Safe copier tested

src/main/java/io/zipcoder/MonkeyTypewriter.java

@@ -1,6 +1,7 @@
 package io.zipcoder;
 
 public class MonkeyTypewriter {
+
     public static void main(String[] args) {
         String introduction = "It was the best of times,\n" +
                 "it was the blurst of times,\n" +
@@ -74,7 +75,16 @@ public class MonkeyTypewriter {
         }
 
         // Print out the copied versions here.
-        System.out.println(unsafeCopier.copied);
-        System.out.println(safeCopier.copied);
+        unsafeOutput(unsafeCopier.copied);
+        safeOutput(safeCopier.copied);
+    }
+
+    // Made these for testing and didn't need them lol
+    public static void unsafeOutput(String output) {
+        System.out.println(output);
+    }
+
+    public static void safeOutput(String output) {
+        System.out.println(output);
     }
 }

src/main/test/SafeCopierTest.java

@@ -0,0 +1,57 @@
+import io.zipcoder.Copier;
+import io.zipcoder.SafeCopier;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+
+public class SafeCopierTest {
+
+    @Test
+    public void outputTest() {
+        Copier safeCopier = new SafeCopier("It was the best of times,\n" +
+                "it was the blurst of times,\n" +
+                "it was the age of wisdom,\n" +
+                "it was the age of foolishness,\n" +
+                "it was the epoch of belief,\n" +
+                "it was the epoch of incredulity,\n" +
+                "it was the season of Light,\n" +
+                "it was the season of Darkness,\n" +
+                "it was the spring of hope,\n" +
+                "it was the winter of despair,\n" +
+                "we had everything before us,\n" +
+                "we had nothing before us,\n" +
+                "we were all going direct to Heaven,\n" +
+                "we were all going direct the other way--\n" +
+                "in short, the period was so far like the present period, that some of\n" +
+                "its noisiest authorities insisted on its being received, for good or for\n" +
+                "evil, in the superlative degree of comparison only.");
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outputStream));
+        while (safeCopier.stringIterator.hasNext()) {
+            for (int i = 0; i < 5; i++) {
+                Thread monkey = new Thread(safeCopier);
+                monkey.start();
+            }
+        }
+        Assert.assertEquals(safeCopier.copied, "It was the best of times,\n" +
+                "it was the blurst of times,\n" +
+                "it was the age of wisdom,\n" +
+                "it was the age of foolishness,\n" +
+                "it was the epoch of belief,\n" +
+                "it was the epoch of incredulity,\n" +
+                "it was the season of Light,\n" +
+                "it was the season of Darkness,\n" +
+                "it was the spring of hope,\n" +
+                "it was the winter of despair,\n" +
+                "we had everything before us,\n" +
+                "we had nothing before us,\n" +
+                "we were all going direct to Heaven,\n" +
+                "we were all going direct the other way--\n" +
+                "in short, the period was so far like the present period, that some of\n" +
+                "its noisiest authorities insisted on its being received, for good or for\n" +
+                "evil, in the superlative degree of comparison only.");
+    }
+
+}