add one testcase

Author: 317787106

framework/src/main/java/org/tron/common/logsfilter/EventPluginLoader.java

@@ -546,7 +546,7 @@ public boolean isBusy() {
     }
     int queueSize = 0;
     if (eventListeners == null || eventListeners.isEmpty()) {
-      //only occurs in mock test. TODO fix test
+      // only occurs in mock test. TODO fix test
       return false;
     }
     for (IPluginEventListener listener : eventListeners) {

framework/src/main/java/org/tron/core/net/peer/PeerStatusCheck.java

@@ -43,7 +43,7 @@ public void statusCheck() {
     long now = System.currentTimeMillis();
 
     if (tronNetDelegate == null) {
-      //only occurs in mock test. TODO fix test
+      // only occurs in mock test. TODO fix test
       return;
     }
     tronNetDelegate.getActivePeer().forEach(peer -> {

framework/src/main/java/org/tron/core/services/jsonrpc/TronJsonRpcImpl.java

@@ -240,10 +240,10 @@ public static void handleLogsFilter(LogsFilterCapsule logsFilterCapsule) {
       for (LogFilterElement element : elements) {
         LogFilterElement newElement;
         try {
-          //compare with hashcode() first, then with equals(). If not exist, put it.
+          // compare with hashcode() first, then with equals(). If not exist, put it.
           newElement = logElementCache.get(element, () -> element);
         } catch (ExecutionException e) {
-          logger.error("Getting/loading LogFilterElement from cache fails", e);//never happen
+          logger.error("Getting/loading LogFilterElement from cache fails", e);// never happen
           continue;
         }
         logFilterAndResult.getResult().add(newElement);

framework/src/test/java/org/tron/core/zksnark/ShieldedReceiveTest.java

@@ -228,6 +228,11 @@ private void updateTotalShieldedPoolValue(long valueBalance) {
     chainBaseManager.getDynamicPropertiesStore().saveTotalShieldedPoolValue(totalShieldedPoolValue);
   }
 
+  @Test
+  public void testIsMining() {
+    Assert.assertTrue(wallet.isMining());
+  }
+
   /*
    * test of change ShieldedTransactionFee proposal
    */