Doublequote Ruby 3.0 and add Ruby 3.1 to testing matrix

.github/workflows/test.yml

@@ -34,16 +34,16 @@ jobs:
     timeout-minutes: 15
     strategy:
       matrix:
-        ruby: [2.5, 2.6, 2.7, 3.0, jruby-9.2, jruby-9.3]
+        ruby: [2.5, 2.6, 2.7, "3.0", 3.1, jruby-9.2, jruby-9.3]
         pg: [14]
         include:
-          - ruby: 3.0
+          - ruby: "3.0"
             pg: 10
-          - ruby: 3.0
+          - ruby: "3.0"
             pg: 11
-          - ruby: 3.0
+          - ruby: "3.0"
             pg: 12
-          - ruby: 3.0
+          - ruby: "3.0"
             pg: 13
           - ruby: jruby-9.3
             pg: 10

Appraisals

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 ruby_2 = Gem::Version.new(RUBY_VERSION) < Gem::Version.new('3')
 ruby_27_or_higher = Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.7')
+ruby_31 = Gem::Version.new(RUBY_VERSION) == Gem::Version.new('3.1')
 jruby = RUBY_PLATFORM.include?('java')
 
 if ruby_2
@@ -18,16 +19,19 @@ appraise "rails-6.1" do
 end
 
 if ruby_27_or_higher && !jruby
-  # Rails HEAD requires MRI 2.7+
+  # Rails 7+ requires MRI 2.7+
   # activerecord-jdbcpostgresql-adapter does not have a compatible version
 
-  appraise "rails-7.0" do
-    gem "rails", "~> 7.0.0"
-    gem "selenium-webdriver", "~> 4.0" # https://github.com/rails/rails/pull/43498
+  # Rails 7.0.0 is incompatible with Ruby 3.1
+  # https://gist.github.com/yahonda/2776d8d7b6ea7045359f38c10449937b
+  unless ruby_31
+    appraise "rails-7.0" do
+      gem "rails", "~> 7.0.0"
+      gem "selenium-webdriver", "~> 4.0" # https://github.com/rails/rails/pull/43498
+    end
   end
 
-  # https://github.com/rails/rails/issues/43422
-  # appraise "rails-head" do
-  #   gem "rails", github: "rails/rails", branch: "main"
-  # end
+  appraise "rails-head" do
+    gem "rails", github: "rails/rails", branch: "main"
+  end
 end