How to create Unit tests on Function import srv.on event in SAP CAP

How to create Unit tests on Function import srv.on event in SAP CAP

Mahesh Raghavaraju
To create unit tests for a function that is imported from a service in SAP Cloud Application Programming model (CAP), you can follow these steps:

1. Open the file where the function is defined, and import the jest library at the top of the file.

import { jest } from 'jest';

1. Add a test block for the function using the test method from the jest library. This test block should include the name of the function and a callback function that contains the test logic.

test('myFunction', () => { // test logic goes here });

1. In the callback function, define the input data for the function and invoke the function with the input data.

const input = { /* input data */ }; const result = myFunction(input);

1. Use the expect method from the jest library to define the expected output for the function. Then, use the toEqual matcher to compare the actual output of the function with the expected output.

const expectedOutput = { /* expected output */ }; expect(result).toEqual(expectedOutput);

1. Run the unit tests using the jest command-line interface. This will execute all the test blocks and print the results to the console.

jest

It's important to note that the steps above are just an example of how to create unit tests for a function imported from a service in SAP CAP. The actual implementation may vary depending on your specific project. Additionally, you may need to import additional modules or utilities from the jest library to support the test logic for your function.