Removes below 6.0 test_helper dead code and add a gemfile with ActiveRecord 7.0 for CI tests

Author: CharlesDelannoy

.github/workflows/continuous-integration-workflow.yml

@@ -66,6 +66,8 @@ jobs:
             gemfile: gemfiles/without_strong_migrations.gemfile
           - ruby: "3.0"
             gemfile: gemfiles/activerecord61.gemfile
+          - ruby: "3.0"
+            gemfile: gemfiles/activerecord70.gemfile
     env:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
     services:

gemfiles/activerecord70.gemfile

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gemspec path: '..'
+
+gem 'activerecord', '~> 7.0.0'
+gem 'bundler'
+gem 'minitest', '>= 5'
+gem 'mocha'
+gem 'pg', '~> 1.4.3'
+gem 'pry'
+gem 'pry-coolline'
+gem 'rake'
+gem 'rubocop'

test/test_helper.rb

@@ -63,10 +63,8 @@ def run_migration(direction = :up)
     migrator =
       if Gem::Requirement.new('>=7.1.0').satisfied_by?(Gem::Version.new(::ActiveRecord::VERSION::STRING))
         ActiveRecord::Migrator.new(direction, [@migration], @schema_migration, @internal_metadata)
-      elsif Gem::Requirement.new('>=6.0.0').satisfied_by?(Gem::Version.new(::ActiveRecord::VERSION::STRING))
-        ActiveRecord::Migrator.new(direction, [@migration], @schema_migration)
       else
-        ActiveRecord::Migrator.new(direction, [@migration])
+        ActiveRecord::Migrator.new(direction, [@migration], @schema_migration)
       end
     migrator.migrate
   end