CODEWITHSUNDEEP
javaselenium-webdrivertestingautomated-teststestng
user14872822
user14872822

Reputation:

I tried several options but this error still occurs: org.testng.TestNGException: Check to make sure it can be instantiate

Problem: I am a beginner with selenium and automation testing and I am writing a selenium script using java, TestNG, and maven. When I write everything in one class, all works fine, but I want to have a package for all objects, a package for tests, and Base Class with the main setting. The project will contain a class for every page from the website and a class for all tests.

What I tried: When I try to modify something appear another error is from the constructor in BaseClass and I have no idea why The base class is this: I tried with

public BaseClass(WebDriver driver) {           
    this.driver = driver; 
    PageFactory.initElements(driver, this);
}

or PagegeFactory.initElements(new AjaxElementLocatorFactory(driver, TimeoutValue), this); and didn't work.

Upvotes: 0

Views: 880

Answers (1)

Krishnan Mahadevan
Krishnan Mahadevan

Reputation: 14746

The basic problem with your code is that you have parameterised your constructor.

TestNG ONLY knows how to invoke the default constructor (no arguments constructor). In your case, you have a parameterised constructor that seems to accept a WebDriver driver instance and TestNG does not know how to instantiate this.

The easiest fix to get past this problem would be to do the following:

  1. Remove the parameterised constructor and just stick to default constructor.
  2. Employ an approach which abstracts out the WebDriver logic which your tests can basically invoke to get a WebDriver instance.
  3. Also please try to seggregate page object classes and test classes. (Your current class AnalizesiPreturi violates this expectation)

Sometime back I built a library called autospawn which uses an annotation driven approach for browser instance management.

You can refer to https://github.com/RationaleEmotions/autospawn#how-to-use-testng

Alternatively you can make use of TestNG listeners using which you can instantiate webdriver instance and make it available via a ThreadLocal instance.

For more details please refer to my blog post https://rationaleemotions.com/parallel_webdriver_executions_using_testng/

Upvotes: 0

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