Move db:migrate:status to DatabaseTasks method

activerecord/lib/active_record/railties/databases.rake

@@ -149,18 +149,7 @@ db_namespace = namespace :db do
 
     desc "Display status of migrations"
     task status: :load_config do
-      unless ActiveRecord::SchemaMigration.table_exists?
-        abort "Schema migrations table does not exist yet."
-      end
-
-      # output
-      puts "\ndatabase: #{ActiveRecord::Base.connection_config[:database]}\n\n"
-      puts "#{'Status'.center(8)}  #{'Migration ID'.ljust(14)}  Migration Name"
-      puts "-" * 50
-      ActiveRecord::Base.connection.migration_context.migrations_status.each do |status, version, name|
-        puts "#{status.center(8)}  #{version.ljust(14)}  #{name}"
-      end
-      puts
+      ActiveRecord::Tasks::DatabaseTasks.migrate_status
     end
   end
 

activerecord/lib/active_record/tasks/database_tasks.rb

@@ -197,6 +197,21 @@ module ActiveRecord
         Migration.verbose = verbose_was
       end
 
+      def migrate_status
+        unless ActiveRecord::SchemaMigration.table_exists?
+          Kernel.abort "Schema migrations table does not exist yet."
+        end
+
+        # output
+        puts "\ndatabase: #{ActiveRecord::Base.connection_config[:database]}\n\n"
+        puts "#{'Status'.center(8)}  #{'Migration ID'.ljust(14)}  Migration Name"
+        puts "-" * 50
+        ActiveRecord::Base.connection.migration_context.migrations_status.each do |status, version, name|
+          puts "#{status.center(8)}  #{version.ljust(14)}  #{name}"
+        end
+        puts
+      end
+
       def check_target_version
         if target_version && !(Migration::MigrationFilenameRegexp.match?(ENV["VERSION"]) || /\A\d+\z/.match?(ENV["VERSION"]))
           raise "Invalid format of target version: `VERSION=#{ENV['VERSION']}`"

activerecord/test/cases/tasks/database_tasks_test.rb

@@ -731,7 +731,7 @@ module ActiveRecord
   end
 
   if current_adapter?(:SQLite3Adapter) && !in_memory_db?
-    class DatabaseTasksMigrateTest < ActiveRecord::TestCase
+    class DatabaseTasksMigrationTestCase < ActiveRecord::TestCase
       self.use_transactional_tests = false
 
       # Use a memory db here to avoid having to rollback at the end
@@ -751,7 +751,9 @@ module ActiveRecord
         @conn.release_connection if @conn
         ActiveRecord::Base.establish_connection :arunit
       end
+    end
 
+    class DatabaseTasksMigrateTest < DatabaseTasksMigrationTestCase
       def test_migrate_set_and_unset_verbose_and_version_env_vars
         verbose, version = ENV["VERBOSE"], ENV["VERSION"]
         ENV["VERSION"] = "2"
@@ -812,6 +814,26 @@ module ActiveRecord
           end
         end
     end
+
+    class DatabaseTasksMigrateStatusTest < DatabaseTasksMigrationTestCase
+      def test_migrate_status_table
+        ActiveRecord::SchemaMigration.create_table
+        output = capture_migration_status
+        assert_match(/database: :memory:/, output)
+        assert_match(/down    001             Valid people have last names/, output)
+        assert_match(/down    002             We need reminders/, output)
+        assert_match(/down    003             Innocent jointable/, output)
+        ActiveRecord::SchemaMigration.drop_table
+      end
+
+      private
+
+        def capture_migration_status
+          capture(:stdout) do
+            ActiveRecord::Tasks::DatabaseTasks.migrate_status
+          end
+        end
+    end
   end
 
   class DatabaseTasksMigrateErrorTest < ActiveRecord::TestCase