SNOW-1658905 Fix null pointer

src/test/java/com/snowflake/kafka/connector/streaming/iceberg/IcebergTableSchemaValidatorIT.java

@@ -3,18 +3,25 @@
 import com.snowflake.kafka.connector.internal.TestUtils;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 public class IcebergTableSchemaValidatorIT extends BaseIcebergIT {
 
  private static final String TEST_ROLE = "testrole_kafka";
 
- private static final IcebergTableSchemaValidator schemaValidator =
- new IcebergTableSchemaValidator(conn);
+ private static IcebergTableSchemaValidator schemaValidator;
 
  private String tableName;
 
+ @BeforeAll
+ // overrides the base class @BeforeAll
+ public static void setup() {
+ conn = TestUtils.getConnectionServiceForStreaming();
+ schemaValidator = new IcebergTableSchemaValidator(conn);
+ }
+
  @BeforeEach
  public void setUp() {
  tableName = TestUtils.randomTableName();