Improve test coverage for batch operations

Author: trask

instrumentation/jdbc/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/jdbc/JdbcAdviceScope.java

@@ -7,6 +7,7 @@
 
 import static io.opentelemetry.javaagent.bootstrap.Java8BytecodeBridge.currentContext;
 import static io.opentelemetry.javaagent.instrumentation.jdbc.JdbcSingletons.statementInstrumenter;
+import static java.util.Collections.emptyList;
 
 import io.opentelemetry.context.Context;
 import io.opentelemetry.context.Scope;
@@ -83,11 +84,11 @@ private static DbRequest createBatchRequest(Statement statement) {
       }
       Long batchSize = JdbcData.getPreparedStatementBatchSize((PreparedStatement) statement);
       Map<String, String> parameters = JdbcData.getParameters((PreparedStatement) statement);
-      return DbRequest.create(statement, sql, batchSize, parameters, true);
+      return DbRequest.create(statement, sql, batchSize != null ? batchSize : 0L, parameters, true);
     } else {
       JdbcData.StatementBatchInfo batchInfo = JdbcData.getStatementBatchInfo(statement);
       if (batchInfo == null) {
-        return DbRequest.create(statement, null);
+        return DbRequest.create(statement, emptyList(), 0L, false);
       } else {
         return DbRequest.create(
             statement, batchInfo.getQueryTexts(), batchInfo.getBatchSize(), false);