diff --git a/test/integration_dates.jl b/test/integration_dates.jl
index 85ed3da6..b4598d4c 100644
--- a/test/integration_dates.jl
+++ b/test/integration_dates.jl
@@ -13,6 +13,7 @@ using Plots, Test, Dates
     ref_xlims = (x[1].instant.periods.value, x[end].instant.periods.value)
     @test Plots.ylims(p) == ref_ylims
     @test Plots.xlims(p) == ref_xlims
+    @test isa(display(p), Nothing) == true
 end # testset
 
 @testset "Date xlims" begin
@@ -21,6 +22,7 @@ end # testset
     span = (Date(2019,10,31), Date(2019,11,11))
 
     p = plot(x,y, xlims=span, widen = false)
+    @test isa(display(p), Nothing) == true
 end # testset
 
 @testset "DateTime xlims" begin
@@ -29,4 +31,5 @@ end # testset
     span = (DateTime(2019,10,31,11,59,59), DateTime(2019,11,11,12,01,15))
 
     p = plot(x,y, xlims=span, widen = false)
+    @test isa(display(p), Nothing) == true
 end # testset