Working with TestNG - Starters Guide

Points to be considered while preparing a test in TestNG:

• Add TestNG annotations in code and put the business logic of test.
• Add the information about test like the class name, the groups etc.in a TestNG.xml file.
• Run TestNG.

Let us see the example:

Create StudentDetails.java

public class StudentDetails {

	private String student_Name;
	private int marks_Scored;

	//to return the name

	public String getName() {
		return student_Name;
	}
	// parameter student_Name the student_Name to set

	public void setName(String student_Name) {
		this.student_Name = student_Name;
	}
	//return the marks_Scored

	public int getMarks() {
		return marks_ Scored;
	}
	// parameter marks_Scored the marks_Scored to set

	public void setMarks(intmarks_Scored) {
		this.marks_Scored = marks_Scored;
	}
}

StudentDetails class is used to.

• Set/Get value of student name.
• Set/Get value of studentmarks_Scored.

Create a StudentGradeLogic.java which contains business logic which is used to assign the grade based on marks scored.

public class StudentGradeLogic {

	// Return grade based on marks scored
	public StringcalculateGrade(StudentDetails studentDetails) {
		String grade;
		marks = studentDetails.getMarks();
		if (studentDetails.getMarks() > 96) {
			grade = ‘A’;
		} else {
			grade = ’B’;
		}
		return grade;
	}
}

Create a TestNG class TestDetails.java. A TestNG class is a Java class that contains at least one TestNG annotation

import org.TestNG;
import org.TestNG.annotations.Test;

public class DetailsTest {

	StudentDetails sd = new StudentDetails();
	StudentGradeLogic sgl = new StudentGradeLogic();

	@Test
	public void testStudentGrade() {

		sd.setName("Nemo");
		sd.setMarks(80);

		String grade = sgl.calculateGrade(sd);
		Assert.assertEquals(“B”, grade);
	}
}

Execute the TestNG class and go to test-output that is automatically created in current directory.

Open it and load index.html, will see a similar page as shown below: