enable image display using ImageShow

Project.toml

@@ -9,6 +9,8 @@ Distances = "b4f34e82-e78d-54a5-968a-f98e89d6e8f7"
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"
 ImageCore = "a09fc81d-aa75-5fe9-8630-4744c3626534"
 ImageInTerminal = "d8c32880-2388-543b-8c61-d9f865259254"
+ImageShow = "4e3cecfd-b093-5904-9786-8bbb286a6a31"
+MosaicViews = "e94cdb99-869f-56ef-bcf0-1ae2bcbe0389"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 SHA = "ea8e919c-243c-51af-8825-aaa63cd721ce"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
@@ -19,6 +21,8 @@ Distances = "0.7, 0.8"
 FileIO = "1"
 ImageCore = "0.8.1"
 ImageInTerminal = "0.3, 0.4"
+ImageShow = "0.2"
+MosaicViews = "0.2"
 julia = "1"
 
 [extras]

src/ReferenceTests.jl

@@ -8,6 +8,8 @@ using ImageInTerminal
 using SHA
 using DeepDiffs
 using Random
+using MosaicViews
+using ImageShow
 
 export
     @withcolor,

src/render.jl

@@ -24,13 +24,25 @@ end
 
 ## 2 arg form render for comparing
 function render(mode::BeforeAfter, reference, actual)
+    if displayable(MIME("image/png"))
+        render(MIME("image/png"), mode, reference, actual)
+    else
+        render(MIME("text/plain"), mode, reference, actual)
+    end
+end
+function render(::MIME"text/plain", mode::BeforeAfter, reference, actual)
     println("- REFERENCE -------------------")
     render_item(mode, reference)
     println("-------------------------------")
     println("- ACTUAL ----------------------")
     render_item(mode, actual)
     println("-------------------------------")
 end
+function render(::MIME"image/png", mode::BeforeAfterImage, reference, actual)
+    println("- REFERENCE --------|--------- ACTUAL -")
+    display(MIME("image/png"), mosaicview(reference, actual; nrow=1, npad=5))
+end
+
 function render(::Diff, reference, actual)
     println("- DIFF ------------------------")
     @withcolor println(deepdiff(reference, actual))
@@ -39,11 +51,16 @@ end
 
 ## 1 arg form render for new content
 function render(mode::RenderMode, actual)
-    println("- NEW CONTENT -----------------")
-    render_item(mode, actual)
-    println("-------------------------------")
+    if displayable(MIME("image/png"))
+        display(MIME("image/png"), actual)
+    else
+        println("- NEW CONTENT -----------------")
+        render_item(mode, actual)
+        println("-------------------------------")
+    end
 end
 
+
 """
     default_rendermode(::DataFormat, actual)