How to use AssertJUnit class of org.testng package

Here is the better way to do it. But thanks anyways sanbhat.

You can just create a main method which will have list of all test classes to be executed as follows:

public static void main(String[] args) {
TestListenerAdapter tla = new TestListenerAdapter();
TestNG testng = new TestNG();
testng.setTestClasses(new Class[] { test_start.class });
testng.addListener(tla);
testng.run();
}

Here is the reference URL from the official testng website.

http://testng.org/doc/documentation-main.html#running-testng-programmatically

Cheers!

Basically the same answer as rzwitserloot gave but in a different order.

java.lang.NullPointerException

The stack trace complains about a NullPointerException. This means that a reference that should have pointed to an object was not pointing to anything (i.e. the reference was null).

So why was it null? For that you have to look at the next part of the stack trace. Each line describes a method. Each time a new method is called inside another a line is added. The format is <package>.<class>.<method>(<file:line>).

    at java.util.Objects.requireNonNull(Objects.java:203)
    at org.openqa.selenium.support.ui.FluentWait.<init>(FluentWait.java:106)
    at org.openqa.selenium.support.ui.WebDriverWait.<init>(WebDriverWait.java:85)
    at org.openqa.selenium.support.ui.WebDriverWait.<init>(WebDriverWait.java:45)
    at Tests.Test(Tests.java:15)

So the first few lines aren't your code. The first line is from java, the other ones are from selenium. Your code starts at Tests.Test(Tests.java:15).

So what happens at this line?

WebDriverWait wait = new WebDriverWait(driver, 6000);

At this line you are creating a new instance of WebDriverWait. You pass two arguments to the constructor. The second one is a number and clearly not null. The first one driver is a reference to a WebDriver. Because the other argument can't be null, this one probebly is.

So why would driver be null?

You've declared the driver a field in the Hooks class. And by default if you don't assign a value when declaring the field it's value is null.

public class Hooks
{
    public WebDriver driver;

So problem located.

But you say, you are giving driver a value in the Setup method!

public class Hooks
{
    public WebDriver driver;
   @BeforeMethod
    public void Setup() throws InterruptedException
    {
        ...
        WebDriver driver = new ChromeDriver();
        ...
    }

Because you've added WebDriver before driver = new ChromeDriver(); it means you've created a local variable with the same name as the class field driver. Because local variables are more important then class fields the driver name in the Setup method now only refers to the local variable.

To assign the driver to the field you can either use this.driver = driver after creating the new ChromeDriver. Or you can remove WebDriver and only write driver = new ChromeDriver(); to assign the new ChromeDriver to the class field.

This cast will not take the effect you are trying:

((SuperClass) adc).getObject("", "", null)

The getObject method that is called is the one of the adc instance, regardless of the cast. The cast is compile-time sugar only.

You'll need to change the design, like using different method names, or composition instead of inheritance. Other possibility is to override the superclass in test runtime, copying a modified version to test source with same package of the original:

Like this:

src/main/java
             \-------- com.xyz.pac
                  \--------- SuperClass.java
                  \--------- ChildClass.java
src/test/java
             \-------- com.xyz.pac
                  \--------- SuperClass.java
             \-------- test.com.xyz
                  \--------- MyTest.java

This only affect your tests. Test packages are not available at runtime.

I always use this code to move a slide bar:

action.click(webElement).build().perform();
Thread.sleep(1000);
for (int i = 0; i < 10; i++) {
    action.sendKeys(Keys.ARROW_LEFT).build().perform();
    Thread.sleep(200);
}

Call springTestContextPrepareTestInstance() in your BeforeTest method.

Firefox (via geckodriver) is behaving correctly here and Chrome is not. The W3C WebDriver Specification, in its description of the Element Click algorithm in Section 14.1, step 3 states: “If the element is an input element in the file upload state¹ return error with error code invalid argument.”

When the Chromium team completes spec-compliance for chromedriver, it will behave as geckodriver, IEDriverServer.exe, the current preview version of Microsoft’s driver implementation for Edge, and Apple’s just released driver implementation for Safari 12 all behave.

To successfully upload files using WebDriver, you should use the sendKeys method with the full path to the file you want to upload.

¹Ed. note: ”In the file upload state” is spec-language for an <input type="file"> element.

The issue is here

public ToDoItemDaoImpl() {
    // dataSource is null here
    insert = new SimpleJdbcInsert(dataSource).withTableName("toDoItem").usingGeneratedKeyColumns("id");
}

Spring can only autowire fields after the object has been created. That happens after the constructor is finished.

Spring will use reflection, ie. something like Class.forName(yourClass).newInstance(), to create your bean and then again use reflection to set each property.

However, in your constructor, the field is still null as that is the default value for all uninitialized fields of reference types.

One solution is to leave the constructor empty and add a @PostConstruct annotated method

@PostConstruct
public void init() {
    insert = new SimpleJdbcInsert(dataSource).withTableName("toDoItem").usingGeneratedKeyColumns("id");
}

Another solution is to add that initialization inside the setDataSource() method.

You can use java code record your Test video, for this code to run you also need to add jar file to your project : Reference : Road to automation

@BeforeSuite
        public void startRecording() throws Exception {    

           GraphicsConfiguration gc = GraphicsEnvironment
                   .getLocalGraphicsEnvironment()
                   .getDefaultScreenDevice()
                   .getDefaultConfiguration();

               this.screenRecorder = new ScreenRecorder(gc,
                   new Format(MediaTypeKey, MediaType.FILE, MimeTypeKey, MIME_AVI),
                   new Format(MediaTypeKey, MediaType.VIDEO, EncodingKey, ENCODING_AVI_TECHSMITH_SCREEN_CAPTURE,
                        CompressorNameKey, ENCODING_AVI_TECHSMITH_SCREEN_CAPTURE,
                        DepthKey, 24, FrameRateKey, Rational.valueOf(15),
                        QualityKey, 1.0f,
                        KeyFrameIntervalKey, 15 * 60),
                   new Format(MediaTypeKey, MediaType.VIDEO, EncodingKey, "black",
                        FrameRateKey, Rational.valueOf(30)),
                   null);
       this.screenRecorder.start();

    }

    @AfterSuite
    public void stopRecording() throws Exception {
      this.screenRecorder.stop();
    }

From the official docs at http://testng.org/doc/documentation-main.html#running-testng

Assuming that you have TestNG in your class path, the simplest way to invoke TestNG is as follows:

java org.testng.TestNG testng1.xml