我有一个 CSV 阅读器类,我有一个用户创建者类。我希望用户创建者类获取由 CSV 阅读器生成的数组并将数据分配给一些变量,但我得到一个空指针异常
这是 CSV 阅读器类:
public class CSVData {
private static final String FILE_PATH="C:\\250.csv";
@Test
public static void main() throws Exception {
CSVReader reader = new CSVReader(new FileReader(FILE_PATH));
ArrayList<ArrayList<String>> array = new ArrayList<ArrayList<String>>();
String[] nextLine;
while ((nextLine = reader.readNext()) != null) {
ArrayList<String> list = new ArrayList<String>();
for (int i=0;i<5;i++) { //5 is the number of sheets
list.add(nextLine[i]);
}
array.add(list);
}
/*for(int x=0;x<array.size();x++) {
for(int y=0;y<array.get(x).size();y++) {
}
}*/
AppTest3 instance = new AppTest3();
instance.settingVariables(array);
reader.close();
}
}
这是用户创建者类
public class AppTest3 extends AppData (which extends CSVData) {
private String[] firstname;
private String[] lastname;
public void settingVariables(ArrayList<ArrayList<String>> array) {
int randomUser1 = randomizer (1, 250);
int randomUser2 = randomizer (1, 250);
String firstname1 = array.get(randomUser1).get(0);
String firstname2 = array.get(randomUser2).get(0);
String lastname1 = array.get(randomUser1).get(1);
String lastname2 = array.get(randomUser2).get(1) ;
//firstname = { firstname1, firstname2 }; //this doesnt work, dunno why
//lastname = { lastname1, lastname2 };
firstname[0] = firstname1.replace(" ", "");
firstname[1] = firstname2.replace(" ", "");
lastname[0] = lastname1.replace(" ", "");
lastname[1] = lastname2.replace(" ", "");
}
@Parameters({ "driver", "wait" })
@Test(dataProvider = "dataProvider")
public void oneUserTwoUser(WebDriver driver, WebDriverWait wait)
throws Exception {
// A user signs up, then signs out, then a second user signs up
for (int y = 0; y < 2; y++) {
String email = firstname[y].toLowerCase() + randomNumber + "@"
+ lastname[y].toLowerCase() + emailSuffix;
//test here
}
}
这是错误信息
FAILED: oneUserTwoUser(org.openqa.selenium.support.events.EventFiringWebDriver@5efed246, org.openqa.selenium.support.ui.WebDriverWait@2b9f2263)
java.lang.NullPointerException
at com.pragmaticqa.tests.AppTest3.oneUserTwoUser(AppTest3.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
PS: System.out.println(firstname[0]); 在控制台中不显示任何内容。System.out.println(array); 显示数组列表。
编辑:我发现了问题所在:首先我改变了我初始化 string[] 的方式
String[] firstname = new String[2];
String[] lastname = new String[2];
现在 firstname[0] 返回一个值。
但是,当我在下一个实际包含测试用例的方法中尝试 system.out.println firstname[0] 时,它返回 null。
所以我必须找到一种方法将这些字符串传递给该方法。