求教，这我要怎么才能避免在测试中避免遇到用户输入啊？
重新发试试
public class Fileoperator {
private ArrayList<Person> saveList;
private Scanner scanner;
int age;
String name;
int income;
int expenditure;
int willingnesstoInvest;
String exit;
public Fileoperator() {
saveList = new ArrayList<>();
scanner = new Scanner(System.in);
processOperations();
}
public void saveListSetter(ArrayList<Person> input) {
saveList = input;
}
public ArrayList<Person> saveListGetter() {
return saveList;
}
private void processOperations() {
while (true) {
Person personEntry = setPerson();
if (exit.equals("yes")) {
personEntry.updateMaster(age, name, income, expenditure, willingnesstoInvest);
personResult(personEntry);
break;
}
personEntry.updateMaster(age, name, income, expenditure, willingnesstoInvest);
personResult(personEntry);
System.out.println(personEntry.print());
}
for (Person p: saveList) {
System.out.println(p.print());
}
}
private Person setPerson() {
Person personEntry = new Person(0, "", 0, 0, 0);
System.out.println("Age: ");
age = scanner.nextInt();
scanner.nextLine();
System.out.println("Name: ");
name = scanner.nextLine();
System.out.println("Income: ");
income = scanner.nextInt();
System.out.println("Expenditure:");
expenditure = scanner.nextInt();
System.out.println("Willingness to invest: ");
willingnesstoInvest = scanner.nextInt();
scanner.nextLine();
System.out.println("done?(yes or no)");
exit = scanner.nextLine();
return personEntry;
}
private void personResult(Person p) {
saveList.add(p);
}
public static void mainhelper() {
try {
printload(load());
} catch (IOException e) {
e.printStackTrace();
}
Fileoperator fo = new Fileoperator();
try {
fo.save();
} catch (IOException e) {
e.printStackTrace();
}
}
public void save() throws IOException {
List<String> lines = Files.readAllLines(Paths.get("output.txt"));;
PrintWriter writer = new PrintWriter("output.txt","UTF-8");
for (Person p: saveList) {
lines.add(p.getAge() + ", " + p.getName() + ", " + p.getIncome() + ", " + p.getExpenditure() + ", " + p.getwillingnesstoInvest());
}
for (String line : lines) {
ArrayList<String> partsOfLine = splitOnSpace(line);
System.out.println("Age: " + partsOfLine.get(0) + ", ");
System.out.println("Name: " + partsOfLine.get(1) + ", ");
System.out.println("Income " + partsOfLine.get(2) + ", ");
System.out.println("Expenditure " + partsOfLine.get(3) + ", ");
System.out.println("WillingnesstoInvest " + partsOfLine.get(4) + ", ");
writer.println(line);
}
writer.close(); //note -- if you miss this, the file will not be written at all. }
public static ArrayList<String> splitOnSpace(String line) {
String[] splits = line.split(", ");
return new ArrayList<>(Arrays.asList(splits));
}
public static ArrayList<Person> load() throws IOException {
List<String> lines = Files.readAllLines(Paths.get("output.txt"));
ArrayList<Person> loadList = new ArrayList();
for (String line : lines) {
if (line.equals("")) {
break;
} else {
Person fromline = fromline(line);
loadList.add(fromline);
}
}
return loadList;
}
public static void printload(ArrayList<Person> loadList) {
for (Person p: loadList) {
System.out.println(p.print());
}
}
private static Person fromline(String line) {
Person fromline = new Person(0, "", 0, 0, 0);
ArrayList<String> partsOfLine = splitOnSpace(line);
int age = Integer.parseInt(partsOfLine.get(0));
int income = Integer.parseInt(partsOfLine.get(2));
int expenditure = Integer.parseInt(partsOfLine.get(3));
int willingnesstoInvest = Integer.parseInt(partsOfLine.get(4));
fromline.updateMaster(age, partsOfLine.get(1), income, expenditure, willingnesstoInvest);
return fromline;
}
}
public class FileoperatorTest {
@Test public void testload() throws IOException {
Person d = new Person(20,"David",0,20000,2);
Person r = new Person(30,"Random guy",50000,30000,2);
int index = 0;
ArrayList<Person> check = new ArrayList<> ();
check.add(d);
check.add(r);
load();
for (Person l: load()) {
assertEquals(l.getAge(), check.get(index).getAge());
assertEquals(l.getName(), check.get(index).getName());
assertEquals(l.getIncome(), check.get(index).getIncome());
assertEquals(l.getExpenditure(), check.get(index).getExpenditure());
assertEquals(l.getwillingnesstoInvest(), check.get(index).getwillingnesstoInvest());
index = index + 1;
}
}
@Test public void testsave() throws IOException {
Person test = new Person(30,"test subject",50000,30000,2);
ArrayList<Person> check = new ArrayList<> ();
check.add(test);
Fileoperator fo = new Fileoperator();
fo.saveListSetter(check);
fo.save();
assertEquals(load().get(3).getAge(), check.get(1).getAge());
assertEquals(load().get(3).getName(), check.get(1).getName());
assertEquals(load().get(3).getIncome(), check.get(1).getIncome());
assertEquals(load().get(3).getExpenditure(), check.get(1).getExpenditure());
assertEquals(load().get(3).getAge(), check.get(1).getAge());
}
}
- 1
用户5600008129
下面是我的Fileoperator class。那个mainhelp method我会在Main class中用。
然后下图是我的Fileoperatortest class。
我在这里遇到了一个问题，本来设计Fileoperator class的时候，我是想着输入user inputs然后用save method保存起来的。但是我没法直接用save method，只能新建一个Fileoperator fo然后才能用fo.save()。然后test的时候save method的test就运行不了，我没法输入数据。
这里我觉得我的问题是就是我把processOperator method放到了Fileoperator的constructor里面然后在processOperator里面我又把setPerson method（需要用到user inputs的method）的值指定给了Person personEntry，PersonEntry会被personResult method拿来创造saveList（这个就是我要用到save method存到output.txt的ArrayList）。我不知道Fileoperator class有没有什么地方能改写的，能让我在保留setPerson method的同时允许我在test class里面能够test save method的。
国外留学刚开始学java，好多东西弄不懂。用了英文还请见谅。