Add test cases on BroadcastRule

features/broadcast/core/src/test/java/org/apache/shardingsphere/broadcast/rule/BroadcastRuleTest.java

@@ -56,12 +56,12 @@ private static Map<String, DataSource> mockDataSourceMap() {
     }
 
     private ShardingSphereRule mockBuiltRule() {
-        ShardingSphereRule result = mock(ShardingSphereRule.class);
         DataSourceMapperRuleAttribute ruleAttribute = mock(DataSourceMapperRuleAttribute.class);
         Map<String, Collection<String>> dataSourceMapper = new HashMap<>(2, 1F);
         dataSourceMapper.put("foo_ds", Arrays.asList("foo_ds_0", "foo_ds_1"));
         dataSourceMapper.put("bar_ds", Arrays.asList("bar_ds_0", "bar_ds_1"));
         when(ruleAttribute.getDataSourceMapper()).thenReturn(dataSourceMapper);
+        ShardingSphereRule result = mock(ShardingSphereRule.class);
         when(result.getAttributes()).thenReturn(new RuleAttributes(ruleAttribute));
         return result;
     }