@practica/create-node-app/src/code-templates/libraries/global-context/test/request-context.test.ts

Create Node.js app that is packed with best practices AND strive for simplicity

import sinon from 'sinon';
import { context } from '../index';

describe('request-context', () => {
  test('When instantiating a new context with initial values, then should get back the context', () => {
    // Arrange
    const getCurrentRequestContext = sinon.spy(() => context().getStore());

    const initialContext = { requestId: 'a' };

    // Act
    context().run({ ...initialContext }, getCurrentRequestContext);

    // Assert
    expect({
      getStoreSpyReturnValue: getCurrentRequestContext.returnValues[0],
    }).toEqual({
      getStoreSpyReturnValue: initialContext,
    });
  });

  test('When instantiating a new context and putting a key, then get back the key value', () => {
    // Arrange
    const getCurrentRequestContext = sinon.spy(() => context().getStore());

    // Act
    context().run({}, () => {
      context().getStore().requestId = 'a';

      getCurrentRequestContext();
    });

    // Assert
    expect({
      getStoreSpyReturnValue: getCurrentRequestContext.returnValues[0],
    }).toEqual({
      getStoreSpyReturnValue: {
        requestId: 'a',
      },
    });
  });
});