This AutoHotKey script facilitates comparing Resharper tests results where one-liner JSON are compared by copy-pasting them, formatting them and comparing them in Notepad++ with the Compare plugin.

compareResharperJsonTests.ahk

; Copy Paste Resharper tests one-liner JSON exptected vs actual output and compare them in Notepad++
; Use by first copying ALL test output in the clipboard, and then press CTRL-ALT-WIN-C
^#!c::
	; Start Notepad++
	ProgramFilesX86 := A_ProgramFiles . (A_PtrSize=8 ? " (x86)" : "")
	Run %ProgramFilesX86%\Notepad++\notepad++.exe -multiInst -nosession
	WinWaitActive, new 1 - Notepad++, , 1
	Send ^!d
	Sleep, 100
	; Paste in new document
	Send ^n
	Sleep, 100
	Send ^v
	; Delete extra stuff
	Send ^{Home}
	Send {Down}{Down}
	Send ^+{End}
	Send {Del}
	Send !+{Right 13}!+{Up 2}
	Send {Del}
	Send {End}{Backspace}
	Send {Down}{End}{Backspace}
	; Extract JSON to compare
	Send {Home}
	Send +{End}
	Send ^x
	; Format first JSON
	Send ^a
	Send ^!+m
	Sleep, 100
	Send ^{Home}
	Send Expected
	; Paste second JSON and format
	Send ^n
	Sleep, 100
	Send ^v
	Send ^a
	Send ^!+m
	Sleep, 100
	Send ^{Home}
	Send Actual
	; Compare JSON
	Send !d

To solve an issue where starting a comparison while a notepad++ instance is already open, this fork will always start a new no-session instance of notepad++: https://gist.github.com/christianrondeau/6353811

Thanks for merging! I deleted my fork.