Function diffItems

test/checkArrayExpectation.js:139–163

(actual, expected, kind)

 * @returns {string} diff string
 */
const diffItems = (actual, expected, kind) => {
	const tooMuch = [...actual];
	const missing = [...expected];
	for (let i = 0; i < missing.length; i++) {
		const current = missing[i];
		for (let j = 0; j < tooMuch.length; j++) {
			if (check(current, tooMuch[j])) {
				tooMuch.splice(j, 1);
				missing.splice(i, 1);
				i--;
				break;
			}
		}
	}
	const diff = [];
	if (missing.length > 0) {
		diff.push(`The following expected ${kind}s are missing:
${missing.map((item) => `${explain(item)}`).join("\n\n")}`);
	}
	if (tooMuch.length > 0) {
		diff.push(`The following ${kind}s are unexpected:
${tooMuch.map((item) => `${explain(item)}`).join("\n\n")}`);
	}
	return diff.join("\n\n");
};

/**
 * @param {string} testDirectory test directory