assertsjs/__tests__/Asserts/assertString-text.js

ECMA6 Module for Javascript type validations

jest.unmock('./../../src/Asserts');

describe('Asserts.assert tests', () => {
    it('Asserts.assert should return the value', () => {
        const Asserts = require('./../../src/Asserts');
        const aString = 'String!';
        expect(aString).toBe(Asserts.assertString(aString));
    });

    it('Asserts.assert should return an error', () => {
        const Asserts = require('./../../src/Asserts');
        const notAString = false;
        const expectedMessageError = 'Assertion error: string must be provided';
        try {
            Asserts.assertString(notAString);
        } catch (error) {
            expect(expectedMessageError).toBe(error.message);
        }
    });
});