Detailed message for graph comparison of C# 9 records

Hi! When used with regular classes, comparing two different objects yields a message detailing what exactly is different, like in my case:

Expected member WorkingHoursJson to be <null>, but found 
"[{"dayOfWeek": "friday", "latestTime": 120, "earliestTime": 60}]"

When I make that class a record, those details are lost, and both objects are just dumped into message: Expected createdBusiness to be BusinessDto { Id = 1, Name = Halvorson - Orn, CreatedAt = 12.09.2020 13:47:54, UpdatedAt = 12.09.2020 13:47:54, EnableA... …and so on. Is there a way to get detailed messages for records? Thanks!

EDIT: found ComparingByMembers option, this solves the problem. But I think it would be better to compare records by members by default.

[Cherepoc]

Judging by the project I work in, records are used differently then structs. They are either used as local helpers (and are not compared in tests), or as Dtos, and that’s one of the reasons why they were created, as far as I know. We just replace old dto classes with records now, because of non-destructable mutations. Many of those dto classes are serialized to json and have collections, and are checked in tests for equality. Structs are used in our project primarily to represent some special for of data - DateTime, coordinates, etc. It makes sense to compare them by values, because they might have a very special way to compare the data and we can’t know that just by looking at the properties. But that is not the case with records, they are quite the same as tuples in that regard. They are structs too, yet they are not regarded as such for assertions. What makes records different? Anyway, that is just a perspective of a person with experience of using records in just one project. I don’t pretend to be right here. Thanks!

[InspiringCode]

Meanwhile you can use this workaround to use ComparingByMembers for ALL record types:

static TestBase()
{
    AssertionOptions.EquivalencySteps.Insert<RecordEquivalencyStep>();
}

private class RecordEquivalencyStep : IEquivalencyStep
{
    private readonly StructuralEqualityEquivalencyStep _structuralStep = new StructuralEqualityEquivalencyStep();

    public bool CanHandle(IEquivalencyValidationContext context, IEquivalencyAssertionOptions config) => 
        context.Expectation != null &&
        IsRecord(context.RuntimeType) && 
        _structuralStep.CanHandle(context, config);

    public bool Handle(IEquivalencyValidationContext context, IEquivalencyValidator parent, IEquivalencyAssertionOptions config)
        => _structuralStep.Handle(context, parent, config);

    private static bool IsRecord(Type type) =>
        type.GetMethod("<Clone>$") != null &&
        type.GetTypeInfo()
            .DeclaredProperties
            .FirstOrDefault(p => p.Name == "EqualityContract")?
            .GetMethod?
            .GetCustomAttribute(typeof(CompilerGeneratedAttribute)) != null;
}