Quality of services demonstrates commitment, leads to customer satisfaction and builds trust.
Harmonious and intuitive designed product plays a crucial role in ensuring a positive customer experience.
In this blog, we’re going to unpack a promising method that might assist us in accomplishing our goal.

Before presenting the CAP’s contribution, let’s start by giving a quick introduction to the involved components and technologies.

CAP

https://cap.cloud.sap/docs/
CAP applications consists of CDS model, service with database access and UI (graphical user interface).
A CAP service can support several protocols like OData, Rest, GraphQL.
The UI can use any framework that works with any of the mentioned service protocols.
SAP UI5 with SAP Fiori® Elements is first class citizen as it is well integrated with the CDS model and supports several paradigms offered by CAP.

What is “Cucumber”?

https://cucumber.io/
“Cucumber” is a tool that is used to validate features of software systems.
It empowers BDD as a development life-cycle. The collaborators write specifications in human-readable format using the Gherkin language (Given-When-Then) while describing how the system behaves.
The “Cucumber” module can understand the specifications and evaluate them just like tests that are validating the system features.

Steps library cds-cucumber

https://cap-js-community.github.io/cds-cucumber/
CAP provides a library with ready-to-use steps for writing specifications utilizing the “cucumber” module.
The cds-cucumber library covers SAP Fiori® Elements and in addition the OData protocol.
It is deeply integrated with CAP providing Service-Lifecycle-Management like: process initialization, port assigning, directory management, browser control, authentication. The OData part has knowledge of the service names, entities and fields as it works directly with the CDS model.
The documentation of all steps with short examples is available under the following link: API

Using the cds-cucumber module

https://cap-js-community.github.io/cds-cucumber/#usage

• In case you do not have already a CAP application, install cds-dk and create a sample application

npm i -g @sap/cds-dk
cds init --add sample bookshop
cd bookshop

• install and configure the CAP cds-cucumber library

npm i -D @cap-js-community/cds-cucumber
npx cds-add-cucumber

• write specifications or use the already generated ones contained in the samples CAP app
  File: test/features/first.feature

Feature: Bookshop first feature file
  Scenario: Open "Manage Books" as "alice" and search for "jane"
    Given we have started the CAP application
      And we have opened the url "/" with user "alice"
    When we select tile "Manage Books"
      And we search for "jane"
    Then we expect to have 2 table records

• run the tests

npx cucumber-js test