),
      Base64Test('hello123', 'aGVsbG8xMjM='),
      Base64Test('Hello world', 'SGVsbG8gd29ybGQ='),
      Base64Test('Hello worlds!', 'SGVsbG8gd29ybGRzIQ=='),
      Base64Test('May', 'TWF5'),
      Base64Test('Ma', 'TWE='),
      Base64Test('M', 'TQ=='),
      Base64Test.withDescription(
        'all binary chars',
        allBinaryChars(),
        'AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3BxcnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmqq6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==',
      ),
    ];

    test('encode64', () {
      for (final t in base64tests) {
        expect(encode64(encodeAscii(t.binary)), encodeAscii(t.base64));
      }
    });

    test('decode64', () {
      for (final t in base64tests) {
        expect(decode64(encodeAscii(t.base64)), encodeAscii(t.binary));
      }
      expect(decode64(encodeAscii('TWE')), null);
      expect(decode64(encodeAscii('TWE==')), null);
      expect(decode64(encodeAscii('TW!=')), null);
    });
  });
}