Testing

Test connectivity for the web service

Connection test

user client node

browser & device issue

Browser version: Check Browser Compatibility & Validation service or Validator: Check Markup or CSS syntax
Multiple screen resolution test: 不同螢幕解析度檢視網頁
Mobile friendliness tool
Disable all extensions
Clear browser cache by Bypass your cache (繞過瀏覽器快取)
- Client temporary files
- Google Chrome: How to Disable Cache
Clear server cache ex: Smarty Caching

Online IDE

Programming online (Online IDE)

browser plug-ins issue

e-mail testing issue

Email testing

monitoring the status or changes of files or registry

monitoring or generating the HTTP request sent to the server

HTTP request and response data tool

domain name issue

Modify the following files if you want to test the domain name before the mapping of domain name and ip was changed really

C:\WINDOWS\system32\drivers\etc\hosts for Win XP, Win7^[1], Win 10 & Windows Server 2008 R2 Standard
On Windows 2003 server: edit the file located at C:\WINNT\system32\drivers\etc\hosts
On Linux , input the command sudo vi /etc/hosts

127.0.0.1       localhost
# ip            domain.com

On macOS , input the command sudo vi /private/etc/hosts ^[2]

Clear the DNS cache

How Do I Clear My DNS Cache on Windows? | Support | No-IP for Win
Reset the DNS cache in OS X - Apple Support for macOS

handling form data

before submit the form data

(1)Use the Web Developer plugin for Firefox and (2)Menu -> Forms -> Display form details

after submit the form data

PHP var_dump $_POST 或 $_GET
.serialize() | jQuery API Documentation

login issues into different accounts

If you need to clear the cookie frequently for the testing account issue

Using the privacy browsing for Firefox & Chrome . Each time you turning on the privacy browsing, the logged status and cookie will not saved.^[3]
Manually clear cookie and temporary files of browser

file upload

Generate a File - Fake File Generator allow to specify the filesize

excel format compatibility

Using Microsoft Excel Viewer to check the excel format compatibility. It's not save to check the excel file only by using the old version of Excel.

database issue

SQL
- SQL Fiddle support MySQL, MS SQL, Oracle, PosgreSQL, SQLite ...

server environment

Testing server environment

local server node (if you has permission to log in the server via SSH or Remote desktop service)

check the server/service logs

OS

Microsoft Windows

- XP / Vista: 控制台 --> 系統管理工具 --> 事件檢視器
- 事件和錯誤訊息中心: 基本搜尋

Web server

Apache

Apache HTTP server log: /etc/httpd/logs (location was set up in the configuration file /etc/httpd/conf/httpd.conf)

access.log
error.log - record when the apache service restarted/stopped

Using grep command to search the logs: grep -ir "string to search" /path/to/directory. More on Search text in files

IIS

Microsoft Internet Information Services (IIS) log (記錄檔)^[4]

C:\WINDOWS\system32\LogFiles\

Database server

MySQL

MySQL Server Logs:

step1: verify the system variable^[5]

mysql> SHOW VARIABLES LIKE '%general_log%';
mysql> SHOW GLOBAL VARIABLES LIKE '%general_log%';

step2: enable logging /var/log/mysql.log (location was set up in the configuration file /etc/my.cnf or my.ini) ^[6]

[mysqld] 
## includes all SQL queries/commands
# general_log = 1
# general_log_file="general_log_file.log"
log-error=/var/log/mysql/error.log
log-slow-queries = /var/log/mysql/mysql-slow.log
#another syntax
#slow_query_log_file = mysql-slow.log
long_query_time = 1
log-long-format

step3: restart MySQL service

Microsoft SQL Server

ExpressProfiler includes all SQL queries/commands
SQL Server Error Log / 檢視 SQL Server 錯誤記錄 "contains user-defined events and certain system events ..." quoted from SQL Server Error Log ex: X:\Program Files\Microsoft SQL Server\MSSQL10.SQLEXPRESS\MSSQL\Log\ERRORLOG
Logging ALL Queries on a SQL Server 2008 Express Database? - Stack Overflow not tested

Other

PHP

PHP_errors#logging

Java

System.out.println("Boston, We Have A Problem" + variable); //output to Tomcat consile
out.println("Boston, We Have A Problem" + variable); //output to JSP webpage

or using NetBeans IDE - Debugger and Profiler to setup the breakpoints.

console command

//write the console output to the file
command > log.txt

//append to the same file
command >> log.txt

find match string

grep 'string' filename -r
- manual, 教學

Desktop search: Search text in files

If the message text or code snippets was not found in the plain text files, it may stored in the database.