fix coverage

Author: vol0n

clion-plugin/src/main/kotlin/org/utbot/cpp/clion/plugin/client/handlers/CoverageAndResultsHandler.kt

@@ -49,6 +49,8 @@ class CoverageAndResultsHandler(
         project.messageBus.syncPublisher(UTBotTestResultsReceivedListener.TOPIC)
             .testResultsReceived(response.testRunResultsList)
 
+        logCoverageResponse(response)
+
         val engine = CoverageEngine.EP_NAME.findExtension(UTBotCoverageEngine::class.java)
             ?: error("UTBotEngine instance is not found!")
         val coverageRunner = CoverageRunner.getInstance(UTBotCoverageRunner::class.java)
@@ -65,6 +67,14 @@ class CoverageAndResultsHandler(
         notifyCoverageReceived()
     }
 
+    private fun logCoverageResponse(response: Testgen.CoverageAndResultsResponse) {
+        if (response.errorMessage.isNotEmpty())
+            logger.warn(response.errorMessage)
+        if (response.coveragesList.isEmpty())
+            logger.error("No coverage received from server!")
+        logger.trace("coverage list: \n${response.coveragesList}")
+    }
+
     private fun notifyCoverageReceived() {
         if (sourceFilePath != null) {
             notifyInfo("Coverage received!", project, FocusAction(sourceFilePath))