Creating mocks for all types of classes

mocks.cs

private static object RandomString(int length)
{
    var random = new Random((int)DateTime.Now.Ticks);
    const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    return new string(
        Enumerable.Repeat(chars, length)
        .Select(s => s[random.Next(s.Length)]
        ).ToArray()
    );
}
private static int getRandom(int min, int max){
    return (new Random((int)DateTime.Now.Ticks).Next(min, max));
}

private static T mockAll<T>() where T : new(){

    var mock =  new T();

    foreach(var prop in typeof(T).GetProperties()){
        if(prop.PropertyType.Equals(typeof(string))) typeof(T).GetProperty(prop.Name).SetValue(mock, RandomString(1), null);
        if(prop.PropertyType.Equals(typeof(decimal))) typeof(T).GetProperty(prop.Name).SetValue(mock, 0.0m, null);
        if(prop.PropertyType.Equals(typeof(decimal?))) typeof(T).GetProperty(prop.Name).SetValue(mock, 0.1m, null);
        if(prop.PropertyType.Equals(typeof(int))) typeof(T).GetProperty(prop.Name).SetValue(mock, 0, null);
        if(prop.PropertyType.Equals(typeof(int?))) typeof(T).GetProperty(prop.Name).SetValue(mock, 1, null);
        if(prop.PropertyType.Equals(typeof(double))) typeof(T).GetProperty(prop.Name).SetValue(mock, 0.0, null);
        if(prop.PropertyType.Equals(typeof(double?))) typeof(T).GetProperty(prop.Name).SetValue(mock, 0.1, null);

    }
    return mock;
}
private static string ToJson(object obj) =>
    Newtonsoft.Json.JsonConvert.SerializeObject(obj);