How do I simulate browser actions like clicking or form submission with Kanna?

Kanna is a Swift library for parsing HTML and XML. It allows you to search and manipulate HTML/XML content using XPath and CSS selectors. However, it does not have capabilities for simulating browser actions like clicking or form submission as it isn't a browser automation tool. Kanna is used only for parsing and extracting data from HTML/XML content.

If you want to simulate browser actions in a Swift environment, you would typically use a tool like Selenium WebDriver with a language binding for Swift or use Apple's XCTest framework for UI testing in a macOS or iOS application.

However, there is no official Selenium WebDriver binding for Swift. Most developers would either use the WebDriver directly with WebDriverAgent (a WebDriver server for iOS that runs inside the Simulator) or use a different language that has Selenium support, like Python or JavaScript.

For web scraping and browser automation in Python, you can use libraries like selenium along with a browser driver (e.g., ChromeDriver for Google Chrome, geckodriver for Firefox):

from selenium import webdriver
from selenium.webdriver.common.keys import Keys

# Set path to the webdriver executable
driver_path = '/path/to/chromedriver'

# Initialize the driver
driver = webdriver.Chrome(executable_path=driver_path)

# Go to the webpage
driver.get('http://example.com')

# Find element by id and click
element = driver.find_element_by_id('some_id')
element.click()

# Find form element and submit form
form = driver.find_element_by_id('form_id')
form.submit()

# Close the browser
driver.quit()

And for JavaScript, you would use libraries like puppeteer or playwright:

const puppeteer = require('puppeteer');

(async () => {
  // Launch the browser
  const browser = await puppeteer.launch();

  // Open a new page
  const page = await browser.newPage();

  // Go to the webpage
  await page.goto('http://example.com');

  // Click element by selector
  await page.click('#some_id');

  // Submit form by selector
  await page.$eval('#form_id', form => form.submit());

  // Close the browser
  await browser.close();
})();

If you are specifically interested in macOS or iOS UI automation (not web scraping), then you might want to look into XCTest's UI testing capabilities, which allow you to simulate user actions like tapping buttons, entering text, and more:

import XCTest

class MyUITests: XCTestCase {

    let app = XCUIApplication()

    override func setUp() {
        super.setUp()
        // Put setup code here. This method is called before the invocation of each test method in the class.

        // In UI tests it is usually best to stop immediately when a failure occurs.
        self.continueAfterFailure = false
        // UI tests must launch the application that they test. Doing this in setup will make sure it happens for each test method.
        app.launch()
    }

    func testExample() {
        // Simulate a tap on a button
        let button = app.buttons["ButtonIdentifier"]
        button.tap()

        // Enter text in a text field
        let textField = app.textFields["TextFieldIdentifier"]
        textField.tap()
        textField.typeText("Hello, world!")

        // Simulate a form submission if the form is part of a native app
        let submitButton = app.buttons["SubmitButtonIdentifier"]
        submitButton.tap()
    }
}

Remember, XCTest is for testing iOS and macOS applications, not for web scraping or automating web browsers. For web scraping and automation, you need to use tools like Selenium, Puppeteer, or Playwright with the appropriate language bindings.