1) Fix stray imports from libraries that aren't depended on and fix annotations/methods accordingly.

examples/src/test/java/druid/examples/web/InputSupplierUpdateStreamTest.java

@@ -21,8 +21,8 @@ package druid.examples.web;
 
 import com.google.common.io.InputSupplier;
 import junit.framework.Assert;
-import org.testng.annotations.BeforeClass;
-import org.testng.annotations.Test;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -38,7 +38,7 @@ public class InputSupplierUpdateStreamTest
   Map<String, Object> expectedAnswer = new HashMap<String, Object>();
   String timeDimension;
 
-  @BeforeClass
+  @Before
   public void setUp()
   {
     timeDimension = "time";

examples/src/test/java/druid/examples/web/RenamingKeysUpdateStreamTest.java

@@ -21,8 +21,8 @@ package druid.examples.web;
 
 import com.google.common.io.InputSupplier;
 import junit.framework.Assert;
-import org.testng.annotations.BeforeClass;
-import org.testng.annotations.Test;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -35,7 +35,7 @@ public class RenamingKeysUpdateStreamTest
   private InputSupplier testCaseSupplier;
   String timeDimension;
 
-  @BeforeClass
+  @Before
   public void setUp()
   {
     timeDimension = "time";

examples/src/test/java/druid/examples/web/WebFirehoseFactoryTest.java

@@ -24,6 +24,9 @@ import com.google.common.collect.Lists;
 import com.metamx.druid.input.InputRow;
 import com.metamx.druid.realtime.firehose.Firehose;
 import org.joda.time.DateTime;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.util.Collections;
 import java.util.List;
@@ -36,7 +39,7 @@ public class WebFirehoseFactoryTest
   private WebFirehoseFactory webbie;
   private WebFirehoseFactory webbie1;
 
-  @BeforeClass
+  @Before
   public void setUp() throws Exception
   {
     dimensions.add("item1");
@@ -185,7 +188,7 @@ public class WebFirehoseFactoryTest
       throw new RuntimeException("queue is empty");
     }
 
-    Assert.assertEquals((float) 2.0, inputRow.getFloatMetric("item2"));
+    Assert.assertEquals((float) 2.0, inputRow.getFloatMetric("item2"), 0.0f);
   }
 
   private static class MyUpdateStream implements UpdateStream

examples/src/test/java/druid/examples/web/WebJsonSupplierTest.java

@@ -19,13 +19,13 @@
 
 package druid.examples.web;
 
-import org.testng.annotations.Test;
+import org.junit.Test;
 
 import java.net.UnknownHostException;
 
 public class WebJsonSupplierTest
 {
-  @Test(expectedExceptions = UnknownHostException.class)
+  @Test(expected = UnknownHostException.class)
   public void checkInvalidUrl() throws Exception
   {