Sensible patterns and practices 😇

Atomic tests ⚛️

• Write targeted tests
• No more than 2 assertions per test 2️⃣
• Outcome of one test should not cause another to fail

💡Follow TRIMS 👍- Richard Bradshaw, Ministry of testing

Use explicit waits 🛑

• Avoid writing hardcoded sleeps/implicit waits

Use API ⚙️ or DB for data setup/teardown

Set application state ⏩ using:

• API
• Inject JS
• Cookies
• Modify DB

Arrange act assert ❤️

• Setup state => Perform a test => Assert => Cleanup

Run tests in parallel from the start 🏃 🏃 🏃

• Atomic tests + parallel 🤝
• Use Selenium Grid 👍
• Create a new webdriver instance for every test
• Don't use static keyword/shared state

Page object

• Write page objects for components within pages
• Naming that clarifies intent

Fluent pattern 🏃

@Test(groups = Tags.REGRESSION)
public void testToDoItemsLeft() {
    HomePage home = new HomePage(driver);
    home.addTodo("Get work done");
    home.addTodo("relax");
    ...
}

@Test(groups = Tags.REGRESSION)
public void testToDoItemsLeft() {
    // More readable 😄
    HomePage home = new HomePage(driver)
            .addTodo("Get work done")
            .addTodo("relax");
    ...
}

How is this enabled?

💡return either the current page object or the next page object to enable fluent methods

public HomePage addTodo(String todoNote) {
        enterText(todo, todoNote);
        pressEnter(todo);
        return this;
    }

Can use this in assertions as well

// TestNG assert
Assert.assertEquals(addedTodosText, note);

// Google truths fluent assert
assertThat(addedTodosText).isEqualTo(note);

Page factory

• Easily specify WebElement/s to be found
• Use @CacheLookup to keep WebElement for static elements

public class HomePage extends BasePage {
    public HomePage(WebDriver driver) {
        super(driver);
        PageFactory.initElements(driver, this);
    }

    @FindBy(css = "#root input")
    WebElement todo;

    @FindBy(xpath = "//ul[@class='todo-list']//label")
    List<WebElement> todos;

    String addedNote =
            "//ul[@class='todo-list']//label[contains(text(), '%s')]";

    ...

    public HomePage addTodo(String todoNote) {
        enterText(todo, todoNote);
        pressEnter(todo);
        return this;
    }
    ...
}

Screenplay pattern

• Follows SOLID principles and takes a user centric view of writing automated acceptance tests
• Check out Serenity BDD

Builder pattern

• Use this to construct complex data objects instead of multiple constructor params