Apply @ParametersAreNonnullByDefault to test listeners

Author: mcculls

components/context/src/test/java/datadog/context/ContextContinuationTest.java

@@ -15,8 +15,10 @@
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
+import javax.annotation.ParametersAreNonnullByDefault;
 import org.junit.jupiter.api.Test;
 
+@ParametersAreNonnullByDefault
 class ContextContinuationTest extends ContextTestBase {
   private static final ContextKey<String> CONTINUATION_KEY = ContextKey.named("continuation-key");
 

components/context/src/test/java/datadog/context/ContextListenerExceptionTest.java

@@ -7,8 +7,10 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 
+import javax.annotation.ParametersAreNonnullByDefault;
 import org.junit.jupiter.api.Test;
 
+@ParametersAreNonnullByDefault
 class ContextListenerExceptionTest extends ContextTestBase {
   @Test
   void testListenerExceptionSwallowed() {

components/context/src/test/java/datadog/context/ContextTestBase.java

@@ -5,9 +5,11 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.util.List;
+import javax.annotation.ParametersAreNonnullByDefault;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 
+@ParametersAreNonnullByDefault
 abstract class ContextTestBase {
   @BeforeEach
   void verifyNoContextBefore() {