Add test files for Authentication handler and clean test file for batch request content

Author: deepak2016

src/test/java/com/microsoft/graph/content/MSBatchRequestContentTest.java

@@ -15,22 +15,6 @@
 
 public class MSBatchRequestContentTest {
 
-	@BeforeClass
-	public static void setUpBeforeClass() throws Exception {
-	}
-
-	@AfterClass
-	public static void tearDownAfterClass() throws Exception {
-	}
-
-	@Before
-	public void setUp() throws Exception {
-	}
-
-	@After
-	public void tearDown() throws Exception {
-	}
-
 	@Test
 	public void testMSBatchRequestContentCreation() {
 

src/test/java/com/microsoft/graph/httpcore/AuthenticationHandlerTest.java

@@ -0,0 +1,47 @@
+package com.microsoft.graph.httpcore;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import java.io.IOException;
+
+import org.apache.http.Header;
+import org.apache.http.HttpException;
+import org.apache.http.HttpRequest;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.protocol.HttpClientContext;
+import org.junit.Test;
+
+public class AuthenticationHandlerTest {
+	
+	static String token = "TEST-TOKEN";
+	
+	public static class AuthProvider implements IAuthenticationProvider{
+		public static String getToken() {
+			return "Bearer " + token;
+		}
+		public void authenticateRequest(HttpRequest request) {
+			// TODO Auto-generated method stub
+			request.addHeader("Authorization", AuthProvider.getToken());
+		}
+	}
+
+	@Test
+	public void testAuthenticationHandler() {
+		AuthProvider authProvider = new AuthProvider();
+		AuthenticationHandler authHandler = new AuthenticationHandler(authProvider);
+		HttpGet httpget = new HttpGet("https://graph.microsoft.com/v1.0/me/");
+		HttpClientContext localContext = HttpClientContext.create();
+		
+		try {
+			authHandler.process(httpget, localContext);
+			Header header = httpget.getFirstHeader("Authorization");
+			assertTrue(header.getValue().equals("Bearer " + token));
+		} catch (HttpException | IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+			fail("Authentication handler failure");
+		}
+	}
+
+}