### Question:
SchemaProcessor extends AbstractProcessor { @Override public void process() { schemaHolder.refreshSchemas(); } SchemaProcessor(CassandraConnectorContext context); @Override void process();  }### Answer:
@Test public void testProcess() throws Exception { CassandraConnectorContext context = generateTaskContext(); SchemaProcessor schemaProcessor = new SchemaProcessor(context); SchemaHolder.KeyValueSchema keyValueSchema; String namespacePrefix = "io.debezium.connector.cassandra" + "." + EmbeddedCassandraConnectorTestBase.TEST_KAFKA_TOPIC_PREFIX + "." + EmbeddedCassandraConnectorTestBase.TEST_KEYSPACE; String expectedKeySchemaName; String expectedValueSchemaName; assertEquals(0, context.getSchemaHolder().getCdcEnabledTableMetadataSet().size()); context.getCassandraClient().execute("CREATE TABLE IF NOT EXISTS " + keyspaceTable("table1") + " (a int, b text, PRIMARY KEY(a)) WITH cdc = false;"); schemaProcessor.process(); assertEquals(0, context.getSchemaHolder().getCdcEnabledTableMetadataSet().size()); assertNull(context.getSchemaHolder().getOrUpdateKeyValueSchema(new KeyspaceTable(TEST_KEYSPACE, "table1"))); context.getCassandraClient().execute("ALTER TABLE " + keyspaceTable("table1") + " WITH cdc = true;"); schemaProcessor.process(); assertEquals(1, context.getSchemaHolder().getCdcEnabledTableMetadataSet().size()); keyValueSchema = context.getSchemaHolder().getOrUpdateKeyValueSchema(new KeyspaceTable(TEST_KEYSPACE, "table1")); assertNotNull(keyValueSchema); expectedKeySchemaName = namespacePrefix + "." + "table1" + "." + "Key"; assertEquals(expectedKeySchemaName, keyValueSchema.keySchema().name()); expectedValueSchemaName = namespacePrefix + "." + "table1" + "." + "Value"; assertEquals(expectedValueSchemaName, keyValueSchema.valueSchema().name()); context.getCassandraClient().execute("CREATE TABLE IF NOT EXISTS " + keyspaceTable("table2") + " (a int, b text, PRIMARY KEY(a)) WITH cdc = true;"); schemaProcessor.process(); assertEquals(2, context.getSchemaHolder().getCdcEnabledTableMetadataSet().size()); keyValueSchema = context.getSchemaHolder().getOrUpdateKeyValueSchema(new KeyspaceTable(TEST_KEYSPACE, "table1")); assertNotNull(keyValueSchema); expectedKeySchemaName = namespacePrefix + "." + "table1" + "." + "Key"; assertEquals(expectedKeySchemaName, keyValueSchema.keySchema().name()); expectedValueSchemaName = namespacePrefix + "." + "table1" + "." + "Value"; assertEquals(expectedValueSchemaName, keyValueSchema.valueSchema().name()); keyValueSchema = context.getSchemaHolder().getOrUpdateKeyValueSchema(new KeyspaceTable(TEST_KEYSPACE, "table2")); assertNotNull(keyValueSchema); expectedKeySchemaName = namespacePrefix + "." + "table2" + "." + "Key"; assertEquals(expectedKeySchemaName, keyValueSchema.keySchema().name()); expectedValueSchemaName = namespacePrefix + "." + "table2" + "." + "Value"; assertEquals(expectedValueSchemaName, keyValueSchema.valueSchema().name()); context.getCassandraClient().execute("ALTER TABLE " + keyspaceTable("table2") + " ADD c text"); schemaProcessor.process(); assertEquals(2, context.getSchemaHolder().getCdcEnabledTableMetadataSet().size()); TableMetadata expectedTm1 = context.getCassandraClient().getCdcEnabledTableMetadata(TEST_KEYSPACE, "table1"); TableMetadata expectedTm2 = context.getCassandraClient().getCdcEnabledTableMetadata(TEST_KEYSPACE, "table2"); TableMetadata tm1 = context.getSchemaHolder().getOrUpdateKeyValueSchema(new KeyspaceTable(TEST_KEYSPACE, "table1")).tableMetadata(); TableMetadata tm2 = context.getSchemaHolder().getOrUpdateKeyValueSchema(new KeyspaceTable(TEST_KEYSPACE, "table2")).tableMetadata(); assertEquals(expectedTm1, tm1); assertEquals(expectedTm2, tm2); deleteTestKeyspaceTables(); context.cleanUp(); }