[polardbx][test] Rename PolardbxSourceTCase to PolardbxSourceITCase (#1447)

flink-connector-mysql-cdc/src/test/java/com/ververica/cdc/connectors/polardbx/PolardbxSourceITCase.java

@@ -69,8 +69,8 @@ import static org.junit.Assert.assertTrue;
  * we added fallback in {@link MySqlSchema} when parsing ddl failed and provided these cases to
  * test.
  */
-public class PolardbxSourceTCase extends AbstractTestBase {
-    private static final Logger LOG = LoggerFactory.getLogger(PolardbxSourceTCase.class);
+public class PolardbxSourceITCase extends AbstractTestBase {
+    private static final Logger LOG = LoggerFactory.getLogger(PolardbxSourceITCase.class);
     private static final Pattern COMMENT_PATTERN = Pattern.compile("^(.*)--.*$");
     private static final Integer PORT = 8527;
     private static final String HOST_NAME = "127.0.0.1";
@@ -131,7 +131,7 @@ public class PolardbxSourceTCase extends AbstractTestBase {
     protected static void initializePolardbxTables(String databaseName)
             throws InterruptedException {
         final String ddlFile = String.format("ddl/%s.sql", databaseName);
-        final URL ddlTestFile = PolardbxSourceTCase.class.getClassLoader().getResource(ddlFile);
+        final URL ddlTestFile = PolardbxSourceITCase.class.getClassLoader().getResource(ddlFile);
         assertNotNull("Cannot locate " + ddlFile, ddlTestFile);
         // need to sleep 1s, make sure the jdbc connection can be created
         Thread.sleep(1000);