js-test/SumTestSuite.js

'use strict';

const assert = require('assert');
const { sum } = require('./sum');

class SumTestSuite {
    testSumCorrectness() { 
        const a = 1;
        const b = 2;
        const result = sum(a, b);
        assert(result === a + b, 'the result should be the sum of its arguments');
    }

    testSumNoArgs() {
        try {
            sum();        
        } catch {
            return;
        }
        assert.fail('should fail if not provided any arguments');
    }

    testSumMissingArg() {
        const a = 1;
        try {
            sum(a);        
        } catch {
            return;
        }
        assert.fail('should fail if not provided all arguments');
    }

    testWillFail() {
        assert.fail('I have failed!');
    }
}

module.exports = {
    SumTestSuite,
}