TanTan
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39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
'use strict';
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var test = require('tape');
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var isDate = require('../');
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var hasToStringTag = require('has-tostringtag/shams')();
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test('not Dates', function (t) {
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// @ts-expect-error
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t.notOk(isDate(), 'undefined is not Date');
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t.notOk(isDate(null), 'null is not Date');
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t.notOk(isDate(false), 'false is not Date');
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t.notOk(isDate(true), 'true is not Date');
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t.notOk(isDate(42), 'number is not Date');
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t.notOk(isDate('foo'), 'string is not Date');
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t.notOk(isDate([]), 'array is not Date');
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t.notOk(isDate({}), 'object is not Date');
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t.notOk(isDate(function () {}), 'function is not Date');
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t.notOk(isDate(/a/g), 'regex literal is not Date');
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t.notOk(isDate(new RegExp('a', 'g')), 'regex object is not Date');
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t.end();
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});
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test('@@toStringTag', { skip: !hasToStringTag }, function (t) {
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var realDate = new Date();
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/** @type {{ toString(): unknown; valueOf(): unknown; [Symbol.toStringTag]?: string; }} */
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var fakeDate = {
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toString: function () { return String(realDate); },
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valueOf: function () { return realDate.getTime(); }
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};
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fakeDate[Symbol.toStringTag] = 'Date';
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t.notOk(isDate(fakeDate), 'fake Date with @@toStringTag "Date" is not Date');
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t.end();
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});
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test('Dates', function (t) {
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t.ok(isDate(new Date()), 'new Date() is Date');
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t.end();
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});
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