Better diff printing (#5)

Uses DeepDiffs package

Author: pfitzseb

Project.toml

@@ -4,6 +4,7 @@ author = ["Keno Fischer <[email protected]>"]
 version = "0.1.3"
 
 [deps]
+DeepDiffs = "ab62b9b5-e342-54a8-a765-a90f495de1a6"
 REPL = "3fa0cd96-eef1-5676-8a61-b3b8758bbffb"
 VT100 = "7774df62-37c0-5c21-b34d-f6d7f98f54bc"
 

src/TerminalRegressionTests.jl

@@ -1,5 +1,6 @@
 module TerminalRegressionTests
     using VT100
+    using DeepDiffs
     import REPL
 
     function load_outputs(file)
@@ -98,25 +99,19 @@ module TerminalRegressionTests
     REPL.Terminals.pipe_writer(t::EmulatedTerminal) = t.out_stream
 
     function _compare(output, outbuf)
-        result = outbuf == output
+        outstring = String(output)
+        bufstring = String(outbuf)
+        result = outstring == bufstring
         if !result
             println("Test failed. Expected result written to expected.out,
                 actual result written to failed.out")
             open("failed.out","w") do f
-                write(f,outbuf)
+                write(f,bufstring)
             end
             open("expected.out","w") do f
-                write(f,output)
-            end
-            for (i,c) in enumerate(output)
-                if c == Char(outbuf[i])
-                    print(Char(c))
-                elseif c == '\n'
-                    println()
-                else
-                    printstyled(stdout, "█", color=:red)
-                end
+                write(f,outstring)
             end
+            println(stdout, deepdiff(outstring, bufstring))
             error()
         end
         return result