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'use strict';
var common = require('../common');
var assert = require('assert');
var path = require('path');
var fs = require('fs');
var util = require('util');
var filepath = path.join(common.tmpDir, 'write.txt');
var file;
var EXPECTED = '012345678910';
var cb_expected = 'write open drain write drain close error ';
var cb_occurred = '';
var countDrains = 0;
process.on('exit', function() {
removeTestFile();
if (cb_occurred !== cb_expected) {
console.log(' Test callback events missing or out of order:');
console.log(' expected: %j', cb_expected);
console.log(' occurred: %j', cb_occurred);
assert.strictEqual(cb_occurred, cb_expected,
'events missing or out of order: "' +
cb_occurred + '" !== "' + cb_expected + '"');
} else {
console.log('ok');
}
});
function removeTestFile() {
try {
fs.unlinkSync(filepath);
} catch (e) {}
}
common.refreshTmpDir();
// drain at 0, return false at 10.
file = fs.createWriteStream(filepath, {
highWaterMark: 11
});
file.on('open', function(fd) {
console.error('open');
cb_occurred += 'open ';
assert.equal(typeof fd, 'number');
});
file.on('drain', function() {
console.error('drain');
cb_occurred += 'drain ';
++countDrains;
if (countDrains === 1) {
console.error('drain=1, write again');
assert.equal(fs.readFileSync(filepath, 'utf8'), EXPECTED);
console.error('ondrain write ret=%j', file.write(EXPECTED));
cb_occurred += 'write ';
} else if (countDrains == 2) {
console.error('second drain, end');
assert.equal(fs.readFileSync(filepath, 'utf8'), EXPECTED + EXPECTED);
file.end();
}
});
file.on('close', function() {
cb_occurred += 'close ';
assert.strictEqual(file.bytesWritten, EXPECTED.length * 2);
file.write('should not work anymore');
});
file.on('error', function(err) {
cb_occurred += 'error ';
assert.ok(err.message.indexOf('write after end') >= 0);
});
for (var i = 0; i < 11; i++) {
var ret = file.write(i + '');
console.error('%d %j', i, ret);
// return false when i hits 10
assert(ret === (i != 10));
}
cb_occurred += 'write ';
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