VDR301.md

VDR301. Steps name should be in right order

The Vedro framework categorizes steps into three types:

• “given” - arrange steps, preparing data,
• “when” - the main act,
• “then”, “and” and “but” - asserts

By their meaning steps should be ordered: preparing data after the main act or asserting something before the main act seems to be useless.

❌ Anti-pattern

class Scenario(vedro.Scenario):
    subject = "scenario subject"

    def when(self):
        pass

    def and(self):
        pass

    def given(self):
        pass

    def then(self):
        pass

✅Best practice

class Scenario(vedro.Scenario):
    subject = "scenario subject"
    
    def given(self):
        pass

    def when(self):
        pass

    def then(self):
        pass

    def and(self):
        pass

Additional links

• https://vedro.io/docs/tutorial/api/chapter1-first-steps#lets-do-it
• VDR300. Step name should start with..