xUnit Theory ClassData Sample

xunit-theory-classdata.cs

// class with parameters

public class SendEmailParameters : IEnumerable<object[]>
{
    public IEnumerator<object[]> GetEnumerator()
    {
        // parameters to test send email success
        yield return new object[]
        {
            new SendEmailModel
            {
                Content = "hello world",
                Email = "[email protected]"
            },
            new SendEmailResult
            {
                Result = true
            }
        };

        // parameters to test send email failed
        yield return new object[]
        {
            new SendEmailModel
            {
                Content = "hello world",
                Email = "wrong-email"
            },
            new SendEmailResult
            {
                Result = false
            }
        };
    }

    IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
}

// tests

[Theory]
[ClassData(typeof(SendEmailParameters))]
public static void SendEmail_Should_Validate_Email(SendEmailModel model, SendEmailResult expected)
{
    // arrange
    var emailSender = new EmailSender();

    // act
    var emailSended = emailSender.SendEmail(model);

    // assert
    Assert.True(expected.Result, emailSended.Result);
}