add 'this' to Step processing (via allure-framework#615)

[Denysss]

fix #615 Add this to Step processing

Checklist

• Sign Allure CLA
• Provide unit tests

[Denysss]

@baev Could you please review the pull request?

[baev]

In general I don't like the idea of having possibility to use this in step annotations (even having in mind that allure 1 allow it)

Your request changes signatures of public methods that can be used by 3rd party integrations (many users use this methods in custom aspects)

[Denysss]

In general I don't like the idea of having possibility to use this in step annotations (even having in mind that allure 1 allow it)

In my case, I use JUnit 5 @TestFactory (DynamicTest) and add @Step annotation for execute methods of the classes which implements org.junit.jupiter.api.function.Executable interface. I found it's very informative for my Allure report consumers to show some values from the fields of these classes. For instance:

...
import org.junit.jupiter.api.function.Executable;
...
public class SomeAction implements Executable {

   private String actionDescription;
   private ActionName actionName;

   public SomeAction(...) {
      ...
   }

   @Step("Action: {this.actionDescription} ({this.actionName})")
   public void execute() throws Throwable {
      ...
   }
   ...
}

@baev Why don't you like to use this? Maybe, we can find a compromise.
I can propose to put all class fields to params instead of the whole this:
params.put("this", joinPoint.getThis()); --> ... params.put("this.field1", value1); ...

[baev]

BTW you can use Allure.step API instead of Step annotation:

public void execute() throws Throwable {
    Allure.step(String.format("Action: %s %s", actionName, actionDescription), () -> {
       ...
    });
}

[baev]

@Denysss thanks!