Refactor visual tests (#214)

* Refactor visual tests

* Update axis aspect

Author: eliascarv

test/Project.toml

@@ -1,13 +1,12 @@
 [deps]
+CairoMakie = "13f3f980-e62b-5c42-98c6-ff1f3baf88f0"
 CategoricalArrays = "324d7699-5711-5eae-9e2f-1d82baa6b597"
 ColumnSelectors = "9cc86067-7e36-4c61-b350-1ac9833d277f"
 DataScienceTraits = "6cb2f572-2d2b-4ba6-bdb3-e710fa044d6c"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
-GR = "28b8d3ca-fb5f-59d9-8090-bfdbd6d07a71"
 ImageIO = "82e4d734-157c-48bb-816b-45c225c6df19"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 PairPlots = "43a3c2be-4208-490b-832a-a21dcd55d7da"
-Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 ReferenceTests = "324d217c-45ce-50fc-942e-d289b448e8cf"
 Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
@@ -18,6 +17,5 @@ TypedTables = "9d95f2ec-7b3d-5a63-8d20-e2491e220bb9"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
 [compat]
-GR = "=0.72.7"
-PairPlots = "=0.6.0"
-Plots = "=1.38.16"
+CairoMakie = "0.10"
+PairPlots = "1.1"

test/data/center.png

@@ -1,26 +1,26 @@
 using TableTransforms
-using Distributions
 using Tables
 using Unitful
 using TypedTables
 using CategoricalArrays
 using LinearAlgebra
-using Statistics
-using Test, Random, Plots
-using ReferenceTests, ImageIO
+using Distributions
 using StatsBase
+using Statistics
+using ReferenceTests
 using PairPlots
+using ImageIO
+using Random
+using Test
 
+import CairoMakie as Mke
 import ColumnSelectors as CS
 import DataScienceTraits as DST
 
 const TT = TableTransforms
 
 # set default configurations for plots
-gr(ms=1, mc=:black, label=false, size=(600, 400))
-
-# workaround GR warnings
-ENV["GKSwstype"] = "100"
+Mke.activate!(type = "png")
 
 # environment settings
 isCI = "CI" ∈ keys(ENV)