Add tests for display methods

test/displays.jl

+using Test
+
+using KM3io
+using KM3NeTTestData
+
+const ONLINEFILE = datapath("online", "km3net_online.root")
+const OFFLINEFILE = datapath("offline", "km3net_offline.root")
+
+@testset "displays" begin
+    f = ROOTFile(OFFLINEFILE)
+    show(devnull, f.offline[1])  # Evt
+    show(devnull, f.offline[1:4])  # compact Evt
+    show(devnull, f.offline[1].trks)  # Trks
+    show(devnull, f.offline[1].trks[1:4])  # compact Trks
+end

test/runtests.jl

@@ -10,3 +10,4 @@ include("calibration.jl")
 include("physics.jl")
 include("math.jl")
 include("controlhost.jl")
+include("displays.jl")