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//------------------------------------------------------------------------------------
// <copyright file="KeyTests.cs" company="Stephen Jennings">
//   Copyright 2011 Stephen Jennings. Licensed under the Apache License, Version 2.0.
// </copyright>
//------------------------------------------------------------------------------------

namespace OathNet.Test
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using NUnit.Framework;

    public class KeyTests
    {
        [Test]
        public void Key_created_with_binary_returns_correct_binary_1()
        {
            var keyData = new byte[]
            {
                0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30,
                0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30
            };
            var key = new Key(keyData);
            var actual = key.Binary;

            Assert.AreEqual(keyData, actual);
        }

        [Test]
        public void Key_created_with_binary_returns_correct_binary_2()
        {
            var keyData = new byte[]
            {
                0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30,
                0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30,
                0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x30,
                0x31, 0x32
            };
            var key = new Key(keyData);
            var actual = key.Binary;

            Assert.AreEqual(keyData, actual);
        }

        [Test]
        public void Key_created_with_binary_returns_correct_base32_1()
        {
            var keyData = new byte[]
            {
                0xDE, 0xAD, 0xBE, 0xEF, 0x48,
                0x65, 0x6C, 0x6C, 0x6F, 0x21
            };

            var key = new Key(keyData);
            var actual = key.Base32;
            var expected = "32W3532IMVWGY3ZB";

            Assert.AreEqual(expected, actual);
        }

        [Test]
        public void Key_created_with_binary_returns_correct_base32_2()
        {
            var keyData = new byte[]
            {
                0x48, 0x65, 0x6C, 0x6C, 0x6F,
                0x21, 0xDE, 0xAD, 0xBE, 0xEF
            };

            var key = new Key(keyData);
            var actual = key.Base32;
            var expected = "JBSWY3DPEHPK3PXP";

            Assert.AreEqual(expected, actual);
        }

        [Test]
        public void Key_created_with_base32_returns_correct_base32_1()
        {
            var base32 = "32W3532IMVWGY3ZB";
            var key = new Key(base32);
            var actual = key.Base32;

            Assert.AreEqual(base32, actual);
        }

        [Test]
        public void Key_created_with_base32_returns_correct_base32_2()
        {
            var base32 = "JBSWY3DPEHPK3PXP";
            var key = new Key(base32);
            var actual = key.Base32;

            Assert.AreEqual(base32, actual);
        }

        [Test]
        public void Key_created_with_base32_returns_correct_binary_1()
        {
            var base32 = "32W3532IMVWGY3ZB";
            var key = new Key(base32);
            var actual = key.Binary;
            var expected = new byte[]
            {
                0xDE, 0xAD, 0xBE, 0xEF, 0x48,
                0x65, 0x6C, 0x6C, 0x6F, 0x21
            };

            Assert.AreEqual(expected, actual);
        }

        [Test]
        public void Key_created_with_base32_returns_correct_binary_2()
        {
            var base32 = "JBSWY3DPEHPK3PXP";
            var key = new Key(base32);
            var actual = key.Binary;
            var expected = new byte[]
            {
                0x48, 0x65, 0x6C, 0x6C, 0x6F,
                0x21, 0xDE, 0xAD, 0xBE, 0xEF
            };

            Assert.AreEqual(expected, actual);
        }

        [Test]
        public void Key_created_with_invalid_string_throws_ArgumentException()
        {
            var invalidChars = new List<string>()
            { 
                "1", "8", "9", "0",
                "`", "~", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "-", "_", "+",
                "[", "]", "{", "}", "|", "\\",
                ";", ":", "'", "\"",
                ",", ".", "<", ">", "/", "?"
            };

            foreach (var s in invalidChars)
            {
                Assert.Throws<ArgumentException>(() => new Key("ABCD" + s + "EFG"), "'" + s + "' is not part of the alphabet");
            }
        }

        [Test]
        public void Key_created_with_parameterless_constructor_is_20_bytes()
        {
            var key = new Key();
            Assert.AreEqual(20, key.Binary.Length);
            Assert.False(key.Binary.All(b => b == 0), "The key was not generated");
        }
    }
}