TestNG @Factory annotation + not enough knowledge

问题:

I am just learning dependency injection and I dont get its logic at all. Not to mention, TestNG's requirements are always too bizarre for me.

I have this class that provides the data, and a test class that needs it:

public abstract class AppData { // extends Mailer

    @DataProvider(name = "dataProvider")
    public static Object[][] setUp() throws Exception {


        //prepare the data here - code.

        //pass the data to the test case
        Object[][] setUp = new Object[1][4];
        setUp[0][0] = driver;
        setUp[0][1] = wait;
        setUp[0][2] = array;
        setUp[0][3] = array2;   
        return setUp;
    }
}

and this is the test class

public class AppTest { 

//this is my attempt to make a dependency injection, completely blindly shooting in the dark
    private AppData appdata;

    public AppTest (
            AppData appdata
        ) {
           this.appdata = appdata;
        }



@Factory(dataProviderClass=com.fmydomain.tests.AppData.class,dataProvider="dataProvider")
    public void oneUserTwoUser(WebDriver driver, WebDriverWait wait, ArrayList<ArrayList<String>> array, ArrayList<ArrayList<String>> array2) throws Exception {

    }
}

and Im getting this error when I run it:

org.testng.TestNGException: 
The factory method class com.f1rstt.tests.AppTest3.oneUserTwoUser() threw an exception
    at org.testng.internal.FactoryMethod.invoke(FactoryMethod.java:93)
    at org.testng.internal.TestNGClassFinder.<init>(TestNGClassFinder.java:140)

EDIT: I have also tried the following way:

public class AppTest3 { 

    private AppData appdata = new AppData();

    public AppTest3(AppData appdata) {
        this.appdata = appdata;
    }

    WebDriver driver = AppData.driver;
    WebDriverWait wait = AppData.wait;
    ArrayList<ArrayList<String>> array = AppData.array;
    //ArrayList<ArrayList<String>> array2 = AppData.array2;

    @Parameters({ "driver", "wait", "array" })
    @Test
    public void oneUserTwoUser(WebDriver driver, WebDriverWait wait, ArrayList<ArrayList<String>> array) throws Exception {

but I get this error:

org.testng.TestNGException: 
Parameter 'driver' is required by @Test on method oneUserTwoUser but has not been marked @Optional or defined

回答1:

Answer is provided here, after refactoring and installing a DI framework Spring Framework and TestNG: unable to pass some parameters