C# Fluent Assertions global options for ShouldBeEquivalentTo

Question

In Fluent Assertions when comparing objects with DateTime properties there are sometimes a slight mismatch in the milliseconds and the comparison fail. The way we get around it

Answer 1

I am afraid the closest thing you can come to, is providing new methods

public static void ShouldBeEquivalentToDef(this T subject, object expectation, string reason = "",
    params object[] reasonArgs)
{
    ShouldBeEquivalentToDef(subject, expectation, config => config, reason, reasonArgs);
}

public static void ShouldBeEquivalentToDef(this T subject, object expectation,
    Func, EquivalencyAssertionOptions> config, string reason = "", params object[] reasonArgs)
{
    var context = new EquivalencyValidationContext
    {
        Subject = subject,
        Expectation = expectation,
        CompileTimeType = typeof (T),
        Reason = reason,
        ReasonArgs = reasonArgs
    };

    var defConstructedOptions = config(EquivalencyAssertionOptions.Default());
    defConstructedOptions.Using(ctx => ctx.Subject.Should().BeCloseTo(ctx.Expectation))
            .WhenTypeIs()

    new EquivalencyValidator(defConstructedOptions).AssertEquality(context);
}