-> During the Automation Execution users need some information about the Execution steps in console.
-> We need information which helps the users to understand the testcase or any failure during the testcase execution.
-> With the help of Log4j its possible to enable logging in selenium testcase.
Follow the below steps to implement logs
1) Log4j Download
Download Log4j by using this link -> https://logging.apache.org/log4j/1.2/download.html
2) Create Log4j.properties file
-> Log4j.properties file for display log message only in console
# Root logger option
log4j.rootLogger=INFO,stdout
# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
->Log4j.propertiesfiles for display log message only in file
# Root logger option
log4j.rootLogger=INFO,file
# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./Log/log_${current.date}.log
log4j.appender.fileout.Append=false
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.Append=false
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
->Log4j.propertiesfiles for display log message in both console and File
# Root logger option
log4j.rootLogger=INFO,stdout, file
# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./Log/log_${current.date}.html
log4j.appender.fileout.Append=false
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.Append=false
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
-> Load properties file in Main()
Initial Environment variable (Current.date) which is used in Log4j.properties file and load Log4j.properties file.
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd hh_mm_ss");
System.setProperty("current.date", dateFormat.format(new Date()));
PropertyConfigurator.configure("C:/Selenium/log4j.properties");
-> create log for required class files
public class Login {
final static Logger logger = Logger.getLogger(Login.class);
public static boolean LoginGmail(){
logger.info("Information Message");
logger.debug("Warning Message");
logger.error("Error Message");
}
}
-> Best practise for use logger
logger.info = Instead of Sysout we can use looger.info
logger.debug = use inside of conditional Statments and looping statments.
logger.error = use inside catch block.
-> LoGGER Level
See the link for logger level -> http://arunrajvdm.blogspot.in/2016/12/log4j-how-to-disable-all-log-details.html
