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Tarantula.java
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Tarantula.java
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package tracer.tracing;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class Tarantula {
public static void faultlocalization(String diff, Set<String> changed,
int failednum, int passnum,
HashMap<String, HashSet<String>> test_affchgs,
HashMap<String, HashSet<String>> changeMap, String rank) throws IOException {
if(test_affchgs==null)return;
//System.out.println("failed number: " + failednum+" pass number: "+passnum);
HashMap<String, Double> change_vals = new HashMap<String, Double>();
for (String change : changeMap.keySet()) {
double susval = 0.0;
double all_fail_num = failednum;
double all_pass_num = passnum;
double exe_fail_num = 0;
double exe_pass_num = 0;
if (all_fail_num == 0 || all_pass_num == 0)
susval = 0;
else {
for (String test :test_affchgs.keySet()) {
HashSet<String> set = test_affchgs.get(test);
if (set!=null&&set.contains(change)) {
if (changed.contains(test))
exe_fail_num++;
else
exe_pass_num++;
}
}
susval = (exe_fail_num / all_fail_num)
/ ((exe_fail_num / all_fail_num) + (exe_pass_num / all_pass_num));
}
change_vals.put(change, susval);
}
Heuristic heu = new Heuristic(diff);
BufferedWriter writer = new BufferedWriter(new FileWriter(rank));
for (String s : test_affchgs.keySet()) {
if (!changed.contains(s))
continue;
HashSet<String> chgs = test_affchgs.get(s);
writer.write("<TEST>" + s + " -" + chgs.size() + "\n");
int num = chgs.size();
String[] names = new String[num];
double[] values = new double[num];
int[] heuValues = new int[num];
int i = 0;
for (String chg : chgs) {
names[i] = chg;
values[i] = change_vals.get(chg);
heuValues[i] = heu.getHeuristicValue(chg);
i++;
}
sort(names, values, heuValues, 0, num - 1);
for (i = 0; i < num; i++) {
writer.write(names[i] + ": " + values[i] + " - " + heuValues[i]
+ "\n");
}
}
writer.flush();
writer.close();
}
public static void sort(String[] names, double[] values, int[] heuValues,
int start, int end) {
if (start >= end)
return;
int pivot = partition(names, values, heuValues, start, end);
sort(names, values, heuValues, start, pivot - 1);
sort(names, values, heuValues, pivot + 1, end);
}
public static int partition(String[] names, double[] values,
int[] heuValues, int start, int end) {
double key = values[start];
double heuKey = heuValues[start];
int i = start, j = end;
while (i < j) {
while (i < j
&& (values[j] < key || (values[j] == key && heuValues[j] <= heuKey)))
j--;
if (i >= j)
break;
String stemp = names[j];
names[j] = names[i];
names[i] = stemp;
double vtemp = values[j];
values[j] = values[i];
values[i] = vtemp;
int htemp = heuValues[j];
heuValues[j] = heuValues[i];
heuValues[i] = htemp;
i++;
while (i < j
&& (values[i] > key || (values[i] == key && heuValues[i] >= heuKey)))
i++;
if (i >= j)
break;
stemp = names[j];
names[j] = names[i];
names[i] = stemp;
vtemp = values[j];
values[j] = values[i];
values[i] = vtemp;
htemp = heuValues[j];
heuValues[j] = heuValues[i];
heuValues[i] = htemp;
j--;
}
return i;
}
public static double localization(String coverage, String diff,
List<String> list) throws IOException {
double res = 0.0;
double count = 0.0;
BufferedReader reader = new BufferedReader(new FileReader(coverage));
List<String> changes = FaultTracer.getTypedAtomicChanges(diff);
String line = reader.readLine();
double sum = 0.0;
while (line != null) {
if (line.startsWith("<TEST>")) {
String testName = FaultTracer.dropTag(line);
if (list.contains(testName)) {
// System.out.println("testName:"+testName);
count++;
HashSet<String> affectingChanges = new HashSet<String>();
line = reader.readLine();
while (line != null && !line.startsWith("<TEST>")) {
if (!line.contains("-")) {
if (!line.startsWith("<class")) {
for (String change : changes) {
if (change.contains(line)) {
affectingChanges.add(change);
}
}
} else {
String receiver = FaultTracer.getReceiver(line);
String meth = FaultTracer.getMethod(line);
String method = receiver + "." + meth;
for (String change : changes) {
if (change.contains(method)) {
affectingChanges.add(change);
}
}
}
} else if (line.startsWith("<FR>")) {
String field = line
.substring(line.indexOf("-") + 1);
for (String change : changes) {
if (change.contains(field))
affectingChanges.add(change);
}
} else if (line.startsWith("<FW>")) {
}
line = reader.readLine();
}
sum += affectingChanges.size();
// System.out.println("test:"+testName+"-"+affectingChanges.size());
} else
line = reader.readLine();
} else
line = reader.readLine();
}
res = sum / count;
return res;
}
}