in src/main/java/junit/runner/BaseTestRunner.java [276:297]
public static String getFilteredTrace(String stack) {
if (showStackRaw()) {
return stack;
}
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
StringReader sr = new StringReader(stack);
BufferedReader br = new BufferedReader(sr);
String line;
try {
while ((line = br.readLine()) != null) {
if (!filterLine(line)) {
pw.println(line);
}
}
} catch (Exception IOException) {
return stack; // return the stack unfiltered
}
return sw.toString();
}