Interpolate class fields and properties in attribute-based step names

[delatrie]

Discussed in https://github.com/orgs/allure-framework/discussions/2461

^{Originally posted by kiragengis March 30, 2024}
To give more context to the step, I want to be able to refer to a property value of the class in the step name. This is an example:

public class LogMore
{
    [AllureStep("This method logs with more context when {parameter1} is identified within {this.NameThatIdentifiesThisClass}")]
    public void ILogWithMoreContext(string parameter1)
    {

    }

    /// <summary>
    /// This property uniquely identifies the instances of the class
    /// </summary>
    public string NameThatIdentifiesThisClass { get; set; }
}

My approach would be to modify AllureStepParameterHelper.GetStepName to receive an instance from AllureStepAspectBase, and then add something similar to this to the if-else statement:

else if (TrySplit(pattern, '.', out var parts2) && parts2.Length == 2 && parts2[0] == "this")
{
    // We probably need to do some validation around this line
    stepName = stepName?.Replace(match.Value, instance?.GetType().GetProperty(parts2[1]).GetValue(instance).ToString());
}