Migrate to JUnit5

tolerant-reader/src/test/java/com/iluwatar/tolerantreader/AppTest.java

@@ -22,9 +22,9 @@
  */
 package com.iluwatar.tolerantreader;
 
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 import java.io.File;
 import java.io.IOException;
@@ -42,8 +42,8 @@ public class AppTest {
     App.main(args);
   }
 
-  @Before
-  @After
+  @BeforeEach
+  @AfterEach
   public void cleanup() {
     File file1 = new File("fish1.out");
     file1.delete();

tolerant-reader/src/test/java/com/iluwatar/tolerantreader/RainbowFishSerializerTest.java

@@ -23,19 +23,21 @@
 package com.iluwatar.tolerantreader;
 
 import org.junit.Rule;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.migrationsupport.rules.EnableRuleMigrationSupport;
 import org.junit.rules.TemporaryFolder;
 
 import java.io.File;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotSame;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotSame;
 
 /**
  * Date: 12/30/15 - 18:39 PM
  *
  * @author Jeroen Meulemeester
  */
+@EnableRuleMigrationSupport
 public class RainbowFishSerializerTest {
 
   /**