Updated per review.

- Created separate class for GHIssueEvent instead of nested classes.
- Renamed test class accordingly.

Other fixes:

- Changed id type to long.
- Updated test cases.
- Added toString() method.

src/test/java/org/kohsuke/github/GHIssueEventTest.java

@@ -0,0 +1,50 @@
+package org.kohsuke.github;
+
+import java.io.IOException;
+import org.junit.Test;
+
+/**
+ * @author Martin van Zijl
+ */
+public class GHIssueEventTest extends AbstractGitHubApiTestBase {
+
+    @Test
+    public void testEventsForSingleIssue() throws Exception {
+        GHRepository repo = getRepository();
+        GHIssue issue = repo.getIssue(1);
+
+        for (GHIssueEvent event : issue.listEvents()) {
+            System.out.println(event);
+        }
+
+        //TODO: Use the following...
+        //GHIssueBuilder builder = repo.createIssue("test from the api");
+        //GHIssue issue = builder.create();
+    }
+
+    @Test
+    public void testRepositoryEvents() throws Exception {
+        GHRepository repo = getRepository();
+        PagedIterable<GHIssueEvent> list = repo.listIssueEvents();
+
+        for (GHIssueEvent event : list) {
+            System.out.println(event);
+        }
+    }
+
+    @Test
+    public void testRepositorySingleEvent() throws Exception {
+        GHRepository repo = getRepository();
+        GHIssueEvent event = repo.getIssueEvent(2615868520L);
+
+        System.out.println(event);
+    }
+
+    protected GHRepository getRepository() throws IOException {
+        return getRepository(gitHub);
+    }
+
+    private GHRepository getRepository(GitHub gitHub) throws IOException {
+        return gitHub.getOrganization("github-api-test-org").getRepository("github-api");
+    }
+}