Bael 1611 (#3799)

* Externalizable test * Guide to Externalizable interface +tests * serialize Community
2018-03-15 13:08:37 +04:00
parent 510ad19f90
commit 24acf35bce
4 changed files with 213 additions and 0 deletions
@@ -0,0 +1,71 @@
+package com.baeldung.externalizable;
+
+import org.junit.Test;
+
+import java.io.*;
+
+import static org.junit.Assert.assertTrue;
+
+public class ExternalizableUnitTest {
+
+    private final static String OUTPUT_FILE = "externalizable.txt";
+
+    @Test
+    public void whenSerializing_thenUseExternalizable() throws IOException, ClassNotFoundException {
+
+        Country c = new Country();
+        c.setCapital("Yerevan");
+        c.setCode(374);
+        c.setName("Armenia");
+
+        FileOutputStream fileOutputStream = new FileOutputStream(OUTPUT_FILE);
+        ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream);
+        c.writeExternal(objectOutputStream);
+
+        objectOutputStream.flush();
+        objectOutputStream.close();
+        fileOutputStream.close();
+
+        FileInputStream fileInputStream = new FileInputStream(OUTPUT_FILE);
+        ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
+
+        Country c2 = new Country();
+        c2.readExternal(objectInputStream);
+
+        objectInputStream.close();
+        fileInputStream.close();
+
+        assertTrue(c2.getCode() == c.getCode());
+        assertTrue(c2.getName().equals(c.getName()));
+    }
+
+    @Test
+    public void whenInheritanceSerialization_then_UseExternalizable() throws IOException, ClassNotFoundException {
+
+        Region r = new Region();
+        r.setCapital("Yerevan");
+        r.setCode(374);
+        r.setName("Armenia");
+        r.setClimate("Mediterranean");
+        r.setPopulation(120.000);
+
+        FileOutputStream fileOutputStream = new FileOutputStream(OUTPUT_FILE);
+        ObjectOutputStream objectOutputStream = new ObjectOutputStream(fileOutputStream);
+        r.writeExternal(objectOutputStream);
+
+        objectOutputStream.flush();
+        objectOutputStream.close();
+        fileOutputStream.close();
+
+        FileInputStream fileInputStream = new FileInputStream(OUTPUT_FILE);
+        ObjectInputStream objectInputStream = new ObjectInputStream(fileInputStream);
+
+        Region r2 = new Region();
+        r2.readExternal(objectInputStream);
+
+        objectInputStream.close();
+        fileInputStream.close();
+
+        assertTrue(r2.getPopulation() == null);
+    }
+}