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Gherkin A language that Cucumber understands

Business Readable

Domain Specifc Language

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Cucumber Sotware Tool or testing other sotware

Automated acceptance tests

ritten in a beha!iour"dri!en de!elopment

st%le

ritten in Rub% programming language

Allows the e&ecution o eature documenta

ritten in Business"'acing Te&t

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Gherkin Describes sotware(s beha!iour without th

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Gherkin " -urpose Documentation

Automated Tests

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Gherkin . Bonus 'eature hen it %ells in red/ it(s talking to %ou

Telling %ou what code %ou should write

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Gherkin . Grammar Defned in the TreeTop grammar

-art o Cucumber Codebase

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Gherkin . S%nta&'eature0 Some terse %et descripti!e te&t o what is desired

Te&tual description o the business !alue o this eature

Business rules that go!ern the scope o the eatureAn% additional inormation that will make the eature easier to understand

Scenario0 Some determinable business situation

Gi!en some precondition

And some other precondition

hen some action b% the actor

And some other action

And %et another actionThen some testable outcome is achie!ed

And something else we can check happens too

Scenario0 A di1erent situation

222

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Gherkin . Gi!en hen ThenGi!en

A 3nown State beore the 4ser starts interacting S%stem

A!oid talking about 4ser 5nteraction

67ui!alent to -R6C+8D5T5+8S in 4S6 CAS6S

6&amples0 Create records #model instances$ 9 set up the database state2

5t(s ok to call into the la%er )inside, the 45 la%er here #in Rails0 t

models$2

Log in a user #An e&ception to the no"interaction recommendatio

)happened earlier, are ok$2

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Gherkin . Gi!en hen Thenhen

A 3nown State beore the 4ser starts interacting S%stem

A!oid talking about 4ser 5nteraction

67ui!alent to -R6C+8D5T5+8S in 4S6 CAS6S

6&amples0 Create records #model instances$ 9 set up the database state2

5t(s ok to call into the la%er )inside, the 45 la%er here #in Rails0 t

models$2

Log in a user #An e&ception to the no"interaction recommendatio

)happened earlier, are ok$2

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Gherkin . 'eature Defnition 6ach eature fle consists o a single eatur

Starts with ke%word 'eature 'eature contains a list o scenarios

6!er% scenario consists o a list o steps

6ach Scenario starts with one o the ke%wo Gi!en

hen Then

But

And

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Gherkin . 6&ample #;$Feature: 'ivision In order to avoid sill mista(es Cashiers must be able to calculate a raction

Scenario: )e*ular numbers + I have entered , into the calculator + I press divide

+ I have entered 2 into the calculator + I press e-ual + &he result should be 1. on the screen

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