AK-21/Graphite-Industrial-Intelligence

1'use strict';2 3var test = require('tape');4 5var getProto = require('../');6 7test('getProto', function (t) {8	t.equal(typeof getProto, 'function', 'is a function');9 10	t.test('can get', { skip: !getProto }, function (st) {11		if (getProto) { // TS doesn't understand tape's skip12			var proto = { b: 2 };13			st.equal(getProto(proto), Object.prototype, 'proto: returns the [[Prototype]]');14 15			st.test('nullish value', function (s2t) {16			// @ts-expect-error17				s2t['throws'](function () { return getProto(undefined); }, TypeError, 'undefined is not an object');18				// @ts-expect-error19				s2t['throws'](function () { return getProto(null); }, TypeError, 'null is not an object');20				s2t.end();21			});22 23			// @ts-expect-error24			st['throws'](function () { getProto(true); }, 'throws for true');25			// @ts-expect-error26			st['throws'](function () { getProto(false); }, 'throws for false');27			// @ts-expect-error28			st['throws'](function () { getProto(42); }, 'throws for 42');29			// @ts-expect-error30			st['throws'](function () { getProto(NaN); }, 'throws for NaN');31			// @ts-expect-error32			st['throws'](function () { getProto(0); }, 'throws for +0');33			// @ts-expect-error34			st['throws'](function () { getProto(-0); }, 'throws for -0');35			// @ts-expect-error36			st['throws'](function () { getProto(Infinity); }, 'throws for ∞');37			// @ts-expect-error38			st['throws'](function () { getProto(-Infinity); }, 'throws for -∞');39			// @ts-expect-error40			st['throws'](function () { getProto(''); }, 'throws for empty string');41			// @ts-expect-error42			st['throws'](function () { getProto('foo'); }, 'throws for non-empty string');43			st.equal(getProto(/a/g), RegExp.prototype);44			st.equal(getProto(new Date()), Date.prototype);45			st.equal(getProto(function () {}), Function.prototype);46			st.equal(getProto([]), Array.prototype);47			st.equal(getProto({}), Object.prototype);48 49			var nullObject = { __proto__: null };50			if ('toString' in nullObject) {51				st.comment('no null objects in this engine');52				st.equal(getProto(nullObject), Object.prototype, '"null" object has Object.prototype as [[Prototype]]');53			} else {54				st.equal(getProto(nullObject), null, 'null object has null [[Prototype]]');55			}56		}57 58		st.end();59	});60 61	t.test('can not get', { skip: !!getProto }, function (st) {62		st.equal(getProto, null);63 64		st.end();65	});66 67	t.end();68});69