Configure CI to test with _oldest_ compatible dependencies on min Julia

We want to ensure that compatibility specifications are not accidentally
violated by changes, so always test against what is declared to be the
earliest compatible versions at least once.

Author: jmert

.github/workflows/CI.yml

@@ -26,6 +26,7 @@ jobs:
       matrix:
         version:
           - 'min'     # earliest supported
+          - '1.9'     # earliest with pkg extensions
           - '1'       # latest release
           - 'pre'
         os:
@@ -39,13 +40,15 @@ jobs:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
       - uses: julia-actions/cache@v2
+      - uses: julia-actions/julia-downgrade-compat@v1
+        if: ${{ contains(fromJSON('["min", "1.9"]'), matrix.version) }}
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          file: lcov.info
+          files: lcov.info
   docs:
     name: Documentation
     runs-on: ubuntu-latest

Project.toml

@@ -20,10 +20,14 @@ KDEMakieExt = ["Makie"]
 KDEUnicodePlotsExt = ["UnicodePlots"]
 
 [compat]
-Makie = "0.15 - 0.24"
+Distributions = "0.25.46"
+FFTW = "1.4"
+Makie = "0.15,0.16,0.17,0.18,0.19,0.20,0.21,0.22,0.23,0.24"
+PrecompileTools = "1.1"
 UnicodePlots = "3"
 julia = "1.6"
 
 [extras]
+Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
 Makie = "ee78f7c6-11fb-53f2-987a-cfe4a2b5a57a"
 UnicodePlots = "b8865327-cd53-5732-bb35-84acbb429228"

test/extensions.jl

@@ -38,16 +38,17 @@ end
 
 @testset "Makie" begin
     using CairoMakie
+    using .Makie: plotfunc
     using Unitful
 
     rv = rand(1000)
     K = kde(rv, lo = 0.0, hi = 1.0, boundary = :closed)
 
     # simply test that invocation is not an error
-    @test plot(K).plot isa Plot{lines}
-    @test lines(K).plot isa Plot{lines}
-    @test scatter(K).plot isa Plot{scatter}
-    @test stairs(K).plot isa Plot{stairs}
+    @test plotfunc(plot(K).plot) === lines
+    @test plotfunc(lines(K).plot) === lines
+    @test plotfunc(scatter(K).plot) === scatter
+    @test plotfunc(stairs(K).plot) === stairs
 
     # stairs has special behavior; check that the converted data correctly closes the
     # histogram
@@ -57,10 +58,13 @@ end
     @test y[end] ≈ [1.0, 0.0] atol=eps()
     @test y[end][1] == y[end-1][1]
 
-    # check that unitful KDEs plot as well
-    Ku = kde(rv .* 1u"m", lo = 0.0, hi = 1.0, boundary = :closed)
-    @test plot(Ku).plot isa Plot{lines}
-    @test stairs(Ku).plot isa Plot{stairs}
+    # unitful handling was added in Makie v0.21
+    if isdefined(Makie, :UnitfulConversion)
+        # check that unitful KDEs plot as well
+        Ku = kde(rv .* 1u"m", lo = 0.0, hi = 1.0, boundary = :closed)
+        @test plot(Ku).plot isa Plot{lines}
+        @test stairs(Ku).plot isa Plot{stairs}
+    end
 end
 
 @testset "UnicodePlots" begin