Added deletion of generated text file to example tests.

Author: jsrehak

example_and_tests/example/tests/file_writer_test.cpp

@@ -1,3 +1,5 @@
+#include <filesystem>
+
 #include <gtest/gtest.h>
 
 #include "example_and_tests/example/file_writer.hpp"
@@ -16,6 +18,7 @@ TEST_F(FileWriterTest, ExecuteTest) {
   test_file_writer.Execute(filename_ + ".txt");
 
   EXPECT_GOLD_FILE_MATCH(filename_ + ".txt", "test_data/" + filename_ + ".gold");
+  EXPECT_TRUE(std::filesystem::remove(filename_ + ".txt")) << "Generated file not found for deletion.";
 }
 
 } // namespace