regex completed

src/main/java/HamletParser.java

+import jdk.nashorn.internal.runtime.regexp.joni.Regex;
+
 import java.io.File;
 import java.io.IOException;
 import java.util.Scanner;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Created by thook on 10/7/15.
         File file = new File(classLoader.getResource("hamlet.txt").getFile());
         StringBuilder result = new StringBuilder("");
 
-        try(Scanner scanner = new Scanner(file)){
+        try {
+            Scanner scanner = new Scanner(file);
             while(scanner.hasNextLine()){
                 String line = scanner.nextLine();
                 result.append(line).append("\n");
         return hamletData;
     }
 
+    public Pattern createRegexPattern(String regex) {
+        return Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
+    }
+
+    public Matcher createMatcherFromInput(Pattern pattern, String input) {
+        return pattern.matcher(input);
+    }
+
+    public String findReplace(Matcher matcher, String replace) {
+        return matcher.replaceAll(replace);
+    }
 }

src/test/java/HamletParserTest.java

 import org.junit.Before;
 import org.junit.Test;
 
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 import static org.junit.Assert.*;
 
 public class HamletParserTest {
     }
 
     @Test
-    public void testChangeHamletToLeon() {
+    public void testChangeHamletToDolio() {
+        String input = "HamletHoratioHamletHoratio";
+        String find = "Hamlet";
+        String replace = "Dolio";
+        Pattern pattern = hamletParser.createRegexPattern(find);
+        Matcher matcher = hamletParser.createMatcherFromInput(pattern, input);
+        String actual = hamletParser.findReplace(matcher, replace);
+        String expected = "DolioHoratioDolioHoratio";
+        assertEquals(expected, actual);
     }
 
     @Test
-    public void testChangeHoratioToTariq() {
+    public void testChangeHoratioToFroilan() {
+        String input = "HamletHoratioHamletHoratio";
+        String find = "Horatio";
+        String replace = "Froilan";
+        Pattern pattern = hamletParser.createRegexPattern(find);
+        Matcher matcher = hamletParser.createMatcherFromInput(pattern, input);
+        String actual = hamletParser.findReplace(matcher, replace);
+        String expected = "HamletFroilanHamletFroilan";
+        assertEquals(expected, actual);
     }
 
     @Test
-    public void testFindHoratio() {
+    public void testCreateHoratioPattern() {
+        String expected = "Horatio";
+        Pattern pattern = hamletParser.createRegexPattern(expected);
+        String actual = pattern.toString();
+        assertEquals(expected, actual);
     }
 
     @Test
-    public void testFindHamlet() {
+    public void testCreateHamletPattern() {
+        String expected = "Hamlet";
+        Pattern pattern = hamletParser.createRegexPattern(expected);
+        String actual = pattern.toString();
+        assertEquals(expected, actual);
     }
+
+    @Test
+    public void testCreateMatcherFromInput(){
+        String input = "HamletHoratioHamletHoratio";
+        Pattern pattern = hamletParser.createRegexPattern("Hamlet");
+        Matcher matcher = hamletParser.createMatcherFromInput(pattern, input);
+        boolean actual = matcher instanceof Matcher;
+        assertTrue(actual);
+    }
+
 }