Fix test

Author: wy1433

infra/rewrite/core/src/main/java/org/apache/shardingsphere/infra/rewrite/engine/RouteSQLRewriteEngine.java

@@ -81,10 +81,11 @@ public RouteSQLRewriteResult rewrite(final SQLRewriteContext sqlRewriteContext,
 
     private int getMaxUnionSizePerDataSource(final QueryContext queryContext) {
         ConfigurationProperties props = queryContext.getMetaData().getProps();
-        if (null == props || null == props.getProps()) {
+        if (null == props) {
             return Integer.parseInt(ConfigurationPropertyKey.MAX_UNION_SIZE_PER_DATASOURCE.getDefaultValue());
         }
-        return props.<Integer>getValue(ConfigurationPropertyKey.MAX_UNION_SIZE_PER_DATASOURCE);
+        Integer result = props.getValue(ConfigurationPropertyKey.MAX_UNION_SIZE_PER_DATASOURCE);
+        return null == result ? Integer.parseInt(ConfigurationPropertyKey.MAX_UNION_SIZE_PER_DATASOURCE.getDefaultValue()) : result;
     }
 
     private Map<RouteUnit, SQLRewriteUnit> createSQLRewriteUnits(final SQLRewriteContext sqlRewriteContext, final RouteContext routeContext, final int maxUnionSizePerDataSource) {

proxy/frontend/dialect/opengauss/src/test/java/org/apache/shardingsphere/proxy/frontend/opengauss/command/query/extended/bind/OpenGaussComBatchBindExecutorTest.java

@@ -137,6 +137,7 @@ private ContextManager mockContextManager() {
         when(result.getMetaDataContexts().getMetaData().getProps().<Integer>getValue(ConfigurationPropertyKey.KERNEL_EXECUTOR_SIZE)).thenReturn(0);
         when(result.getMetaDataContexts().getMetaData().getProps().<Integer>getValue(ConfigurationPropertyKey.MAX_CONNECTIONS_SIZE_PER_QUERY)).thenReturn(1);
         when(result.getMetaDataContexts().getMetaData().getProps().<Boolean>getValue(ConfigurationPropertyKey.SQL_SHOW)).thenReturn(false);
+        when(result.getMetaDataContexts().getMetaData().getProps().<Integer>getValue(ConfigurationPropertyKey.MAX_UNION_SIZE_PER_DATASOURCE)).thenReturn(Integer.MAX_VALUE);
         when(result.getMetaDataContexts().getMetaData().getGlobalRuleMetaData()).thenReturn(new RuleMetaData(Collections.singleton(
                 new SQLTranslatorRule(new DefaultSQLTranslatorRuleConfigurationBuilder().build()))));
         ShardingSphereDatabase database = mockDatabase();