java-tutorials/java-strings/src/test/java/com/baeldung/string/ReplaceCharInStringUnitTest.java

package com.baeldung.string;

import org.junit.Test;
import static org.junit.Assert.*;

public class ReplaceCharInStringUnitTest {
    private ReplaceCharacterInString characterInString = new ReplaceCharacterInString();

    @Test
    public void whenReplaceCharAtIndexUsingSubstring_thenSuccess(){
        assertEquals("abcme",characterInString.replaceCharSubstring("abcde",'m',3));
    }

    @Test
    public void whenReplaceCharAtIndexUsingStringBuilder_thenSuccess(){
        assertEquals("abcme",characterInString.replaceCharStringBuilder("abcde",'m',3));
    }

    @Test
    public void whenReplaceCharAtIndexUsingStringBuffer_thenSuccess(){
        assertEquals("abcme",characterInString.replaceCharStringBuffer("abcde",'m',3));
    }
}