Add basic unit test file for users

After learning today that testing the leaves is more important, some
fixing for the unit test coverage towards users. Time to do better.

test/user.js

@@ -0,0 +1,54 @@
+const assert = require('assert');
+const User = require("../src/user.js");
+
+describe('User', function () {
+    describe('#contructor()', function () {
+        it("should create a user while no password is required", function () {
+            let mockedSock = {}
+            const user = new User(mockedSock, true)
+            assert.equal(typeof user, 'object')
+        })
+
+        it("should create a user while password is required", function () {
+            let mockedSock = {}
+            const user = new User(mockedSock, false)
+            assert.equal(typeof user, 'object')
+        })
+    })
+
+    describe('#sendMsg(from, message)', function() {
+        it("should send a message to the user's socket", function (done) {
+            let mockedSock = {write: function (data) {
+                assert.equal(data, ":some_nick PRIVMSG some_nick :test message\r\n")
+                done()
+            }}
+            const user = new User(mockedSock, true)
+            user.setNickname("some_nick")
+            user.register("some_nick")
+            user.sendMsg(user, "test message")
+        })
+    })
+
+    describe('#sendRaw(message)', function() {
+        it("should send a raw command to the user's socket", function(done) {
+            let mockedSock = {write: function (data) {
+                assert.equal(data, ":irc.example.com TEST this :command with parameters\r\n")
+                done()
+            }}
+            const user = new User(mockedSock, true)
+            user.setNickname("some_nick")
+            user.register("some_nick")
+            user.sendRaw(":irc.example.com TEST this :command with parameters")
+        })
+    })
+
+    describe('#closeConnection()', function() {
+        it("should call destroy on user's socket", function(done) {
+            let mockedSock = {destroy: function () {
+                done()
+            }}
+            const user = new User(mockedSock, true)
+            user.closeConnection()
+        })
+    })
+})