Appium Image comparision support

Support
1

Hi All,
Is there a way by which we can compare images in a native app using Appium ?

2

Appium Directly don’t provide any file/Image comparison, but you can use below code to compare images

File f = new File("C:/share/srikanthAutomation/ActualOutput/ImageAtRunTime.png");
    File f1 = new File("C:/share/srikanthAutomation/ExpectedOutput/ImageAlreadySaved.png");
    try {
        System.out.println(FileUtils.contentEquals(f, f1));
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
3

Thanks Srikanth for the prompt response
The code snippet you provided would compare entire screen

In my case I was to check if a particular icon/image is displayed on the screen or not
please suggest if any method can be used to achieve the same

5

@shavish, Appium do not support page comparison, you can capture screenshot using appium automation but to test screen you can use other tools like sikuli,applitools,imagemagick etc.

6

FYI, those interested in this may want to follow this issue: https://github.com/appium/appium/issues/943. It would be, in a way, a way to validate image on screen by treating it as an Appium “element”.

7

The Best way is to Take a Screen Shot and compare the Screen shots…
Try this
File scrOne = driver.getScreenshotAs(OutputType.FILE);
BufferedImage imgOne = ImageIO.read(scrOne);
File scrTwo = driver.getScreenshotAs(OutputType.FILE);
BufferedImage imgtwo = ImageIO.read(scrTwo);
DataBuffer dafileInput = imgOne.getData().getDataBuffer();
int sizefileInput = dafileInput.getSize();
DataBuffer dafileOutPut = imgtwo.getData().getDataBuffer();
int sizefileOutPut = dafileOutPut.getSize();
Boolean matchFlag = true;
if (sizefileInput == sizefileOutPut) {
for (int j = 0; j < sizefileInput; j++) {
if (dafileInput.getElem(j) != dafileOutPut.getElem(j)) {
matchFlag = false;
break;
}
}
}
System.out.println(matchFlag);
return matchFlag;
Returs a True Value for same image

8

Hi @shavish, as @Priyank_Shah has said, you could capture screenshots with Appium and compare them with other tools.
I’m using this approach in https://github.com/Telefonica/toolium to integrate screenshots assertions in Appium tests, using needle and pillow libraries. It allows to compare full screnshots or a single element with previous saved screenshots, e.g.:

element = self.driver.find_element_by_id('element_id')
self.assertScreenshot(element, 'custom_screenshot_name')

You have more info about visual asserts methods in http://toolium.readthedocs.org/en/latest/visual_testing.html

It’s a python solution, but the implementation would be similar in other languages.