cta-immutable-file-test now prompts user before carrying out its destructive test

tests/ImmutableFileTest.cpp

@@ -84,6 +84,13 @@ int ImmutableFileTest::exceptionThrowingMain(const int argc, char *const *const
     return 0;
   }
 
+  if(userConfirmsDestroyFile(cmdLine.fileUrl.GetURL())) {
+    m_out << "Starting destructive test on file " << cmdLine.fileUrl.GetURL() << std::endl;
+  } else {
+    m_out << "Aborting" << std::endl;
+    return 0;
+  }
+
   if(cmdLine.fileUrl.IsLocalFile()) {
     exception::Exception ex;
     ex.getMessage() << cmdLine.fileUrl.GetURL() << " is local";
@@ -117,6 +124,23 @@ int ImmutableFileTest::exceptionThrowingMain(const int argc, char *const *const
   return 0;
 }
 
+//------------------------------------------------------------------------------
+// userConfirmsDestroyFile
+//------------------------------------------------------------------------------
+bool ImmutableFileTest::userConfirmsDestroyFile(const std::string &fileUrl) const {
+  m_out << "WARNING" << std::endl;
+  m_out << "You are about to destroy file " << fileUrl << std::endl;
+  m_out << "Are you sure you want to continue?" << std::endl;
+
+  std::string userResponse;
+  while(userResponse != "yes" && userResponse != "no") {
+    m_out << "Please type either \"yes\" or \"no\" > ";
+    std::getline(m_in, userResponse);
+  }
+
+  return userResponse == "yes";
+}
+
 //------------------------------------------------------------------------------
 // fileExists
 //------------------------------------------------------------------------------

tests/ImmutableFileTest.hpp

@@ -74,6 +74,14 @@ private:
    */
   int exceptionThrowingMain(const int argc, char *const *const argv);
 
+  /**
+   * Asks the user to confirm that they want to destroy the specified file.
+   *
+   * @param fileUrl The URL of the file.
+   * @return True if the user confirmed.
+   */
+  bool userConfirmsDestroyFile(const std::string &fileUrl) const;
+
   /**
    * @return True if the specified file exists
    * @param url The XRootD URL of the file to be tested.