Make Cookie serializable

Signed-off-by: Andreas Tolfsen <ato@mozilla.com>

java/client/src/org/openqa/selenium/Cookie.java

@@ -16,10 +16,13 @@
 
 package org.openqa.selenium;
 
+import java.io.Serializable;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 
-public class Cookie {
+public class Cookie implements Serializable {
+  private static final long serialVersionUID = 4115876353625612383L;
+
   private final String name;
   private final String value;
   private final String path;

java/client/test/org/openqa/selenium/CookieTest.java

@@ -16,14 +16,21 @@
 
 package org.openqa.selenium;
 
-import org.junit.Test;
-
-import java.util.Date;
-
+import static org.hamcrest.Matchers.equalTo;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
+import org.junit.Test;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.Date;
+
 public class CookieTest {
 
   @Test
@@ -76,4 +83,19 @@ public void testHttpOnlyDefaultsToFalse() {
     Cookie cookie = new Cookie("name", "value");
     assertFalse(cookie.isHttpOnly());
   }
+
+  @Test
+  public void testCookieSerializes() throws IOException, ClassNotFoundException {
+    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
+    ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
+    Cookie cookieToSerialize = new Cookie("Fish", "cod", "", "", null, false);
+
+    objectOutputStream.writeObject(cookieToSerialize);
+    byte[] serializedCookie = byteArrayOutputStream.toByteArray();
+
+    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(serializedCookie);
+    ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
+    Cookie deserializedCookie = (Cookie) objectInputStream.readObject();
+    assertThat(cookieToSerialize, equalTo(deserializedCookie));
+  }
 }