source: imaps-frontend/node_modules/data-view-byte-length/test/index.js

'use strict';

var test = require('tape');
var forEach = require('for-each');
var v = require('es-value-fixtures');
var inspect = require('object-inspect');

var dataViewByteLength = require('../');

test('dataViewByteLength', function (t) {
        forEach(
                // @ts-expect-error TS sucks at [].concat
                // eslint-disable-next-line no-extra-parens
                /** @type {[...typeof v.primitives, ...typeof v.objects]} */ ([].concat(v.primitives, v.objects)),
                function (nonDV) {
                        t['throws'](function () { dataViewByteLength(nonDV); }, TypeError, inspect(nonDV) + ' is not a DataView');
                }
        );

        t.test('DataView', { skip: typeof DataView !== 'function' }, function (st) {
                var ab = new ArrayBuffer(42);
                var dv = new DataView(ab);

                st.equal(dataViewByteLength(dv), 42, inspect(dv) + ' has the same byteLength as the buffer originally passed to the DataView');
                st.equal(dataViewByteLength(dv), dv.buffer.byteLength, inspect(dv) + ' has the same byteLength as the buffer’s byteLength of its own buffer property');

                st.end();
        });

        t.end();
});