Getting Started With Nuxt Testing [A Beginner’s Guide]

How does the Nuxt.js framework work?

The Nuxt.js maintains its contents in a folder structure mechanism. This means that some different folders and files will be used to get the work done. If you are a newbie developer who is not familiar, then it is important to understand the folder structure before you start practically implementing the concepts.

These are the following elements that you should be aware of before you move on to Nuxt testing.

• Assets: This is the folder where you can see all the un-compiled files such as font files, images, JS files, etc.
• Components: This contains all the reusable components the developers can create
• Layouts: This allows you to store the application-specific layouts. This can be useful when designing an application with different layout requirements.
• Middleware: This is the folder where you can place your essential JS files before a page is rendered.
• Pages: This is a folder specific to developer use.
• Plugins: This folder allows storing files that should be running before mounting the Vue.js root application.
• nuxt.config.js: This file allows you to handle configuration settings for your application.

Application Types Supported in Nuxt.js

Before we delve deeper into Nuxt testing, It allows developers to create three different application types, depending upon the development requirements:

• Static Generated Pages These applications do not require any API requests to fetch page content, which means that most of the content is already available in the HTML file itself. A great example of a static site is a product landing page where the content is already available once loaded.
• Single Page Application Most JavaScript frameworks like Angular, React, etc. are single-page applications with content populated with fast transitions. You can use HTML5 history API or location hash for routing purposes.
• Server-Side Rendering This is a technique developers use to display and fetch client-side data on the server.

Limitations of Nuxt.js framework

Here are some limitations you should know before using the Nuxt.js framework for web development.

• It has a smaller community, which means that there are fewer resources available online. The product documentation also needs improvement in the long run.
• The overall high traffic can impact the server performance.
• Some of the solid plugins or components must be maintained well so that third-party integrations can be performed seamlessly.

Different methodologies to test Nuxt.js applications

Apart from using the specialized cross-browser testing platform, other supported methods can be implemented for testing the Nuxt.js application. The following three types of Nuxt testing can be performed:

• Unit Testing: Unit testing is performed by developers to test the procedures or impacted functionalities. You can use many unit testing frameworks to perform it.
• Component Testing: Component testing is used to perform usability testing of each component.
• End-to-End(E2E) Testing: In end-to-end testing, you perform the testing of the entire application from start to finish.

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How to perform Nuxt testing using Playwright?

You can use the Playwright framework to perform cross browser testing of your Nuxt.js application. You can use Playwright as a testing framework for your testing requirements, but having a basic knowledge of Nuxt.js will always be a great value add.

• You need to install a new Nuxt project and all the required dependencies.
• Once the project is installed, it is required to build a reusable component. You can always create your components by following standard coding. We are building a reusable component named as JobRoles.vue:

  <template>
  <li>
  <nuxt-link :to="link" class="block hover:bg-gray-50">
  <div class="px-4 py-4 sm:px-6">
  <div class="flex items-center justify-between">
  <p class="text-md font-medium text-blue-500 truncate">
  {{ title }}
  </p>
  <div class="ml-2 flex-shrink-0 flex">
  <p class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full bg-green-100 text-green-800">
  {{ salary }}
  </p>
  </div>
  </div>
  </div>
  </nuxt-link>
  
  </template>
  <script>
  export default {
  props:
  {
  title: {
  type: String,
  default: ''
  },
  salary: {
  type: String,
  default: ''
  },
  link: {
  type: String,
  default: ''
  }
  }
  }
  </script>
   
  
  

• We will now use the JobRoles component as a template:

  pages/index.vue
  <template>
  <div class="max-w-sm mx-auto mt-8">
  <div>
  <h2 class="text-xl">
  Job Board
  </h2>
  <span class="text-xs block pb-4">Awesome Jobs for awesome IT people</span>
  </div>
  <div class="shadow overflow-hidden sm:rounded-md">
  <ul id="job-list" role="list" class="divide-y divide-gray-200">
  <JobRoles v-for="job in jobs" :key="job.title" :title="job.title" :salary="job.salary" :link="job.link" />
  </ul>
  </div>
  </div>
  </template>
   
  <script>
  export default {
  data () {
  return {
  jobs: [
  {
  title: 'Java Developer',
  salary: '90000',
  link: '/job/java-developer'
  },
  {
  title: 'Devops Developer',
  salary: '120000',
  link: '/job/devops-developer'
  },
  {
  title: 'Reactjs Developer',
  salary: '21000',
  link: '/job/reactjs-developer'
  }
  ]
  }
  }
  }
  </script>
  
  

• Once you run the app and view the changes in the browser, the following output is displayed:

  Job Board
  Awesome Jobs for awesome IT people
  Java developer           90000
  DevOps Developer           120000
  Reactjs Developer          21000
  

• You need to set up your test environment. Create a predefined folder structure to set up your test infrastructure.
• For the test run, you can add a test script to the package.json. Once the required test scripts are added, you can run your tests using the following command:

  yarn test
  

Now, you can build your end-to-end test setup with a Playwright test runner. This means you are performing browser testing instead of unit testing. You can add additional libraries based on your requirements. You can start writing your tests.

Now you can test whether the changes related to the job board are correct or not. You can also save screenshots and even record videos that can be used for future reference. Once all the changes are validated, you can execute your tests. You can also perform automation testing for your test results so that you do not have to perform additional steps every time.

If you are new to Playwright, you can watch this video to learn how to set up the Playwright test automation framework and get started with Playwright testing.

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Performing Nuxt testing using third-party tools

There are many Nuxt testing tools that can help you quickly take screenshots of your site in a range of browsers and versions that you are choosing. The great part about such tools is their free-of-cost availability. This works best when you are working on simple content pages.

You can also use codeless automation testing tools, which allow you to automate repetitive tasks across multiple browsers. If you sign up, you can find several demo test suites that can help you understand the tool much better. You can have a free and paid version of this tool based on your requirements.

How Does @nuxt/test-utils Change Nuxt.js Testing Today?

@nuxt/test-utils changes Nuxt.js testing today by adding an official Nuxt-runtime test environment for composables like useFetch that a plain Vue unit test cannot reproduce, closing a gap this article's unit and component testing methods do not cover on their own. The official Nuxt testing documentation splits tests into two locations and lets you choose the runner for each.

• test/unit/ tests: run in a plain Node environment for speed, without starting the Nuxt runtime.
• test/nuxt/ tests: run inside a simulated Nuxt runtime so composables, NuxtLink, and route middleware behave the way they do in the browser.
• DOM environment choice: happy-dom or jsdom render the page for a Nuxt-runtime test, with Vitest as the supported runner for that environment.
• Runner choice for end-to-end tests: Vitest, Cucumber, Jest, or Playwright can each run end-to-end tests, though only Vitest currently works inside the Nuxt-runtime environment itself.
• Built-in Playwright support: @nuxt/test-utils also uses Playwright under the hood for full end-to-end browser tests, in addition to the Playwright setup this article walks through separately.

These options sit alongside the Playwright walkthrough covered earlier in this article, so a team can add Nuxt-runtime coverage without replacing existing unit and end-to-end tests.

How to perform Nuxt testing using TestMu AI?

Looking for a complete end-to-end platform for cross browser testing your Nuxt.js application? This is when you can use a unified platform such as TestMu AI that helps you to automate your test scenarios. It is a cloud-based cloud testing tool that allows you to perform seamless testing across multiple browsers, operating systems, and devices.

TestMu AI allows you to perform cross browser testing at scale over an online browser farm of 3000+ browsers and operating systems.

Here are some great features that make the TestMu AI platform a trusted choice for organizations worldwide:

• Live testing of your websites, web apps, and mobile apps.
• Automated browser testing using frameworks like Selenium, Cypress, Playwright, Puppeteer, etc.
• Real device cloud to test web and mobile apps.
• Mobile app test automation using frameworks like Appium, Espresso, and XCUITest.
• Get 70% faster execution with HyperExecute. Watch this webinar to know how HyperExecute can help businesses achieve quicker time-to-market by intelligently reducing the test execution time.

• Perform responsive testing and smart UI testing.
• You can perform local page testing so your application or website can discover the issues before they are deployed onto the production environment.
• You can perform geolocation testing from different locations, indicating that different teams can easily collaborate to deliver exceptional outcomes.

The features mentioned above indicate that the TestMu AI platform is here to make an impact in the long run. It means providing the right cloud-based platform so that development and testing teams can perform testing intelligently.

You can also compare other cross browser testing tools available online for testing across multiple browsers.

TestMu AI is still far ahead of its competitors regarding performance and end-user experience. When you are using cloud-based technology, you can save additional costs when it comes to IT infrastructure and standalone deployments. This means you are not required to set up different teams for test design, infrastructure, and deployment. The cloud-based approach is an end-to-end solution for infrastructure and deployment requirements.

Let us try and understand how these two different testing approaches can be implemented in the TestMu AI platform:

• Manual Cross Browser Testing The manual testing approach, in contrast to the automation testing approach, is all about a human intervention that takes a lot of time and effort. You must decide on the test cases executed across multiple devices and operating systems. Once the test cases are finalized, you must execute them on different browsers and operating systems. This type of testing can be handy when the testing requirements are not that complex and you are well aware of the testing scope. In the case of an iterative development approach where development and testing go hand in hand, it becomes a lot more challenging to perform manual testing because the system functionality changes drastically. We can then automate our testing requirements to achieve the desired results.
• Automation Cross Browser Testing Automated browser testing leads the way in testing complex web and mobile applications. TestMu AI allows you to monitor and track your automated builds to check your application’s progress in real-time. It all comes down to choosing the right automation tool based on your testing requirements.

Performing automated Nuxt testing using TestMu AI

Here is the step-by-step procedure to kickstart configuration for automated cross browser testing using TestMu AI:

Step 1: Sign up or Log in to your TestMu AI account.

Step 2: You can click the Automation tab in the left navigation, which allows the following options:

• Builds
• Test Archive
• Analytics

You can migrate your changes from SauceLabs, BrowserStack or Headspin. If not, you can select a language or testing framework from the options available on the UI.

Step 3: If we select Java as the language, you must configure the project setup and OS/Browser configuration using the following screen. You can execute your test case by configuring the required details.

Now that you know the dynamics behind Manual and Automation testing, you can explore the TestMu AI platform for performing cross browser testing of your Nuxt.js applications. It is always preferable to automate your test requirements for better system performance and productivity.

Performing manual Nuxt testing using TestMu AI

If you want to skip automation testing, TestMu AI allows you to perform cross browser testing using different browsers and operating systems instead of depending upon different testing frameworks. You can get it done in a few steps in a shorter time.

The following options are provided under Real Time Testing:

• Browser Testing
• Mobile App (Virtual)
• LT Browser

You can perform cross browser testing on either desktop or mobile devices. Follow these steps to perform online browser testing on virtual machines:

Step 1: Sign up or Log in to your TestMu AI account.

Step 2: Go to Real Time Testing -> Browser Testing. Select the browser, OS, and resolution from the available options.

Step 3: Once all the required details are entered, click START. You can now perform Nuxt testing on your selected Nuxt website.