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const { test } = Deno;import { assert } from "../testing/asserts.ts";import * as util from "./util.ts";
test({  name: "[util] isBoolean",  fn() {    assert(util.isBoolean(true));    assert(util.isBoolean(new Boolean()));    assert(util.isBoolean(new Boolean(true)));    assert(util.isBoolean(false));    assert(!util.isBoolean("deno"));    assert(!util.isBoolean("true"));  }});
test({  name: "[util] isNull",  fn() {    let n;    assert(util.isNull(null));    assert(!util.isNull(n));    assert(!util.isNull(0));    assert(!util.isNull({}));  }});
test({  name: "[util] isNullOrUndefined",  fn() {    let n;    assert(util.isNullOrUndefined(null));    assert(util.isNullOrUndefined(n));    assert(!util.isNullOrUndefined({}));    assert(!util.isNullOrUndefined("undefined"));  }});
test({  name: "[util] isNumber",  fn() {    assert(util.isNumber(666));    assert(util.isNumber(new Number(666)));    assert(!util.isNumber("999"));    assert(!util.isNumber(null));  }});
test({  name: "[util] isString",  fn() {    assert(util.isString("deno"));    assert(util.isString(new String("DIO")));    assert(!util.isString(1337));  }});
test({  name: "[util] isSymbol",  fn() {    assert(util.isSymbol(Symbol()));    assert(!util.isSymbol(123));    assert(!util.isSymbol("string"));  }});
test({  name: "[util] isUndefined",  fn() {    let t;    assert(util.isUndefined(t));    assert(!util.isUndefined("undefined"));    assert(!util.isUndefined({}));  }});
test({  name: "[util] isObject",  fn() {    const dio = { stand: "Za Warudo" };    assert(util.isObject(dio));    assert(util.isObject(new RegExp(/Toki Wo Tomare/)));    assert(!util.isObject("Jotaro"));  }});
test({  name: "[util] isError",  fn() {    const java = new Error();    const nodejs = new TypeError();    const deno = "Future";    assert(util.isError(java));    assert(util.isError(nodejs));    assert(!util.isError(deno));  }});
test({  name: "[util] isFunction",  fn() {    const f = function(): void {};    assert(util.isFunction(f));    assert(!util.isFunction({}));    assert(!util.isFunction(new RegExp(/f/)));  }});
test({  name: "[util] isRegExp",  fn() {    assert(util.isRegExp(new RegExp(/f/)));    assert(util.isRegExp(/fuManchu/));    assert(!util.isRegExp({ evil: "eye" }));    assert(!util.isRegExp(null));  }});
test({  name: "[util] isArray",  fn() {    assert(util.isArray([]));    assert(!util.isArray({ yaNo: "array" }));    assert(!util.isArray(null));  }});