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 whenReplaceCharAtIndexUsingCharArray_thenSuccess() {
        assertEquals("abcme", characterInString.replaceCharUsingCharArray("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));
    }
}