Force IOException during file reading
- by DixonD
I have the piece of code that reads data from file. I want to force IOException in this code for testing purpose (I want to check if code throws correct custom exception in this case).
Is there a some way to create a file which is protected from being read, for example? Maybe dealing with some security checks can help?
Please, note that passing name to not-existent file cannot help, because FileNotFoundException has separate catch clause.
Here peace of code for better undestanding of question:
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader(csvFile));
String rawLine;
while ((rawLine = reader.readLine()) != null) {
// some work is done here
}
} catch (FileNotFoundException e) {
throw new SomeCustomException();
} catch (IOException e) {
throw new SomeCustomException();
} finally {
// close the input stream
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
// ignore
}
}
}
