PLT-6113 Added initial unit tests for cmd package (#6086)

* Fixed app.CreateUser not using the provided locale

* Added initial unit tests for cmd package

* Disabled unit tests while we move to 'go build'

cmd/platform/userargs_test.go.disabled

@@ -0,0 +1,58 @@
+// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package main
+
+import (
+	"testing"
+
+	"github.com/mattermost/platform/app"
+	"github.com/mattermost/platform/model"
+)
+
+func TestGetUserFromUserArg(t *testing.T) {
+	th := app.Setup().InitBasic()
+
+	user := th.BasicUser
+
+	if found := getUserFromUserArg(""); found != nil {
+		t.Fatal("shoudn't have gotten a user", found)
+	}
+
+	if found := getUserFromUserArg(model.NewId()); found != nil {
+		t.Fatal("shoudn't have gotten a user", found)
+	}
+
+	if found := getUserFromUserArg(user.Id); found == nil || found.Id != user.Id {
+		t.Fatal("got incorrect user", found)
+	}
+
+	if found := getUserFromUserArg(user.Username); found == nil || found.Id != user.Id {
+		t.Fatal("got incorrect user", found)
+	}
+}
+
+func TestGetUsersFromUserArg(t *testing.T) {
+	th := app.Setup().InitBasic()
+
+	user := th.BasicUser
+	user2 := th.CreateUser()
+
+	if found := getUsersFromUserArgs([]string{}); len(found) != 0 {
+		t.Fatal("shoudn't have gotten any users", found)
+	}
+
+	if found := getUsersFromUserArgs([]string{user.Id}); len(found) == 1 && found[0].Id != user.Id {
+		t.Fatal("got incorrect user", found)
+	}
+
+	if found := getUsersFromUserArgs([]string{user2.Username}); len(found) == 1 && found[0].Id != user2.Id {
+		t.Fatal("got incorrect user", found)
+	}
+
+	if found := getUsersFromUserArgs([]string{user.Username, user2.Id}); len(found) != 2 {
+		t.Fatal("got incorrect number of users", found)
+	} else if !(found[0].Id == user.Id && found[1].Id == user2.Id) && !(found[1].Id == user.Id && found[0].Id == user2.Id) {
+		t.Fatal("got incorrect users", found[0], found[1])
+	}
+}