Merge pull request #469 from deniswolf/redis-refactoring

Use separate db for testing

mocks/redismock.js

@@ -0,0 +1,69 @@
+/**
+ * Redis Mock - wrapper for redis.js, makes system use separate test db, instead of production
+ * ATTENTION: testing db is flushed before every use!
+ */
+
+(function(module) {
+	'use strict';
+
+	var RedisDB,
+		redis = require('redis'),
+		utils = require('./../public/src/utils.js'),
+		path  = require('path'),
+		nconf = require('nconf'),
+		winston = require('winston'),
+		errorText;
+
+
+	nconf.file({ file: path.join(__dirname, '../config.json') });
+
+	var testDbConfig = nconf.get('redis_test'),
+		productionDbConfig = nconf.get('redis');
+	if(!testDbConfig){
+		errorText = 'redis_test database is not defined';
+		winston.info(
+			"\n===========================================================\n"+
+			"Please, add parameters for test database in config.js\n"+
+			"For example:\n"+
+				'"redis_test": {' + '\n' +
+				'   "host": "127.0.0.1",' + '\n' +
+				'   "port": "6379",' + '\n' +
+				'   "password": "",' + '\n' +
+				'   "database": "1"' + '\n' +
+			'}\n'+
+			"==========================================================="
+		);
+		winston.error(errorText);
+		throw new Error(errorText);
+	}
+
+	if(	testDbConfig.database === productionDbConfig.database &&
+		testDbConfig.host === productionDbConfig.host &&
+		testDbConfig.port === productionDbConfig.port
+	){
+		errorText = 'redis_test database has the same config as production db';
+		winston.error(errorText);
+		throw new Error(errorText);
+	}
+
+	nconf.set('redis',testDbConfig);
+
+	RedisDB = require('../src/redis.js');
+
+
+	//Clean up
+	RedisDB.send_command('flushdb', [], function(error){
+		if(error){
+			winston.error(error);
+			throw new Error(error);
+		} else {
+			winston.info('redis_test db flushed');
+		}
+	});
+
+	//TODO: data seeding, if needed at all
+
+
+	module.exports = RedisDB;
+
+}(module));

src/redis.js

@@ -1,5 +1,8 @@
-(function(RedisDB) {
+(function(module) {
-	var redis = require('redis'),
+	'use strict';
+
+	var RedisDB,
+		redis = require('redis'),
 		utils = require('./../public/src/utils.js'),
 		winston = require('winston'),
 		nconf = require('nconf'),
@@ -7,18 +10,19 @@
 
 	if (redis_socket_or_host && redis_socket_or_host.indexOf('/')>=0) {
 		/* If redis.host contains a path name character, use the unix dom sock connection. ie, /tmp/redis.sock */
-		RedisDB.exports = redis.createClient(nconf.get('redis:host'))
+		RedisDB = redis.createClient(nconf.get('redis:host'));
 	} else {
 		/* Else, connect over tcp/ip */
-		RedisDB.exports = redis.createClient(nconf.get('redis:port'), nconf.get('redis:host'));
+		RedisDB = redis.createClient(nconf.get('redis:port'), nconf.get('redis:host'));
 	}
 
 	if (nconf.get('redis:password')) {
-		RedisDB.exports.auth(nconf.get('redis:password'));
+		RedisDB.auth(nconf.get('redis:password'));
 	}
 
-	if( (db = nconf.get('redis:database')) ){
+	var db = nconf.get('redis:database');
-		RedisDB.exports.select(db, function(error){
+	if (db){
+		RedisDB.select(db, function(error){
 			if(error !== null){
 				winston.err(error);
 				if (global.env !== 'production') {
@@ -28,24 +32,24 @@
 		});
 	}
 
-	RedisDB.exports.handle = function(error) {
+	RedisDB.handle = function(error) {
 		if (error !== null) {
 			winston.err(error);
 			if (global.env !== 'production') {
 				throw new Error(error);
 			}
 		}
-	}
+	};
 
 
 	/*
 	 * A possibly more efficient way of doing multiple sismember calls
 	 */
-	RedisDB.exports.sismembers = function(key, needles, callback) {
+	RedisDB.sismembers = function(key, needles, callback) {
 		var tempkey = key + ':temp:' + utils.generateUUID();
-		RedisDB.exports.sadd(tempkey, needles, function() {
+		RedisDB.sadd(tempkey, needles, function() {
-			RedisDB.exports.sinter(key, tempkey, function(err, data) {
+			RedisDB.sinter(key, tempkey, function(err, data) {
-				RedisDB.exports.del(tempkey);
+				RedisDB.del(tempkey);
 				callback(err, data);
 			});
 		});
@@ -54,8 +58,8 @@
 	/*
 	 * gets fields of a hash as an object instead of an array
 	 */
-	RedisDB.exports.hmgetObject = function(key, fields, callback) {
+	RedisDB.hmgetObject = function(key, fields, callback) {
-		RedisDB.exports.hmget(key, fields, function(err, data) {
+		RedisDB.hmget(key, fields, function(err, data) {
 			if (err === null) {
 				var returnData = {};
 
@@ -69,8 +73,8 @@
 				callback(err, null);
 			}
 		});
-	}
+	};
-
 
+	module.exports = RedisDB;
 
 }(module));

tests/categories.js

@@ -1,16 +1,13 @@
 // this test currently needs to talk to the redis database.
 // get the redis config info from root directory's config.json:
-var path = require('path'),
+var winston = require('winston');
-	nconf = require('nconf'),
-	winston = require('winston');
-nconf.file({ file: path.join(__dirname, '../config.json') });
 
 process.on('uncaughtException', function (err) {
 	winston.error('Encountered error while running test suite: ' + err.message);
 });
 
 var	assert = require('assert'),
-	RDB = require('../src/redis');
+	RDB = require('../mocks/redismock');
 
 // Reds is not technically used in this test suite, but its invocation is required to stop the included
 // libraries from trying to connect to the default Redis host/port

tests/redis.js

@@ -0,0 +1,10 @@
+var	assert = require('assert');
+
+
+describe('Test database', function() {
+	it('should work', function(){
+		assert.doesNotThrow(function(){
+			var RDB = require('../mocks/redismock');
+		});
+	});
+});