32 lines
1 KiB
JavaScript
32 lines
1 KiB
JavaScript
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'use strict';
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var test = require('tape');
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var forEach = require('for-each');
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var v = require('es-value-fixtures');
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var inspect = require('object-inspect');
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var dataViewByteLength = require('../');
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test('dataViewByteLength', function (t) {
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forEach(
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// @ts-expect-error TS sucks at [].concat
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// eslint-disable-next-line no-extra-parens
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/** @type {[...typeof v.primitives, ...typeof v.objects]} */ ([].concat(v.primitives, v.objects)),
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function (nonDV) {
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t['throws'](function () { dataViewByteLength(nonDV); }, TypeError, inspect(nonDV) + ' is not a DataView');
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}
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);
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t.test('DataView', { skip: typeof DataView !== 'function' }, function (st) {
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var ab = new ArrayBuffer(42);
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var dv = new DataView(ab);
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st.equal(dataViewByteLength(dv), 42, inspect(dv) + ' has the same byteLength as the buffer originally passed to the DataView');
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st.equal(dataViewByteLength(dv), dv.buffer.byteLength, inspect(dv) + ' has the same byteLength as the buffer’s byteLength of its own buffer property');
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st.end();
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});
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t.end();
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});
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