2019-07-18 Dev.to challenge

20190718.js

const makeRun = (v, {ofLength = 1} = {}) => Array.from({length: ofLength}, () => v).join("");

const hasTripleTrouble = (triple, double) => {
    const [tripleStr, doubleStr] = [triple, double].map(v => String(v));
    return (Array.from({length: 10}, (_, idx) => idx)
                 .some(digit => (tripleStr.indexOf(makeRun(digit, {ofLength: 3})) > -1
                              && doubleStr.indexOf(makeRun(digit, {ofLength: 2})) > -1)));
}

const testCases = [
    { args: [123, 12345],             result: false },
    { args: [1222245551, 1554223],    result: true  },
    { args: [451999277, 41177722899], result: true  },
    { args: [1222345, 12345],         result: false },
    { args: [12345, 12345],           result: false },
    { args: [666789, 12345667],       result: true  },
];

const testAllCases = (fn, cases) =>
    cases.map(({args, result}) => [`${args} -> ${result}`, fn(...args) === result])
         .filter(([_, pass]) => !pass);

const failures = testAllCases(hasTripleTrouble, testCases);
if (failures.length > 0) {
    throw new Error(JSON.stringify(failures), 2);
}