how to use assertion in testng ? – Assert (TestNG)

Refer Assert (TestNG) 

 

 

Sample Method Detail

assertTrue
assertFalse
assertEquals

 

Example 1 : what happen when assertion fail using  assertEquals ?

 

package testWordpress;

import org.testng.Assert;
import org.testng.annotations.Test;

public class AssertionsTest {

 @Test
 public void testMultiply() {

 Assert.assertEquals(50, multiply(10, 5));
 }


 public int multiply(int x, int y) {
 return x / y;
 }

}

 

Run above code using testNG and check TestNG result pane

assertEquals

assertEquals

 

 

Example 2 : what happen when assertion success using  assertEquals ?

 

package testWordpress;

import org.testng.Assert;
import org.testng.annotations.Test;

public class AssertionsTest {

 @Test
 public void testMultiply() {

 Assert.assertEquals(2, multiply(10, 5));
 }


 public int multiply(int x, int y) {
 return x / y;
 }
}

Condition when success

Condition when success

Example 3: what happen when assertion success using  assertTrue?

package testWordpress;

import org.testng.Assert;
import org.testng.annotations.Test;

public class AssertionsTest {

package testWordpress;

import org.testng.Assert;
import org.testng.annotations.Test;

public class AssertionsTest {

 @Test
 public void testMultiply() {

 Assert.assertTrue(multiply(10, 5)!=20, "Sorry");
 }


 public int multiply(int x, int y) {
 return x / y;
 }

}

 

what happen when assertion success using  assertTrue

what happen when assertion success using assertTrue

 

 

Example 4: what happen when assertion fail using  assertTrue?

package testWordpress;

import org.testng.Assert;
import org.testng.annotations.Test;

public class AssertionsTest {

 @Test
 public void testMultiply() {

 Assert.assertTrue(multiply(10, 5)!=2, "Sorry");
 }


 public int multiply(int x, int y) {
 return x / y;
 }

}
what happen when assertion fail using  assertTrue

what happen when assertion fail using assertTrue

 

Example 4: what happen when assertion success using  assertFalse?

 

package testWordpress;

import org.testng.Assert;
import org.testng.annotations.Test;

public class AssertionsTest {

 @Test
 public void testMultiply() {

 Assert.assertFalse(multiply(10, 5)>10, "Caught");
 }


 public int multiply(int x, int y) {
 return x / y;
 }
}

what happen when assertion success using  assertFalse

what happen when assertion success using assertFalse

 

Lets add TestCase with assertion in testng.xml and verify testNG html report

 

<test name="test4">
 <classes>
 <class name="testWordpress.AssertionsTest" ></class>
 </classes>
</test>

 

 

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