assertsjs/__tests__/Asserts/assertType-test.js

ECMA6 Module for Javascript type validations

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

describe('Asserts.assertType tests', () => {
    it('Asserts.assertType should return the value', () => {
        const Asserts = require('./../../src/Asserts');
        const booleanType = 'boolean';
        const aBoolean = false;
        expect(aBoolean).toBe(Asserts.assertType(aBoolean, booleanType));
    });

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

    it('Asserts.assertType should return an error with wrong type', () => {
        const Asserts = require('./../../src/Asserts');
        const notAString = 1;
        const aString = false;
        const expectedMessageError = 'Assertion error: Type must be an string';
        try {
            Asserts.assertType(aString, notAString);
        } catch (error) {
            expect(expectedMessageError).toBe(error.message);
        }
    });
});