72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
var Log = require('../../src/lib/log');
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var FileLogger = require('../../src/lib/loggers/file');
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var sinon = require('sinon');
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var once = require('events').EventEmitter.prototype.once;
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var write = require('stream').Writable.prototype.write;
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var MockWritableStream = require('../mocks/writable_stream');
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var _ = require('lodash');
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var parentLog;
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var fs = require('fs');
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beforeEach(function () {
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parentLog = new Log();
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});
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afterEach(function () {
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parentLog.close();
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});
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function makeLogger(parent, levels, path) {
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parent = parent || parentLog;
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var config = {
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levels: Log.parseLevels(levels || 'trace'),
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path: path === void 0 ? 'elasticsearch.log' : path
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};
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var logger = new FileLogger(parent, config);
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logger.stream.end();
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logger.stream = new MockWritableStream();
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return logger;
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}
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var stub = require('./auto_release_stub').make();
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describe('File Logger', function () {
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require('./generic_logger_tests')(makeLogger);
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describe('buffer flush', function () {
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it('writes everything in the buffer to console.error', function () {
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var line = 'This string is writte 10 times to create buffered output.\n';
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var exitHandler;
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stub(process, 'once', function (event, handler) {
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if (event === 'exit') {
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exitHandler = handler;
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}
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once.call(process, event, handler);
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});
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var logger = makeLogger();
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// write the line 10 times
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_.times(10, function () {
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logger.onDebug(line);
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});
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// collect everything that is written to fs.appendFileSync
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var flushedOutput = '';
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stub(fs, 'appendFileSync', function (path, str) {
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flushedOutput += str;
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});
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// call the event handler
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exitHandler.call(process);
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// the first line is sent immediately to _write and there is nothing we can do about that
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flushedOutput.match(new RegExp(line, 'g')).length.should.eql(9);
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});
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});
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});
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