Once you install Playwright and execute your test, you will find your single test will run on three browsers with two workers running two browsers simultaneously.

Cross-Browser Testing by default is a nice feature, but while creating or debugging scripts, we want to save time by executing on one browser at a time and testing on other browsers.

So you can stop running the scripts on multiple browsers in two ways: by making changes in the config file and giving command line parameters for a specific browser.

Method 1: Comment Other Browser in Config File

 /* Configure projects for major browsers */
  projects: [
    {
      name: 'chromium',
      use: {
        ...devices['Desktop Chrome'],
      },
    },

    // {
    //   name: 'firefox',
    //   use: {
    //     ...devices['Desktop Firefox'],
    //   },
    // },

    // {
    //   name: 'webkit',
    //   use: {
    //     ...devices['Desktop Safari'],
    //   },
    // },
};

Now, your test will execute on chrome only. This is not an efficient approach, so I would recommend Method 2. 

Method 2: Give Command Line Option

npx playwright test testName.spec.ts --project=chromium

• Here, the project can be replaced with p also.
• For Firefox, use value firefox, and for Safari, use webKit.