squidex/backend/tests/Squidex.Infrastructure.Tests/StringExtensionsTests.cs

// ==========================================================================
//  Squidex Headless CMS
// ==========================================================================
//  Copyright (c) Squidex UG (haftungsbeschraenkt)
//  All rights reserved. Licensed under the MIT license.
// ==========================================================================

using Xunit;

namespace Squidex.Infrastructure
{
    public class StringExtensionsTests
    {
        [Theory]
        [InlineData(null, false)]
        [InlineData("", false)]
        [InlineData("me", false)]
        [InlineData("me@@web.com", false)]
        [InlineData("me@web.com", true)]
        [InlineData("Me@web.com", true)]
        public void Should_check_email(string email, bool isEmail)
        {
            Assert.Equal(isEmail, email.IsEmail());
        }

        [Theory]
        [InlineData(null)]
        [InlineData("")]
        [InlineData(" ")]
        public void Should_provide_fallback_if_invalid(string value)
        {
            Assert.Equal("fallback", value.Or("fallback"));
        }

        [Fact]
        public void Should_provide_value()
        {
            const string value = "value";

            Assert.Equal(value, value.Or("fallback"));
        }

        [Fact]
        public void Should_join_non_empty_if_all_are_valid()
        {
            var actual = StringExtensions.JoinNonEmpty("_", "1", "2", "3");

            Assert.Equal("1_2_3", actual);
        }

        [Fact]
        public void Should_join_non_empty_if_first_invalid()
        {
            var actual = StringExtensions.JoinNonEmpty("_", null, "2", "3");

            Assert.Equal("2_3", actual);
        }

        [Fact]
        public void Should_join_non_empty_if_middle_invalid()
        {
            var actual = StringExtensions.JoinNonEmpty("_", "1", null, "3");

            Assert.Equal("1_3", actual);
        }

        [Fact]
        public void Should_join_non_empty_if_last_invalid()
        {
            var actual = StringExtensions.JoinNonEmpty("_", "1", "2", null);

            Assert.Equal("1_2", actual);
        }

        [Fact]
        public void Should_escape_json()
        {
            var actual = StringExtensions.JsonEscape("Hello \"World\"");

            Assert.Equal("Hello \\\"World\\\"", actual);
        }

        [Fact]
        public void Should_calculate_hex_code_from_empty_array()
        {
            var actual = Array.Empty<byte>().ToHexString();

            Assert.Equal(string.Empty, actual);
        }

        [Fact]
        public void Should_calculate_hex_code_from_byte_array()
        {
            var actual = new byte[] { 0x00, 0x01, 0xFF, 0x1A, 0x2B, 0x3C }.ToHexString();

            Assert.Equal("0001FF1A2B3C", actual);
        }
    }
}