Data Driven Tests in Serenity with JUnit

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In the previous tutorial, I have explained the Testing of Web Application using Serenity with JUnit4. In this tutorial, I will explain Data Driven Tests in Serenity with JUnit4. Serenity provides features to support Data Driven tests. Refer this tutorial to know how to setup a Serenity project with JUnit4.

There is a parameterized Test Runner to perform data driven tests in JUnit4.

@RunWith(SerenityParameterizedRunner.class)

This runner is very similar to the JUnit Parameterized test runner. Here, @TestData annotation is used to provide test data to the test, and you can use all of the other Serenity annotations like (@Managed, @Steps, @Title and so on). This test runner will also generate proper serenity reports for the executed tests.

Below is an example of data-driven serenity test. In this test, I have created a Test Class (ParameterizationTests) and Step Class (StepLoginPage) and Action Class (NavigateActions). I am passing a set of incorrect credentials to the Login page and will verify the error message.

Here is the code for ParameterizationTests.

@RunWith(SerenityParameterizedRunner.class)
public class ParameterizationTests {

    private final String userName;
    private final String passWord;
    private final String errorMessage;

    @Managed(options = "--headless")
    WebDriver driver;

    @Steps
    NavigateActions navigate;

    @Steps
    StepLoginPage loginPage;

    public ParameterizationTests(String userName, String passWord, String errorMessage) {
        super();
        this.userName = userName;
        this.passWord = passWord;
        this.errorMessage = errorMessage;
    }

    @TestData(columnNames = "Username, Password, ErrorMessage")
    public static Collection<Object[]> testData() {
        return Arrays.asList(new Object[][] { { "Admin12", "", "Password cannot be empty" },
                { "", "abc12", "Username cannot be empty" }, { "_Admin1", "admin123_", "Invalid credentials" },
                { " ", " ", "Username cannot be empty" } });
    }

    @Qualifier
     public String qualifier(){return " - " + " Username = " + userName + " and " + " Password = " + passWord + " should display " + errorMessage;}
    @Test
    @Title("Login to application with invalid credential generates error message")
    public void unsuccessfulLogin() {

        // Given
        navigate.toTheHomePage();

        // When
        loginPage.inputUserName(userName);
        loginPage.inputPassword(passWord);
        loginPage.clickLogin();

        // Then
        Serenity.reportThat("Passing invalid credentials generates error message",
                () -> assertThat(loginPage.loginPageErrorMessage()).isEqualToIgnoringCase(errorMessage));
    }

}

@TestData is the annotation for a method which provides parameters to be injected into the test class constructor by Parameterized. testData() method returns an array list of objects as shown above.

The test data is injected into member variables – userName and passWord. These values are represented as instance variables in the test class, and instantiated via the constructor. These member variables are used in the test.

@Managed is annotated as a WebDriver field that is managed by the Test Runner. The Serenity Test Runner will instantiate this WebDriver before the tests start, and close it once they have all finished.

Here is the code for the StepLoginPage.

public class StepLoginPage extends PageObject {

    @FindBy(name = "txtUsername")
    WebElementFacade username;

    @FindBy(name = "txtPassword")
    WebElementFacade txtPassword;

    @FindBy(name = "Submit")
    WebElementFacade submitButton;

    @FindBy(id = "spanMessage")
    WebElementFacade errorMessage;

    @FindBy(xpath = "//*[@id='forgotPasswordLink']/a")
    WebElementFacade forgotPasswordLinkText;

    @Step("Enter Username")
    public void inputUserName(String userName) {
        $("[name='txtUsername']").sendKeys((userName));
    }

    @Step("Enter Password")
    public void inputPassword(String passWord) {
        txtPassword.sendKeys((passWord));
    }

    @Step("Click Submit Button")
    public void clickLogin() {
        submitButton.click();
    }

    @Step("Error Message on unsuccessful login")
    public String loginPageErrorMessage() {
        return errorMessage.getText();
    }

    @Step("Click Forget Password Link")
    public void clickForgetPasswordLink() {
        forgotPasswordLinkText.click();
    }
}

NavigateActions

public class NavigateActions extends UIInteractionSteps {

    @Step
    public void toTheHomePage() {
        openPageNamed("loginForm");
    }
}

There are two ways to run the tests.

  1. Run the tests as JUnit Tests. Right click on the test and select Run As ->JUnit Test.

2. Run the tests through command line using below command.

mvn clean verify

This will run the tests as well as generate the test execution reports – Index.html and serenity-emailable.html.

So, the tests are run and the reports are generated at the shown path.

Index.html

The heading of parameters present in the Serenity Report (Index.html) like Username, Password and Error Message are generated by @TestData as shown below:

@TestData(columnNames = "Username, Password, ErrorMessage")

The description of Test Step in the Serenity Report is modified by using @Qualifier.

It is used to mark a method as a qualifier in an instantiated data-driven test case.

  @Qualifier
    public String qualifier(){return " - " + " Username = " + userName + " and " + " Password = " + passWord + " should display " + errorMessage;}

Serenity-Summary.html

It is a single-page, self-contained HTML summary report, containing an overview of the test results, and a configurable breakdown of the status of different areas of the application.

We are done! Congratulations on making it through this tutorial and hope you found it useful! Happy Learning!!

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