Automated visual testing of Android/iOS/Web applications.

Nakal is used to add visual validations in your existing test framework (using appium or selenium-webDriver etc).

Installation

You need to install imagemagick on your machine

Add this to your pom.xml

	<repositories>
		<repository>
		    <id>jitpack.io</id>
		    <url>https://jitpack.io</url>
		</repository>
	</repositories>
    
	<dependency>
	    <groupId>com.github.saikrishna321</groupId>
	    <artifactId>nakal_java</artifactId>
	    <version>f4dcb0054e</version>
	</dependency>

Usage

Environment Varaibles should hold

• PLATFORM=ios/android
• MASKIMAGE=image which needs to be considered for masking
• NAKAL_MODE=build/compare

For Example:

NakalExecutor nakalExecutor = new NakalExecutor();
     //Compare mobile native app screen
     @Test
     public void compareImagesExecutor(){
         Assert.assertTrue(nakalExecutor.nakalExecutorNativeCompare("HomeScreen"));
     }
     //Compare mobile-web/desktop-browser app screen
     @Test
     public void compareImagesExecutor(){
         Assert.assertTrue(nakalExecutor.nakalExecutorWebCompare(driver, "GoogleScreen"));
      }

1. Now, execute your test by passing env variable NAKAL_MODE=build to build the baseline images. All baseline images will be stored in baseline_images folder in current directory

2. Once baseline is built, next execution onwards, start using environment variable NAKAL_MODE=compare to compare against baseline. any difference will be put in the same directory with image file named "difference_current_screen_name.png"

All mask images should and be stored at /ios/mask-images/fileName.png /android/mask-images/fileName.png.(mask images with transparent background has been created using gimp tool- eg:https://github.com/saikrishna321/nakal_java/tree/master/android/mask_images) MASKIMAGE value in the env should be the same fileName which is stored under the mask_images(For ex: ./mask_images/nexus5.png and MASKIMAGE="nexus5").

#Running the tests

PLATFORM="android" NAKAL_MODE="build" MASKIMAGE="nexus5" mvn clean -Dtest=AndroidTest test (captures a baseline image)

PLATFORM="android" NAKAL_MODE="compare" MASKIMAGE="nexus5" mvn clean -Dtest=AndroidTest test ( compares expected and actual image)

Ignore certain regions of the image

1. Create nakal.yaml under the root directory.
2. You can specify the areas of a screen you want to mask/ignore while comparing in nakal.yaml as below

nexus5:
  HomeScreen: {mask_region_1: [69, 441, 357, 553],mask_region_2: [50, 1600, 371, 1652]}
  SearchScreen: {mask_region_1: [66,424,340,478],mask_region_2: [76,524,440,578]}

3.If you want to set certain threshold while comparing. You can pass option as:

nakalExecutor.nakalExecutorNativeCompare("HomeScreen",3)

Ruby Client

https://github.com/rajdeepv/nakal

Contributing

1. Fork it ( http://github.com//nakal_java/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request