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Smart UI Testing With StoryBook

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Using the LambdaTest platform, you can perform regression testing in just one click and find Visual UI Regression bugs easily with the help of Smart Testing. The @lambdatest/smartui package is LambdaTest's command-line interface (CLI) aimed to help you run your SmartUI tests on LambdaTest platform.

Learn the how to get started with Smart UI testing with StoryBook on the LambdaTest platform.

• Pre-requisites
• Steps To Create A SmartUI Project
• Running Your First StoryBook SmartUI Test

1. Basic understanding of StoryBook is required.
2. Node version installed should be higher than 14.15.0. Click here to know more.
3. StoryBook version installed should be higher than 6.4.0. Click here to know more.
4. Login to LambdaTest SmartUI with your credentials.

The first step is to create a project with the application in which we will combine all your builds run on the project. To create a SmartUI Project, follow these steps:

1. Go to the Projects page.
2. Click on the new project button.
3. Select the platform as Web for executing your StoryBook tests.
4. Add name of the project, approvers for the changes found, tags for any filter or easy navigation.
5. Click on the Submit.

Install required NPM modules for LambdaTest Smart UI StoryBook CLI in your Frontend project.

npm install @lambdatest/smartui-storybook -g

Add the following to your .storybook/main.js. You can read more about this here Storybook Feature flags.

module.exports = {
  features: {
    buildStoriesJson: true,
  },
};

Setup your project token show in the SmartUI app after, creating your project.

For Linux/macOS:

export PROJECT_TOKEN="123456#1234abcd-****-****-****-************"

For Windows:

set PROJECT_TOKEN="123456#1234abcd-****-****-****-************"

You can now configure your project settings on using various available options to run your tests with the SmartUI integration. To generate the configuration file, please execute the following command:

smartui config create .smartui.json

Once, the configuration file will be created, you will be seeing the default configuration pre-filled in the configuration file:

{
  "storybook": {
    "browsers": [
      "chrome",
      "firefox",
      "safari"
      // Add more browser configuration here
    ],
    "resolutions": [
      [1920, 1080]    // Add more view ports to capture here
    ],
    "include": [],    // (Optional) Only compare limited stories
    "exclude": []     // (Optional) Don't compare the stories
  }
}

You can now execute your StoryBook components for Visual Regression Testing using the following options:. Run the following command to run Visual Regression tests on your Storybook components.

smartui storybook http://localhost:6006 --config .smartui.json

You can also provide path to the storybook-static directory instead of the local Storybook URL. Use --help for more information on usage.

Visit the following links to learn more about LambdaTest's features, setup and tutorials around test automation, mobile app testing, responsive testing, and manual testing.

• LambdaTest Documentation
• LambdaTest Blog
• LambdaTest Learning Hub

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