PercyIO.Appium 3.0.8

percy-appium-dotnet

Percy visual testing for .NET Selenium.

NuGet

NuGet Package:

Dependencies:

• Newtonsoft.Json Version >= 13.0.1
• Castle.Core Version >= 4.3.1
• Microsoft.CSharp Version >= 4.7.0

Note: This package is tested against .netstandard 2.0 should be compatible with and standard that is superset of this.

Installation

npm install @percy/cli (requires Node 14+):

$ npm install --save-dev @percy/cli

Install the PercyIO.Appium package (for example, with .NET CLI):

$ dotnet add package PercyIO.Appium

Usage

This is an example test using the Percy.Snapshot method.

// ... other test code
// import
using PercyIO.Appium;
class Program
{
  private static AppPercy percy;
  static void Main(string[] args)
  {
    AppiumOptions capabilities = new AppiumOptions();
    // Add caps here
    AndroidDriver<AndroidElement> driver = new AndroidDriver<AndroidElement>(
          new Uri("http://hub-cloud.browserstack.com/wd/hub"), capabilities);
​
    // take a snapshot
    appPercy = new AppPercy(driver);
    appPercy.Screenshot("dotnet snaphot-1", null);

    // quit driver
    driver.quit();
  }
}

Running the above normally will result in the following log:

[percy] Percy is not running, disabling snapshots

When running with percy exec, and your project's PERCY_TOKEN, a new Percy build will be created and snapshots will be uploaded to your project.

$ export PERCY_TOKEN=[your-project-token]
$ percy app:exec -- [your dotnet test command]
[percy] Percy has started!
[percy] Created build #1: https://percy.io/[your-project]
[percy] Screenshot taken "dotnet snaphot-1"
[percy] Stopping percy...
[percy] Finalized build #1: https://percy.io/[your-project]
[percy] Done!

Configuration

The screenshot method arguments:

  ScreenshotOptions options = new ScreenshotOptions();
  // Set options here
  percy.screenshot(name, fullScreen, options)

• name (required) - The screenshot name; must be unique to each screenshot
• Additional screenshot options (overrides any project options):
  • fullScreen - (optional) It indicates if the app is a full screen
  • options - (optional) configure screenshot using below options:

Running with Hybrid Apps

For a hybrid app, we need to switch to native context before taking screenshot.

• Add a helper method similar to following for say flutter based hybrid app:

public void PercyScreenshotFlutter(AppPercy appPercy, AndroidDriver<AndroidElement> driver, String name, ScreenshotOptions options) {
    // switch to native context
    driver.Context = "NATIVE_APP";
    appPercy.Screenshot(name, options);
    // switch back to flutter context
    driver.Context = "FLUTTER";
}

• Call PercyScreenshotFlutter helper function when you want to take screenshot.

PercyScreenshotFlutter(appPercy, driver, name, options);

Note:

For other hybrid apps the driver.Context = "FLUTTER"; would change to context that it uses like say WEBVIEW etc.

Migrating Config

If you have a previous Percy configuration file, migrate it to the newest version with the config:migrate command:

$ percy config:migrate

Running Percy on Automate

percyScreenshot(driver, name, options) [ needs @percy/cli 1.27.0-beta.0+ ];

This is an example test using the Percy.Screenshot method.

// ... other test code
// import
using PercyIO.Appium;
class Program
{
  static void Main(string[] args)
  {

    // Add caps here
    RemoteWebDriver driver = new RemoteWebDriver(
      new Uri("https://hub-cloud.browserstack.com/wd/hub"),capabilities);
​
    // take a snapshot
    PercyOnAutomate Percy = new PercyOnAutomate(driver);

    // navigate to webpage
    driver.Navigate().GoToUrl("https://www.percy.io");

    Percy.Screenshot("dotnet screenshot-1");

    // quit driver
    driver.quit();
  }
}

• driver (required) - A appium driver instance
• name (required) - The screenshot name; must be unique to each screenshot
• options (optional) - There are various options supported by percy_screenshot to server further functionality.
  • sync - Boolean value by default it falls back to false, Gives the processed result around screenshot [From CLI v1.28.0-beta.0+].
  • freezeAnimatedImage - Boolean value by default it falls back to false, you can pass true and percy will freeze image based animations.
  • freezeImageBySelectors - List of selectors. Images will be freezed which are passed using selectors. For this to work freezeAnimatedImage must be set to true.
  • freezeImageByXpaths - List of xpaths. Images will be freezed which are passed using xpaths. For this to work freezeAnimatedImage must be set to true.
  • percyCSS - Custom CSS to be added to DOM before the screenshot being taken. Note: This gets removed once the screenshot is taken.
  • ignoreRegionXpaths - List of xpaths. elements in the DOM can be ignored using xpath
  • ignoreRegionSelectors - List of selectors. elements in the DOM can be ignored using selectors.
  • ignoreRegionAppiumElements - List of appium web-element. elements can be ignored using appium_elements.
  • customIgnoreRegions - List of custom objects. elements can be ignored using custom boundaries. Just passing a simple object for it like below.
    • Refer to example -

      • List<object> ignoreCustomElement = new List<object>();
        var region1 = new Dictionary<string, int>();
        region1.Add("top", 10);
        region1.Add("bottom", 120);
        region1.Add("right", 10);
        region1.Add("left", 10);
        ignoreCustomElement.Add(region1);
        region1.Add("custom_ignore_regions", ignoreCustomElement);
        

  • considerRegionXpaths - List of xpaths. elements in the DOM can be considered for diffing and will be ignored by Intelli Ignore using xpaths.
  • considerRegionSelectors - List of selectors. elements in the DOM can be considered for diffing and will be ignored by Intelli Ignore using selectors.
  • considerRegionAppiumElements - List of appium web-element. elements can be considered for diffing and will be ignored by Intelli Ignore using appium_elements.
  • customConsiderRegions - List of custom objects. elements can be considered for diffing and will be ignored by Intelli Ignore using custom boundaries
    • Refer to example -

      • List<object> considerCustomElement = new List<object>();
        var region2 = new Dictionary<string, int>();
        region2.Add("top", 10);
        region2.Add("bottom", 120);
        region2.Add("right", 10);
        region2.Add("left", 10);
        considerCustomElement.Add(region2);
        region2.Add("custom_consider_regions", considerCustomElement);
        

      • Parameters:
        • top (int): Top coordinate of the consider region.
        • bottom (int): Bottom coordinate of the consider region.
        • left (int): Left coordinate of the consider region.
        • right (int): Right coordinate of the consider region.

Creating Percy on automate build

Note: Automate Percy Token starts with auto keyword. The command can be triggered using exec keyword.

$ export PERCY_TOKEN=[your-project-token]
$ percy exec -- [python test command]
[percy] Percy has started!
[percy] [Python example] : Starting automate screenshot ...
[percy] Screenshot taken "Python example"
[percy] Stopping percy...
[percy] Finalized build #1: https://percy.io/[your-project]
[percy] Done!

Refer to docs here: Percy on Automate