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/home/yanggyein/yanggyein/yang_home/node_modules/type/test/date/is.js
"use strict"; var assert = require("chai").assert , isDate = require("../../date/is"); describe("date/is", function () { it("Should return true on date", function () { assert.equal(isDate(new Date()), true); }); it("Should return false on invalid date", function () { assert.equal(isDate(new Date("foo")), false); }); it("Should return false on native date with no common API exposed", function () { var value = new Date(); value.getFullYear = null; assert.equal(isDate(value), false); }); it("Should return false on Date.prototype", function () { assert.equal(isDate(Date.prototype), false); }); it("Should return false on time value", function () { assert.equal(isDate(12312313), false); }); it("Should return false on plain object", function () { assert.equal(isDate({}), false); }); it("Should return false on function", function () { assert.equal(isDate(function () { return true; }), false); }); it("Should return false on array", function () { assert.equal(isDate([]), false); }); if (typeof Object.create === "function") { it("Should return false on object with no prototype", function () { assert.equal(isDate(Object.create(null)), false); }); } it("Should return false on string", function () { assert.equal(isDate("foo"), false); }); it("Should return false on empty string", function () { assert.equal(isDate(""), false); }); it("Should return false on number", function () { assert.equal(isDate(123), false); }); it("Should return false on NaN", function () { assert.equal(isDate(NaN), false); }); it("Should return false on boolean", function () { assert.equal(isDate(true), false); }); if (typeof Symbol === "function") { it("Should return false on symbol", function () { assert.equal(isDate(Symbol("foo")), false); }); } it("Should return false on null", function () { assert.equal(isDate(null), false); }); it("Should return false on undefined", function () { assert.equal(isDate(void 0), false); }); });