Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

testing-modules/junit-5-advanced/src/main/java/com/baeldung/failure_vs_error/SimpleCalculator.java

@@ -0,0 +1,15 @@
+package com.baeldung.failure_vs_error;
+
+/**
+ * @author paullatzelsperger
+ * @since 2019-07-17
+ */
+public class SimpleCalculator {
+
+    public static double divideNumbers(double dividend, double divisor) {
+        if (divisor == 0) {
+            throw new ArithmeticException("Division by zero!");
+        }
+        return dividend / divisor;
+    }
+}

testing-modules/junit-5-advanced/src/main/java/com/baeldung/junit5/testinstance/Tweet.java

@@ -0,0 +1,27 @@
+package com.baeldung.junit5.testinstance;
+
+import java.io.Serializable;
+
+public class Tweet implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+    private String id;
+    private String content;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+    public void setContent(String content) {
+        this.content = content;
+    }
+
+}

testing-modules/junit-5-advanced/src/main/java/com/baeldung/junit5/testinstance/TweetException.java

@@ -0,0 +1,10 @@
+package com.baeldung.junit5.testinstance;
+
+public class TweetException extends RuntimeException {
+
+    private static final long serialVersionUID = 1L;
+
+    public TweetException(String message) {
+        super(message);
+    }
+}

testing-modules/junit-5-advanced/src/main/java/com/baeldung/junit5/testinstance/TweetSerializer.java

@@ -0,0 +1,41 @@
+package com.baeldung.junit5.testinstance;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectOutputStream;
+
+public class TweetSerializer {
+
+    private static final int MAX_TWEET_SIZE = 1000;
+    private static final int MIN_TWEET_SIZE = 150;
+    private final Tweet tweet;
+
+    public TweetSerializer(Tweet tweet) {
+        this.tweet = tweet;
+    }
+
+    public byte[] serialize() throws IOException {
+        byte[] tweetContent = serializeTweet();
+        int totalLength = tweetContent.length;
+        validateSizeOfTweet(totalLength);
+        return tweetContent;
+    }
+
+    private void validateSizeOfTweet(int tweetSize) {
+        if (tweetSize > MAX_TWEET_SIZE) {
+            throw new TweetException("Tweet is too large");
+        }
+        if (tweetSize < MIN_TWEET_SIZE) {
+            throw new TweetException("Tweet is too small");
+        }
+    }
+
+    private byte[] serializeTweet() throws IOException {
+        try (ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream(); 
+                ObjectOutputStream objectStream = new ObjectOutputStream(arrayOutputStream)) {
+            objectStream.writeObject(tweet);
+            return arrayOutputStream.toByteArray();
+        }
+    }
+
+}