chore: Add Ruby 4.0 to CI

.github/workflows/ci.yml

@@ -34,7 +34,10 @@ jobs:
             ruby: "3.4"
             flags: "--test --cucumber"
           - os: ubuntu-latest
-            ruby: "3.4"
+            ruby: "4.0"
+            flags: "--test --cucumber"
+          - os: ubuntu-latest
+            ruby: "4.0"
             flags: "--rubocop --yard --build"
           - os: ubuntu-latest
             ruby: jruby
@@ -44,10 +47,10 @@ jobs:
           #   ruby: truffleruby
           #   flags: "--test --cucumber"
           - os: macos-latest
-            ruby: "3.4"
+            ruby: "4.0"
             flags: "--test --cucumber"
           - os: windows-latest
-            ruby: "3.4"
+            ruby: "4.0"
             flags: "--test --cucumber"
       fail-fast: false
     runs-on: ${{ matrix.os }}
@@ -57,7 +60,7 @@ jobs:
         with:
           ruby-version: ${{ matrix.ruby }}
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install dependencies
         shell: bash
         run: "bundle install && gem install --no-document toys"

.github/workflows/release-hook-on-closed.yml

@@ -12,16 +12,14 @@ permissions:
 jobs:
   release-process-request:
     if: ${{ github.repository == 'cloudevents/sdk-ruby' }}
-    env:
-      ruby_version: "3.4"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install Toys
         run: "gem install --no-document toys"
       - name: Process release request

.github/workflows/release-hook-on-push.yml

@@ -12,16 +12,14 @@ permissions:
 jobs:
   release-update-open-requests:
     if: ${{ github.repository == 'cloudevents/sdk-ruby' }}
-    env:
-      ruby_version: "3.4"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install Toys
         run: "gem install --no-document toys"
       - name: Update open releases

.github/workflows/release-perform.yml

@@ -22,16 +22,14 @@ permissions:
 jobs:
   release-perform:
     if: ${{ github.repository == 'cloudevents/sdk-ruby' }}
-    env:
-      ruby_version: "3.4"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install Toys
         run: "gem install --no-document toys"
       - name: Perform release

.github/workflows/release-request.yml

@@ -15,16 +15,14 @@ permissions:
 jobs:
   release-request:
     if: ${{ github.repository == 'cloudevents/sdk-ruby' }}
-    env:
-      ruby_version: "3.4"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install Toys
         run: "gem install --no-document toys"
       - name: Open release pull request

.github/workflows/release-retry.yml

@@ -19,16 +19,14 @@ permissions:
 jobs:
   release-retry:
     if: ${{ github.repository == 'cloudevents/sdk-ruby' }}
-    env:
-      ruby_version: "3.4"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Install Toys
         run: "gem install --no-document toys"
       - name: Retry release

.rubocop.yml

@@ -261,6 +261,8 @@ Style/MethodCallWithArgsParentheses:
   Enabled: true
 Style/MinMaxComparison:
   Enabled: true
+Style/ModuleMemberExistenceCheck:
+  Enabled: true
 Style/MultilineInPatternThen:
   Enabled: true
 Style/NegatedIfElseCondition:

.toys/.toys.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-toys_version! ">= 0.17"
+toys_version! ">= 0.19"
 
 expand :clean, paths: :gitignore
 
@@ -19,4 +19,4 @@
 
 expand :gem_build, name: "install", install_gem: true
 
-load_gem "toys-release", version: "~> 0.2", as: "release"
+load_gem "toys-release", version: "~> 0.4", as: "release"

.toys/ci.rb

@@ -9,7 +9,7 @@
 expand("toys-ci") do |toys_ci|
   toys_ci.only_flag = true
   toys_ci.fail_fast_flag = true
-  toys_ci.job("Bundle update", flag: :bundle, exec: ["bundle", "update"])
+  toys_ci.job("Bundle update", flag: :bundle, exec: ["bundle", "update", "--all"])
   toys_ci.job("Rubocop", flag: :rubocop, tool: ["rubocop"])
   toys_ci.job("Tests", flag: :test, tool: ["test"])
   toys_ci.job("Cucumber", flag: :cucumber, tool: ["cucumber"])

Gemfile

@@ -4,13 +4,17 @@ source "https://rubygems.org"
 gemspec
 
 gem "cucumber", "~> 9.2"
-gem "logger", "~> 1.4"
-gem "minitest", "~> 5.25"
+gem "minitest", ">= 5.26", "< 7"
 gem "minitest-focus", "~> 1.4"
 gem "minitest-rg", "~> 5.3"
 gem "rack", "~> 3.2"
 gem "redcarpet", "~> 3.6" unless ::RUBY_PLATFORM == "java"
-gem "rubocop", "~> 1.81"
-gem "toys-core", "~> 0.17"
+gem "rubocop", "~> 1.82"
+gem "toys-core", "~> 0.19"
 gem "webrick", "~> 1.9"
-gem "yard", "~> 0.9.37"
+# win32ole is required transitively by cucumber via sys-uname, and not declared
+# as a dependency as of sys-uname 1.4.1. But it is no longer a default gem as
+# of Ruby 4.0, and so must be included explicitly in the Gemfile for now. This
+# can be removed once sys-uname gets fixed.
+gem "win32ole", "~> 1.9" if ::RbConfig::CONFIG["host_os"] =~ /mswin|msys|mingw|cygwin|bccwin|wince|emc/
+gem "yard", "~> 0.9.38"