51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
'use strict';
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var test = require('tape');
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var inspect = require('object-inspect');
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var forEach = require('for-each');
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var v = require('es-value-fixtures');
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var availableTypedArrays = require('available-typed-arrays')();
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var isArrayBuffer = require('..');
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test('isArrayBuffer', function (t) {
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t.equal(typeof isArrayBuffer, 'function', 'is a function');
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/** @type {unknown[]} */
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var nonABs = [].concat(
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// @ts-expect-error TS sucks with [].concat
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v.primitives,
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v.objects,
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typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(0) : []
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);
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forEach(nonABs, function (nonAB) {
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t.equal(isArrayBuffer(nonAB), false, inspect(nonAB) + ' is not an ArrayBuffer');
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});
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t.test('actual ArrayBuffer instances', { skip: typeof ArrayBuffer === 'undefined' }, function (st) {
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// @ts-expect-error TS grumbles about 0 args
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var ab = new ArrayBuffer();
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st.equal(isArrayBuffer(ab), true, inspect(ab) + ' is an ArrayBuffer');
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var ab42 = new ArrayBuffer(42);
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st.equal(isArrayBuffer(ab42), true, inspect(ab42) + ' is an ArrayBuffer');
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var dv = new DataView(ab42);
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st.equal(isArrayBuffer(dv), false, inspect(dv) + ' is not an ArrayBuffer');
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st.end();
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});
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t.test('Typed Arrays', { skip: availableTypedArrays.length === 0 }, function (st) {
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forEach(availableTypedArrays, function (TypedArray) {
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var ta = new global[TypedArray](0);
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st.equal(isArrayBuffer(ta.buffer), true, inspect(ta.buffer) + ', the TA\'s buffer, is an ArrayBuffer');
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st.equal(isArrayBuffer(ta), false, inspect(ta) + ' is not an ArrayBuffer');
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});
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st.end();
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});
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t.end();
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});
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