CI: migrate from Bors to GitHub Merge Queue; also, refactor some code, and add some more unit tests

.github/workflows/ci_integration.yml

@@ -6,35 +6,28 @@ name: CI (integration tests)
 # GitHub's abuse rate limits.
 
 on:
+  merge_group: # GitHub merge queue
+  pull_request: # but we will skip the integration tests on PR builds, to avoid hitting rate limits
   push:
     branches:
       - master
-      - staging
-      - trying
 concurrency:
   group: integration-tests-global-lock
   cancel-in-progress: false
 jobs:
   integration:
-    if: github.event_name == 'push'
-    name: Integration/Julia ${{ matrix.version }}/${{ matrix.os }}/${{ matrix.arch }}
-    runs-on: ${{ matrix.os }}
-    strategy:
-      max-parallel: 1
-      fail-fast: true
-      matrix:
-        arch:
-          - x64
-        os:
-          - ubuntu-latest
-        version:
-          - '1'
+    # We don't actually want to run integration tests on pull requests,
+    # because we want to avoid hitting rate limits.
+    # So, if this is a PR build, mark the integration tests as "skipped".
+    if: github.event_name != 'pull_request'
+    name: Integration
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
-          version: ${{ matrix.version }}
-          arch: ${{ matrix.arch }}
+          version: '1'
+          arch: x64
       - uses: actions/cache@v3
         env:
           cache-name: cache-artifacts

.github/workflows/ci_unit.yml

@@ -1,11 +1,10 @@
 name: CI (unit tests)
 on:
+  merge_group: # GitHub merge queue
   pull_request:
   push:
     branches:
       - master
-      - staging
-      - trying
     tags: '*'
   workflow_dispatch:
 jobs:
@@ -44,6 +43,11 @@ jobs:
       - uses: julia-actions/julia-runtest@v1
         env:
           COMPATHELPER_RUN_INTEGRATION_TESTS: "false"
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v3
+        with:
+          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
   documentation:
     name: Documentation
     runs-on: ubuntu-latest

Project.toml

@@ -17,15 +17,18 @@ TimeZones = "f269a46b-ccf7-5d73-abea-4c690281aa53"
 UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 
 [compat]
+Aqua = "0.8"
 Base64 = "1"
 Dates = "1"
 GitForge = "0.4"
 Mocking = "0.7"
 MultilineStrings = "0.1"
 Pkg = "1"
+Random = "<0.0.1, 1"
 RegistryInstances = "0.1"
 SHA = "0.7, 1"
 TOML = "1"
+Test = "<0.0.1, 1"
 TimeZones = "1"
 UUIDs = "1"
 julia = "1.6"

codecov.yml

@@ -4,4 +4,10 @@ coverage:
       default:
         target: auto
       minimum:
-        target: "100%"
+        # We want to enforce 100%.
+        # The Unit Tests + Integration Tests hit 100%.
+        # But the Unit Tests alone only hit 99.49%.
+        # And so, because of GitHub Merge Queue limitations,
+        # we need to set this threshold to 99%.
+        # target: "100%"
+        target: "99%"

src/dependencies.jl

@@ -109,3 +109,13 @@ function get_latest_version_from_registries!(
 
     return deps
 end
+
+function populate_dep_versions_from_reg!(deps; options)
+    if options.use_existing_registries
+        get_existing_registries!(deps, options.depot; options)
+    else
+        get_latest_version_from_registries!(deps, options.registries; options)
+    end
+
+    return nothing
+end

src/main.jl

@@ -53,11 +53,7 @@ function main(
         project_file = @mock joinpath(local_clone_path, subdir, "Project.toml")
         deps = get_project_deps(project_file; include_jll=options.include_jll)
 
-        if options.use_existing_registries
-            get_existing_registries!(deps, options.depot; options)
-        else
-            get_latest_version_from_registries!(deps, options.registries; options)
-        end
+        populate_dep_versions_from_reg!(deps; options)
 
         for dep in deps
             pr = @mock make_pr_for_new_version(

test/dependencies.jl

@@ -119,3 +119,35 @@ end
         end
     end
 end
+
+@testset "populate_dep_versions_from_reg!" begin
+    # For this test, we will just use CompatHelper's own `Project.toml` file.
+    project_file = joinpath(pkgdir(CompatHelper), "Project.toml")
+
+    # Just for this test, we hardcode this list
+    unregistered_stdlibs = [
+        "Base64",
+        "Dates",
+        "Pkg",
+        "UUIDs",
+    ]
+
+    @test ispath(project_file)
+    @test isfile(project_file)
+    for use_existing_registries in [true, false]
+        options = CompatHelper.Options(;
+            use_existing_registries,
+        )
+        deps = CompatHelper.get_project_deps(project_file)
+        for dep in deps
+            @test dep.latest_version === nothing
+        end
+        CompatHelper.populate_dep_versions_from_reg!(deps; options)
+        for dep in deps
+            if !(dep.package.name in unregistered_stdlibs)
+                @test dep.latest_version isa VersionNumber
+                @test dep.latest_version > v"0"
+            end
+        end
+    end
+end