如何正确使用Record.ExceptionAsync？
await Record.ExceptionAsync(async () => await x.GetAsync())
或
await Record.ExceptionAsync(() => x.GetAsync())
示例：

[Fact]
public async Task ShouldValidateDuplicateEmailOnSave()
{
    var user = new User();
    var predicate = () => It.IsAny<Expression<Func<User, bool>>>();
    var sut = _autoMock.Create<IUserService>();
    var validator = _autoMock.Mock<IUniquenessValidator<User>>();
    validator
        .Setup(m => m.Validate<EmailUniquenessError>(predicate.Invoke()))
        .Throws(new EmailUniquenessError());

    var actual = await Record.ExceptionAsync(() => sut.Save(user)); // I don't use postfix "Async"

    Assert.NotNull(actual);
    Assert.IsType<EmailUniquenessError>(actual);
    validator.Verify(v => v.Validate<EmailUniquenessError>(predicate.Invoke()), Times.Once);
}

我不明白有什么区别，我在测试中看不到。