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The values defined by the referenced files are not used by these tests. This makes their inclusion superfluous, which needlessly increases the time to execute the tests and may confuse some readers.
40 lines
1.6 KiB
JavaScript
40 lines
1.6 KiB
JavaScript
// Copyright (C) 2018 Andrew Paprocki. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-date.parse
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description: >
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Date.parse return value is limited to specified time value maximum range
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info: |
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Date.parse ( string )
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parse interprets the resulting String as a date and time; it returns a
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Number, the UTC time value corresponding to the date and time.
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A Date object contains a Number indicating a particular instant in time to
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within a millisecond. Such a Number is called a time value.
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The actual range of times supported by ECMAScript Date objects is slightly
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smaller: exactly -100,000,000 days to 100,000,000 days measured relative to
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midnight at the beginning of 01 January, 1970 UTC. This gives a range of
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8,640,000,000,000,000 milliseconds to either side of 01 January, 1970 UTC.
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---*/
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const minDateStr = "-271821-04-20T00:00:00.000Z";
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const minDate = new Date(-8640000000000000);
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assert.sameValue(minDate.toISOString(), minDateStr, "minDateStr");
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assert.sameValue(Date.parse(minDateStr), minDate.valueOf(), "parse minDateStr");
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const maxDateStr = "+275760-09-13T00:00:00.000Z";
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const maxDate = new Date(8640000000000000);
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assert.sameValue(maxDate.toISOString(), maxDateStr, "maxDateStr");
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assert.sameValue(Date.parse(maxDateStr), maxDate.valueOf(), "parse maxDateStr");
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const belowRange = "-271821-04-19T23:59:59.999Z";
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const aboveRange = "+275760-09-13T00:00:00.001Z";
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assert.sameValue(Date.parse(belowRange), NaN, "parse below minimum time value");
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assert.sameValue(Date.parse(aboveRange), NaN, "parse above maximum time value");
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