soffes/README.md

## README.md

      
    Raw
  

              README.md
            
          
    Apparently, SnapshotTesting has this built-in. 🤦

While working with snapshot tests, it can be hard to debug what the problem is. This script allows you to quickly open the diff in a visual tool, Kaleidoscope, to compare the visual changes.
The output of SnapshotTesting when a snapshot doesn’t match looks like this:
@−
"/Users/soffes/Code/github/mobile-ios/Modules/GitHub/Tests/__Snapshots__/Foo/bar.png"
@+
"/Users/soffes/Library/Developer/CoreSimulator/Devices/FFD3D70A-435B-4FC8-A30C-11B42ADE6584/data/Containers/Data/Application/E898D96B-B0BC-451F-92AC-C7E722E5B347/tmp/Foo/bar.png"
Run this script with ruby snapshot_diff.rb and paste in the diff from SnapshotTesting for it to open in Kaleidoscope. This requires that you have the ksdiff command line tool installed.
Enjoy.

  
## snapshot_diff.rb
puts "Paste diff:"

regex = /@−\n"(.*)"\n@\+\n"(.*)"/
all_text = ""
matches = nil

while all_text << STDIN.gets
  break if matches = all_text.match(regex)
end

`ksdiff #{matches[1]} #{matches[2]}`
	puts "Paste diff:"

	regex = /@−\n"(.)"\n@\+\n"(.)"/
	all_text = ""
	matches = nil

	while all_text << STDIN.gets
	break if matches = all_text.match(regex)
	end

	`ksdiff #{matches[1]} #{matches[2]}`