Feature: Variable (from Examples section) interpolation inside docstrings.

[metacoma]

hello, thank you for developing pytest-bdd-ng'

I am using the following approach to prepare and send a cloud event:

   Scenario: Send ping directly to function <endpoint>                                                                                                                    
      When God creates a new cloudevent                                                                                                                                    
       And God starts reading message from NATS topic ">"                                                                                                                                                                                                          
        And sets cloudevent header "ce-source" to "org.mindwm.<username>.<host>.clipboard"                                                                                 
        And sets cloudevent header "traceparent" to "<traceparent>"                                                                                                        
        And sends cloudevent to "<endpoint>"                                                                                                                               
        """                                                                                                                                                                
        {                                                                                                                                                                  
          "uuid": "4bca8a133-aba6-4f7f-ab95-242802fcac2c",                                                                                                                 
          "time": 1728325474,                                                                                                                                              
          "data": "clipboard secondary data"                                                                                                                               
        }                                                                                                                                                                  
        """                                                                                                                                                                
      Then the response http code should be "202"                                                                                                                          
                                                                                                                                                                           
      Examples:                                                                                                                                                            
       | context | username   | host      | endpoint | traceparent                   |                                                                                     
       | philadelphia   | flukeman   | the-host  | broker-ingress.knative-eventing/context-philadelphia/context-broker   | 00-5df92f3577b34da6a3ce929d0e0e4734-00f067aa0ba9  02b7-00 |                                                                                                                                                                
       | philadelphia   | flukeman   | the-host  | broker-ingress.knative-eventing/user-flukeman/user-broker | 00-6df93f3577b34da6a3ce929d0e0e4742-00f067aa0ba902b7-00 |   

If there was way to use "variables" from the Examples section inside the docstring, my scenario description would look like this.

   Scenario: Send cloudevent directly to knative function <endpoint>                                                                                                                    
      When God creates a new cloudevent                                                                                                                                    
         And God starts reading message from NATS topic ">"                                                                                                                 
         And sends cloudevent to "<endpoint>"                                                                                                                               
        """                                                                                                                                                                
        { 
           "ce-source": "org.mindwm.<username>.<host>.clipboard",
          "traceparent": "<traceparent>",                                                                                                                                                                  
          "uuid": "4bca8a133-aba6-4f7f-ab95-242802fcac2c",                                                                                                                 
          "time": 1728325474,                                                                                                                                              
          "data": "clipboard secondary data"                                                                                                                               
        }                                                                                                                                                                  
        """                                                                                                                                                                
      Then the response http code should be "202"             
      Examples:                                                                                                             
      | context | username   | host      | endpoint | traceparent                   |                                                                                     
      | philadelphia   | flukeman   | the-host  | broker-ingress.knative-eventing/context-philadelphia/context-broker   | 00-5df92f3577b34da6a3ce929d0e0e4734-00f067aa0ba9  02b7-00 |                                                                                                                                                                
      | philadelphia   | flukeman   | the-host  | broker-ingress.knative-eventing/user-flukeman/user-broker | 00-6df93f3577b34da6a3ce929d0e0e4742-00f067aa0ba902b7-00 |

I am not sure how complex this would be to implement, but I think it would be very convenient.

[elchupanebrej]

Hi, thank you for your feedback!

TLDR: it's not easy to add, but workarounds exist

1. The parser of feature files is developed here https://github.com/cucumber/gherkin ; Implementation must include ALL languages. I'll add a feature request(and attach the ticket here), but not expect fast feedback/implementation.
2. Workarounds:
   2.1. Bypass parameters from Examples sections into step via Step parameters and implementing formatting by yourself
   2.2. Introspecting fixturelikes provided by pytest-bdd in steps like feature, scenario and implementing formatting by yourself