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// Flags: --expose_internals
'use strict';
require('../common');
var assert = require('assert');
var fromList = require('_stream_readable')._fromList;
var BufferList = require('internal/streams/BufferList');
// tiny node-tap lookalike.
var tests = [];
var count = 0;
function test(name, fn) {
count++;
tests.push([name, fn]);
}
function run() {
var next = tests.shift();
if (!next)
return console.error('ok');
var name = next[0];
var fn = next[1];
console.log('# %s', name);
fn({
same: assert.deepEqual,
equal: assert.equal,
end: function() {
count--;
run();
}
});
}
function bufferListFromArray(arr) {
const bl = new BufferList();
for (var i = 0; i < arr.length; ++i)
bl.push(arr[i]);
return bl;
}
// ensure all tests have run
process.on('exit', function() {
assert.equal(count, 0);
});
process.nextTick(run);
test('buffers', function(t) {
var list = [ Buffer.from('foog'),
Buffer.from('bark'),
Buffer.from('bazy'),
Buffer.from('kuel') ];
list = bufferListFromArray(list);
// read more than the first element.
var ret = fromList(6, { buffer: list, length: 16 });
t.equal(ret.toString(), 'foogba');
// read exactly the first element.
ret = fromList(2, { buffer: list, length: 10 });
t.equal(ret.toString(), 'rk');
// read less than the first element.
ret = fromList(2, { buffer: list, length: 8 });
t.equal(ret.toString(), 'ba');
// read more than we have.
ret = fromList(100, { buffer: list, length: 6 });
t.equal(ret.toString(), 'zykuel');
// all consumed.
t.same(list, new BufferList());
t.end();
});
test('strings', function(t) {
var list = [ 'foog',
'bark',
'bazy',
'kuel' ];
list = bufferListFromArray(list);
// read more than the first element.
var ret = fromList(6, { buffer: list, length: 16, decoder: true });
t.equal(ret, 'foogba');
// read exactly the first element.
ret = fromList(2, { buffer: list, length: 10, decoder: true });
t.equal(ret, 'rk');
// read less than the first element.
ret = fromList(2, { buffer: list, length: 8, decoder: true });
t.equal(ret, 'ba');
// read more than we have.
ret = fromList(100, { buffer: list, length: 6, decoder: true });
t.equal(ret, 'zykuel');
// all consumed.
t.same(list, new BufferList());
t.end();
});