LWC jest mock custom permission: jest.mock( "@salesforce/customPermission/my-custom-permission",

Question

I am mocking custom permission successfully like this:

jest.mock(
    "@salesforce/customPermission/my-custom-permission",
    () => {
        return {
            default: true
        }; 
    },
    { virtual: true }
);

In another test of the same component I would like to change return value of this mock or clear only this mock. I have tried to mockReturnValue, mockImplementation and everything I could find from the documentations. Does anyone have an idea how this could be solved?

Thanks!!

Answer 1

The lwc-recipes shows using different test classes to test different values of the imported permission. It shows

• miscPermissionBasedUI.negative.test.js
• miscPermissionBasedUI.test.js

Where the negative version sets the mocked import to return false.

jest.mock(
    '@salesforce/customPermission/accessRestrictedUIPermission',
    () => ({
        __esModule: true,
        default: false
    }),
    { virtual: true }
);

and the other test sets it to true.

jest.mock(
    '@salesforce/customPermission/accessRestrictedUIPermission',
    () => ({
        __esModule: true,
        default: true
    }),
    { virtual: true }
);