CI: Add a CI job that runs JET tests

Author: DilumAluthge

.github/workflows/ci.yml

@@ -70,3 +70,17 @@ jobs:
           julia --project=docs --color=yes docs/make.jl pdf
         env:
           DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
+
+  jet:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: julia-actions/setup-julia@latest
+        with:
+          version: '1.12'
+          # version: 'nightly'
+      - name: Edit Distributed UUID
+        run: |
+          julia --color=yes -e 'write("Project.toml", replace(read("Project.toml", String), r"uuid = .*?\n" =>"uuid = \"47e2e46d-f89d-539d-b4ee-838fcccc9c8e\"\n"));'
+      - name:
+        run: julia --color=yes --project=ci/jet ci/jet/check.jl

Project.toml

@@ -1,5 +1,5 @@
 name = "Distributed"
-uuid = "8ba89e20-285c-5b6f-9357-94700520ee1b"
+uuid = "47e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 version = "1.11.0"
 
 [deps]

ci/jet/Project.toml

@@ -0,0 +1,12 @@
+[deps]
+Distributed = "47e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+Example = "7876af07-990d-54b4-ab0e-23690620f79a"
+JET = "c3a54625-cd67-489e-a8e7-0a5a0ff4e31b"
+Serialization = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[sources]
+Distributed = {path = "../.."}
+
+[compat]
+JET = "0.11"

ci/jet/check.jl

@@ -0,0 +1,20 @@
+using Distributed: Distributed
+
+using JET: JET
+using Serialization: Serialization
+using Test: Test, @testset
+
+# We don't want to fail PkgEval because of a JET failure
+# Therefore, we don't put the JET tests in the regular Distributed test suite
+# Instead, we put it in a separate CI job, which runs on the Distributed repo
+
+@testset "JET" begin
+    ignored_modules = (
+        # We will ignore Base:
+        Base,
+
+        # We'll ignore the Serialization stdlib:
+        Serialization,
+    )
+    JET.test_package(Distributed; ignored_modules)
+end