How do I test multiple browsers with selenium and a single NUnit suite and keep it DRY?

Question

I\'m looking for a way to reuse one NUnit test suite without duplicating the entire suite for each browser. It seems like I would need a new fixture for each browser. Can I send

Answer 1

Here is an example unit test using a custom XUnit DataAttribute to provide the Driver to the test

using OpenQA.Selenium;
using SeleniumPageObjectsPatternExample.Attributes;
using SeleniumPageObjectsPatternExample.PageObjects;
using Xunit;
using Xunit.Extensions;

public class HomepageTests 
{
    [Theory]
    [Browser(Type.Firefox)]
    [Browser(Type.GoogleChrome)]
    public void HomepageLinksToBlogPage(IWebDriver webDriver)
    {
        // arrange 
        var expected = "some expected value";

        // act
        var homepage = new HomePage(webDriver, true);

        // assert
        Assert.True(homepage.BlogLink.Displayed);
        Assert.Equal(expected, homepage.Header.Text);
    }
}

Here is the custom DataAttribute

using System.Reflection;
using OpenQA.Selenium;
using SeleniumPageObjectsPatternExample.WebDriver;
using Xunit.Extensions;

public class BrowserAttribute : DataAttribute
{
    private IWebDriver WebDriver { get; set; }

    public BrowserAttribute(Type browser)
    {
        this.WebDriver = WebDriverFactory.Create(browser);
    }

    public override IEnumerable GetData(MethodInfo methodUnderTest, System.Type[] parameterTypes)
    {
        return new[] { new[] { this.WebDriver } };
    }
}

Using this WebDriverFactory

using OpenQA.Selenium;
using OpenQA.Selenium.Chrome;
using OpenQA.Selenium.Firefox;

using Type = SeleniumPageObjectsPatternExample.Attributes.Type;

public class WebDriverFactory
{
    public static IWebDriver Create(Type browser)
    {
        IWebDriver webDriver;

        switch (browser)
        {
            case Type.Firefox:
                webDriver = new FirefoxDriver();
                break;
            case Type.GoogleChrome:
                webDriver = new ChromeDriver();
                break;
            default:
                webDriver = new ChromeDriver();
                break;
        }

        webDriver.Manage().Window.Maximize();

        return webDriver;
    }
}

And the browser type enum

public enum Type
{
    Firefox,
    GoogleChrome
}

I would advise you change the name of the enum from Type to something else...