Fix Spring IO Tests

web/src/main/java/org/springframework/security/web/context/SaveContextOnUpdateOrErrorResponseWrapper.java

@@ -17,6 +17,7 @@ import java.io.PrintWriter;
 import java.util.Locale;
 
 import javax.servlet.ServletOutputStream;
+import javax.servlet.WriteListener;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpServletResponseWrapper;
 
@@ -469,5 +470,15 @@ public abstract class SaveContextOnUpdateOrErrorResponseWrapper extends
 		public String toString() {
 			return getClass().getName() + "[delegate=" + delegate.toString() + "]";
 		}
+
+		@Override
+		public boolean isReady() {
+			return delegate.isReady();
+		}
+
+		@Override
+		public void setWriteListener(WriteListener writeListener) {
+			delegate.setWriteListener(writeListener);
+		}
 	}
 }

web/src/test/java/org/springframework/security/web/authentication/session/ChangeSessionIdAuthenticationStrategyTests.java

@@ -42,6 +42,12 @@ public class ChangeSessionIdAuthenticationStrategyTests {
 
 	@Test(expected = IllegalStateException.class)
 	public void constructChangeIdMethodNotFound() {
+		spy(ReflectionUtils.class);
+		MockHttpServletRequest request = new MockHttpServletRequest();
+		request.getSession();
+		when(ReflectionUtils.findMethod(HttpServletRequest.class, "changeSessionId"))
+				.thenReturn(null);
+
 		new ChangeSessionIdAuthenticationStrategy();
 	}