Content:
Time in 12-Hour Format Regular Expression Pattern
(1[012]|[1-9]):[0-5][0-9](\\s)?(?i)(am|pm)
Description
(#start of group #1
1[012]# start with10,11,12
| # or
[1-9]# start with1,2,...9
)#end of group #1
:# follow by a semi colon(:)
[0-5][0-9]# follw by0..5and0..9,which means00to59
(\\s)?# follow by a white space(optional)
(?i)# next checking iscaseinsensitive
(am|pm)# follow by am or pm
Code :
package com.codewr.javacore.regular.expression;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
*
* @author codewr
*/
public class Time12HoursValidator {
private static final String TIME12HOURS_PATTERN
= "(1[012]|[1-9]):[0-5][0-9](\\s)?(?i)(am|pm)";
public static void main(String[] args) {
Time12HoursValidator time12HoursValidator = new Time12HoursValidator();
//check time validate
boolean isValid = time12HoursValidator.validate("1:00pm");
System.out.println("time valid is " + isValid);
}
/**
* Validate time with regular expression
*
* @param time time for validation
* @return true valid time, false invalid time
*/
public boolean validate(final String time) {
Pattern pattern = Pattern.compile(TIME12HOURS_PATTERN);
Matcher matcher = pattern.matcher(time);
return matcher.matches();
}
}
Code UnitTest:
Time valid
1. “1:00am”, “1:00 am”,”1:00 AM” ,
2. “1:00pm”, “1:00 pm”, “1:00 PM”,
3. “12:50 pm”
Time invalid
1. “0:00 am” – hour is out of range [1-12]
2. “10:00 am” – only one white space is allow
3. “1:00” – must end with am or pm
4. “23:00 am” -24-hour format is not allow
5. “1:61 pm” – minute is out of range [0-59]
6. “13:00 pm” – hour is out of range [1-12]
7. “001:50 pm” – invalid hour format
8. “10:99 am” – minute is out of range [0-59]
9. “01:00 pm” – 24-hour format is not allow
10. “1:00 bm” – must end with am or pm
import com.codewr.javacore.regular.expression.Time12HoursValidator;
import org.testng.Assert;
import org.testng.annotations.*;
/**
* Time 12 hours format validator Testing
*
* @author codewr
*
*/
public class Time12HoursValidatorTest {
private Time12HoursValidator time12HoursValidator;
@BeforeClass
public void initData() {
time12HoursValidator = new Time12HoursValidator();
}
@DataProvider
public Object[][] ValidTime12HoursProvider() {
return new Object[][]{
new Object[]{"1:00am"}, new Object[]{"1:00 am"},
new Object[]{"1:00 AM"}, new Object[]{"1:00pm"},
new Object[]{"1:00 pm"}, new Object[]{"1:00 PM"},
new Object[]{"12:50 pm"}
};
}
@DataProvider
public Object[][] InvalidTime12HoursProvider() {
return new Object[][]{
new Object[]{"0:00 am"}, new Object[]{"10:00 am"},
new Object[]{"1:00"}, new Object[]{"23:00 am"},
new Object[]{"1:61 pm"}, new Object[]{"13:00 pm"},
new Object[]{"001:50 pm"}, new Object[]{"10:99 am"},
new Object[]{"01:00 pm"}, new Object[]{"1:00 bm"}
};
}
@Test(dataProvider = "ValidTime12HoursProvider")
public void ValidTime12HoursTest(String time) {
boolean valid = time12HoursValidator.validate(time);
System.out.println("Time12Hours is valid : " + time + " , " + valid);
Assert.assertEquals(true, valid);
}
@Test(dataProvider = "InvalidTime12HoursProvider",
dependsOnMethods = "ValidTime12HoursTest")
public void InValidTime12HoursTest(String time) {
boolean valid = time12HoursValidator.validate(time);
System.out.println("Time12Hours is valid : " + time + " , " + valid);
Assert.assertEquals(false, valid);
}
}
Output:
Running Time12HoursValidatorTest
Time12Hours is valid : 1:00am , true
Time12Hours is valid : 1:00 am , true
Time12Hours is valid : 1:00 AM , true
Time12Hours is valid : 1:00pm , true
Time12Hours is valid : 1:00 pm , true
Time12Hours is valid : 1:00 PM , true
Time12Hours is valid : 12:50 pm , true
Time12Hours is valid : 0:00 am , false
Time12Hours is valid : 10:00 am , false
Time12Hours is valid : 1:00 , false
Time12Hours is valid : 23:00 am , false
Time12Hours is valid : 1:61 pm , false
Time12Hours is valid : 13:00 pm , false
Time12Hours is valid : 001:50 pm , false
Time12Hours is valid : 10:99 am , false
Time12Hours is valid : 01:00 pm , false
Time12Hours is valid : 1:00 bm , false
Tests run: 17, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.553 sec
Results :
Tests run: 17, Failures: 0, Errors: 0, Skipped: 0
Note: file pom.xml add maven
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>6.8</version>
<scope>test</scope>
</dependency>