Introduce appraisals gem

Problem: Nowadays, tzu is only tested agains rails 4. We must automate
the tests against all the versions above 4.

Solution: Introduce appraisals gem to automate the tests agains
different versions of Rails

.github/workflows/main.yml

@@ -1,3 +1,4 @@
+---
 name: Ruby
 
 on:
@@ -10,27 +11,28 @@ jobs:
     runs-on: ubuntu-latest
     name: Lint
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Ruby
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: "3.2.2"
-        bundler-cache: true
-    - name: Linter
-      run: bundle exec rake standard
+      - uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.2.2"
+          bundler-cache: true
+      - name: Linter
+        run: bundle exec rake standard
   test:
     runs-on: ubuntu-latest
     name: Ruby ${{ matrix.ruby }}
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '2.7', '3.0', '3.1', '3.2', '3.3' ]
+        ruby: ['2.7', '3.0', '3.1', '3.2', '3.3']
+        rails: ['4', '5', '6', '7']
     steps:
-    - uses: actions/checkout@v4
-    - name: Set up Ruby
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: ${{ matrix.ruby }}
-        bundler-cache: true
-    - name: Run specs
-      run: bundle exec rake
+      - uses: actions/checkout@v4
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - name: Run specs
+        run: bundle exec appraisal rails-${{ matrix.rails }} rake

Appraisals

@@ -0,0 +1,15 @@
+appraise "rails-4" do
+  gem "activemodel", "4.2.11.3"
+end
+
+appraise "rails-5" do
+  gem "activemodel", "5.2.8.1"
+end
+
+appraise "rails-6" do
+  gem "activemodel", "~> 6.1"
+end
+
+appraise "rails-7" do
+  gem "activemodel", "~> 7.1"
+end

Gemfile

@@ -2,7 +2,7 @@ source "http://rubygems.org"
 
 gemspec
 
-gem "activemodel", "4.2.11.3"
+gem "activemodel"
 gem "debug"
 gem "irb"
 gem "rake"
@@ -11,3 +11,5 @@ gem "rubocop-rspec"
 gem "rubocop-rake"
 gem "standard"
 gem "virtus"
+
+gem "appraisal", "~> 2.5"

Gemfile.lock

@@ -15,6 +15,10 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
+    appraisal (2.5.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
     ast (2.4.2)
     axiom-types (0.1.1)
       descendants_tracker (~> 0.0.4)
@@ -109,6 +113,7 @@ GEM
       lint_roller (~> 1.1)
       rubocop-performance (~> 1.20.1)
     stringio (3.1.0)
+    thor (1.3.0)
     thread_safe (0.3.6)
     tzinfo (1.2.11)
       thread_safe (~> 0.1)
@@ -122,7 +127,8 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  activemodel (= 4.2.11.3)
+  activemodel
+  appraisal (~> 2.5)
   debug
   irb
   rake

gemfiles/rails_4.gemfile

@@ -0,0 +1,16 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "activemodel", "4.2.11.3"
+gem "debug"
+gem "irb"
+gem "rake"
+gem "rspec"
+gem "rubocop-rspec"
+gem "rubocop-rake"
+gem "standard"
+gem "virtus"
+gem "appraisal", "~> 2.5"
+
+gemspec path: "../"

gemfiles/rails_4.gemfile.lock

@@ -0,0 +1,143 @@
+PATH
+  remote: ..
+  specs:
+    tzu (1.0.0)
+      activesupport
+
+GEM
+  remote: http://rubygems.org/
+  specs:
+    activemodel (4.2.11.3)
+      activesupport (= 4.2.11.3)
+      builder (~> 3.1)
+    activesupport (4.2.11.3)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    appraisal (2.5.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    ast (2.4.2)
+    axiom-types (0.1.1)
+      descendants_tracker (~> 0.0.4)
+      ice_nine (~> 0.11.0)
+      thread_safe (~> 0.3, >= 0.3.1)
+    builder (3.2.4)
+    coercible (1.0.0)
+      descendants_tracker (~> 0.0.1)
+    concurrent-ruby (1.2.2)
+    debug (1.9.1)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
+    descendants_tracker (0.0.4)
+      thread_safe (~> 0.3, >= 0.3.1)
+    diff-lcs (1.5.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    ice_nine (0.11.2)
+    io-console (0.7.1)
+    irb (1.11.0)
+      rdoc
+      reline (>= 0.3.8)
+    json (2.7.1)
+    language_server-protocol (3.17.0.3)
+    lint_roller (1.1.0)
+    minitest (5.20.0)
+    parallel (1.24.0)
+    parser (3.2.2.4)
+      ast (~> 2.4.1)
+      racc
+    psych (5.1.2)
+      stringio
+    racc (1.7.3)
+    rainbow (3.1.1)
+    rake (13.1.0)
+    rdoc (6.6.2)
+      psych (>= 4.0.0)
+    regexp_parser (2.8.3)
+    reline (0.4.1)
+      io-console (~> 0.5)
+    rexml (3.2.6)
+    rspec (3.12.0)
+      rspec-core (~> 3.12.0)
+      rspec-expectations (~> 3.12.0)
+      rspec-mocks (~> 3.12.0)
+    rspec-core (3.12.2)
+      rspec-support (~> 3.12.0)
+    rspec-expectations (3.12.3)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.12.0)
+    rspec-mocks (3.12.6)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.12.0)
+    rspec-support (3.12.1)
+    rubocop (1.59.0)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.2.2.4)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.30.0)
+      parser (>= 3.2.1.0)
+    rubocop-capybara (2.20.0)
+      rubocop (~> 1.41)
+    rubocop-factory_bot (2.25.0)
+      rubocop (~> 1.33)
+    rubocop-performance (1.20.1)
+      rubocop (>= 1.48.1, < 2.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+    rubocop-rake (0.6.0)
+      rubocop (~> 1.0)
+    rubocop-rspec (2.26.0)
+      rubocop (~> 1.40)
+      rubocop-capybara (~> 2.17)
+      rubocop-factory_bot (~> 2.22)
+    ruby-progressbar (1.13.0)
+    standard (1.33.0)
+      language_server-protocol (~> 3.17.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.59.0)
+      standard-custom (~> 1.0.0)
+      standard-performance (~> 1.3)
+    standard-custom (1.0.2)
+      lint_roller (~> 1.0)
+      rubocop (~> 1.50)
+    standard-performance (1.3.0)
+      lint_roller (~> 1.1)
+      rubocop-performance (~> 1.20.1)
+    stringio (3.1.0)
+    thor (1.3.0)
+    thread_safe (0.3.6)
+    tzinfo (1.2.11)
+      thread_safe (~> 0.1)
+    unicode-display_width (2.5.0)
+    virtus (2.0.0)
+      axiom-types (~> 0.1)
+      coercible (~> 1.0)
+      descendants_tracker (~> 0.0, >= 0.0.3)
+
+PLATFORMS
+  arm64-darwin-22
+
+DEPENDENCIES
+  activemodel (= 4.2.11.3)
+  appraisal (~> 2.5)
+  debug
+  irb
+  rake
+  rspec
+  rubocop-rake
+  rubocop-rspec
+  standard
+  tzu!
+  virtus
+
+BUNDLED WITH
+   2.4.22

gemfiles/rails_5.gemfile

@@ -0,0 +1,16 @@
+# This file was generated by Appraisal
+
+source "http://rubygems.org"
+
+gem "activemodel", "5.2.8.1"
+gem "debug"
+gem "irb"
+gem "rake"
+gem "rspec"
+gem "rubocop-rspec"
+gem "rubocop-rake"
+gem "standard"
+gem "virtus"
+gem "appraisal", "~> 2.5"
+
+gemspec path: "../"