using System;
using System.Collections.Generic;
using Util.Tests.XUnitHelpers;
using Xunit;

namespace Util.Tests.Extensions; 

/// <summary>
/// 验证扩展测试
/// </summary>
public class ValidationExtensionsTest {
    /// <summary>
    /// 检查空值，不为空则正常执行
    /// </summary>
    [Fact]
    public void TestCheckNull() {
        object test = new object();
        test.CheckNull( "test" );
    }

    /// <summary>
    /// 检查空值，值为null则抛出异常
    /// </summary>
    [Fact]
    public void TestCheckNull_Null_Throw() {
        AssertHelper.Throws<ArgumentNullException>( () => {
            object test = new object();
            test = null;
            test.CheckNull( "test" );
        }, "test" );
    }

    /// <summary>
    /// 测试是否空值 - 字符串
    /// </summary>
    [Theory]
    [InlineData( null,true )]
    [InlineData( "", true )]
    [InlineData( " ", true )]
    [InlineData( "a", false )]
    public void TestIsEmpty_String( string value,bool result ) {
        Assert.Equal( value.IsEmpty(),result );
    }

    /// <summary>
    /// 测试是否空值 - Guid
    /// </summary>
    [Fact]
    public void TestIsEmpty_Guid() {
        Assert.True( Guid.Empty.IsEmpty() );
        Assert.False( Guid.NewGuid().IsEmpty() );
    }

    /// <summary>
    /// 测试是否空值 - 可空Guid
    /// </summary>
    [Fact]
    public void TestIsEmpty_Guid_Nullable() {
        Guid? value = null;
        Assert.True( value.IsEmpty() );
        value = Guid.Empty;
        Assert.True( value.IsEmpty() );
        value = Guid.NewGuid();
        Assert.False( value.IsEmpty() );
    }

    /// <summary>
    /// 测试是否空值 - 集合
    /// </summary>
    [Fact]
    public void TestIsEmpty_List() {
        List<int> list = null;
        Assert.True( list.IsEmpty() );
        list = new List<int>();
        Assert.True( list.IsEmpty() );
        list.Add( 1 );
        Assert.False( list.IsEmpty() );
    }

    /// <summary>
    /// 测试是否默认值
    /// </summary>
    [Fact]
    public void TestIsDefault() {
        Assert.True( Guid.Empty.IsDefault() );
        Assert.False( Guid.NewGuid().IsDefault() );
    }
}