HamCrest: isEmptyOrNullString: Match if the string is empty or null

By using isEmptyOrNullString, you can create a matcher that matches when the examined string is null, or has zero length.

Ex

String str1 = "";

String str2 = null;

                 

assertThat("str1 should be empty", str1, isEmptyOrNullString());

assertThat("str2 should be null", str2, isEmptyOrNullString());

Find the below working application.

TestApp.java

package com.sample.tests;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.isEmptyOrNullString;

import org.junit.Test;

public class TestApp {

 @Test
 public void testmethod() {
  String str1 = "";
  String str2 = null;
  
  assertThat("str1 should be empty", str1, isEmptyOrNullString());
  assertThat("str2 should be null", str2, isEmptyOrNullString());
 }
}

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