diff --git a/include/IJavaScriptContext.h b/include/IJavaScriptContext.h
index 7c5ca76..bf82623 100644
--- a/include/IJavaScriptContext.h
+++ b/include/IJavaScriptContext.h
@@ -25,6 +25,7 @@
 class IJavaScriptContext
 {
   public:
+    virtual ~IJavaScriptContext() = default;
     virtual bool runScript(const char *script, bool isModule=true, std::string name="", const char *args = nullptr, bool isApplication=false) = 0;
     virtual bool runFile(const char *file, const char* args, bool isApplication=false) = 0;
     virtual std::string getUrl()  = 0;
diff --git a/src/JSRuntimeServer.cpp b/src/JSRuntimeServer.cpp
index 342f386..3a0793c 100644
--- a/src/JSRuntimeServer.cpp
+++ b/src/JSRuntimeServer.cpp
@@ -80,7 +80,7 @@ class JsonWrap
 
     uint32_t getUint32(const char *name, bool &err)
     {
-        uint32_t res;
+        uint32_t res = 0;
         cJSON *itm = cJSON_GetObjectItem(mPtr, name);
         if (!itm || !cJSON_IsNumber(itm))
         {
diff --git a/src/NativeJSRenderer.cpp b/src/NativeJSRenderer.cpp
index bee81b9..4080373 100644
--- a/src/NativeJSRenderer.cpp
+++ b/src/NativeJSRenderer.cpp
@@ -506,8 +506,9 @@ void NativeJSRenderer::run()
         if(!mTestFileName.empty())
         {
             ModuleSettings settings;
+            uint32_t id = createApplicationIdentifier();
 	    settings.enableJSDOM = mEnableTestFileDOMSupport;
-	    ApplicationRequest appRequest(id, RUN, mTestFileName, settings.enableHttp, settings.enableXHR, settings.enableWebSocket, settings.enableWebSocketEnhanced, settings.enableFetch, settings.enableJSDOM, settings.enableWindow, settings.enablePlayer);
+        ApplicationRequest appRequest(id, RUN, mTestFileName, settings.enableHttp, settings.enableXHR, settings.enableWebSocket, settings.enableWebSocketEnhanced, settings.enableFetch, settings.enableJSDOM, settings.enableWindow, settings.enablePlayer);
 	    NativeJSRenderer::createApplicationInternal(appRequest);
 	    NativeJSRenderer::runApplicationInternal(appRequest);
 	    mTestFileName = "";
diff --git a/src/jsc/JavaScriptContext.cpp b/src/jsc/JavaScriptContext.cpp
index a0af753..09ee2f4 100644
--- a/src/jsc/JavaScriptContext.cpp
+++ b/src/jsc/JavaScriptContext.cpp
@@ -121,6 +121,10 @@ if (mModuleSettings.enablePlayer)
     mPriv->releaseAllProtected();
     JSGlobalContextRelease(mContext);
     JSContextGroupRelease(mContextGroup);
+    if (mNetworkMetricsData) {
+        delete mNetworkMetricsData;
+        mNetworkMetricsData = nullptr;
+    }
     rtLogInfo("%s end", __FUNCTION__);
 }
 
diff --git a/src/jsc/JavaScriptUtils.cpp b/src/jsc/JavaScriptUtils.cpp
index 5476746..4b9e015 100644
--- a/src/jsc/JavaScriptUtils.cpp
+++ b/src/jsc/JavaScriptUtils.cpp
@@ -332,6 +332,7 @@ rtError rtReadBinaryBinding(int numArgs, const rtValue* args, rtValue* result, v
   {
       result->setString(buffer);
   }
+  free(buffer);
   return RT_OK;
 }
 
@@ -693,6 +694,7 @@ rtError rtJSRuntimeDownloadMetrics(int numArgs, const rtValue* args, rtValue* re
   rtValue keys;
   if (map->Get("allKeys", &keys) != RT_OK) {
     rtLogWarn("Could not retrieve url for network metrics data.");
+    delete netMetricsArray;
     return RT_FAIL;
   }
   rtObjectRef objRef = keys.toObject();