bug report template for migrations (#26488)

* added bug report template for migrations

2 files changed, 129 insertions, 0 deletions

diff --git a/guides/bug_report_templates/active_record_migrations_gem.rb b/guides/bug_report_templates/active_record_migrations_gem.rb
new file mode 100644
index 0000000000..f568a111f6
--- /dev/null
+++ b/guides/bug_report_templates/active_record_migrations_gem.rb
@@ -0,0 +1,65 @@
+begin
+  require "bundler/inline"
+rescue LoadError => e
+  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
+  raise e
+end
+
+gemfile(true) do
+  source "https://rubygems.org"
+  # Activate the gem you are reporting the issue against.
+  gem "activerecord", "5.0.0.1"
+  gem "sqlite3"
+end
+
+require "active_record"
+require "minitest/autorun"
+require "logger"
+
+# Ensure backward compatibility with Minitest 4
+Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)
+
+# This connection will do for database-independent bug reports.
+ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
+ActiveRecord::Base.logger = Logger.new(STDOUT)
+
+ActiveRecord::Schema.define do
+  create_table :payments, force: true do |t|
+    t.decimal :amount, precision: 10, scale: 0, default: 0, null: false
+  end
+end
+
+class Payment < ActiveRecord::Base
+end
+
+class ChangeAmountToAddScale < ActiveRecord::Migration[5.0]
+  def change
+    reversible do |dir|
+      dir.up do
+        change_column :payments, :amount, :decimal, precision: 10, scale: 2, default: 0, null: false
+      end
+
+      dir.down do
+        change_column :payments, :amount, :decimal, precision: 10, scale: 0, default: 0, null: false
+      end
+    end
+  end
+end
+
+class BugTest < Minitest::Test
+  def test_migration_up
+    migrator = ActiveRecord::Migrator.new(:up, [ChangeAmountToAddScale])
+    migrator.run
+    Payment.reset_column_information
+
+    assert_equal "decimal(10,2)", Payment.columns.last.sql_type
+  end
+
+  def test_migration_down
+    migrator = ActiveRecord::Migrator.new(:down, [ChangeAmountToAddScale])
+    migrator.run
+    Payment.reset_column_information
+
+    assert_equal "decimal(10,0)", Payment.columns.last.sql_type
+  end
+end
\ No newline at end of file
diff --git a/guides/bug_report_templates/active_record_migrations_master.rb b/guides/bug_report_templates/active_record_migrations_master.rb
new file mode 100644
index 0000000000..ef7b42e0a6
--- /dev/null
+++ b/guides/bug_report_templates/active_record_migrations_master.rb
@@ -0,0 +1,64 @@
+begin
+  require "bundler/inline"
+rescue LoadError => e
+  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
+  raise e
+end
+
+gemfile(true) do
+  source "https://rubygems.org"
+  gem "rails", github: "rails/rails"
+  gem "sqlite3"
+end
+
+require "active_record"
+require "minitest/autorun"
+require "logger"
+
+# Ensure backward compatibility with Minitest 4
+Minitest::Test = MiniTest::Unit::TestCase unless defined?(Minitest::Test)
+
+# This connection will do for database-independent bug reports.
+ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
+ActiveRecord::Base.logger = Logger.new(STDOUT)
+
+ActiveRecord::Schema.define do
+  create_table :payments, force: true do |t|
+    t.decimal :amount, precision: 10, scale: 0, default: 0, null: false
+  end
+end
+
+class Payment < ActiveRecord::Base
+end
+
+class ChangeAmountToAddScale < ActiveRecord::Migration[5.0]
+  def change
+    reversible do |dir|
+      dir.up do
+        change_column :payments, :amount, :decimal, precision: 10, scale: 2, default: 0, null: false
+      end
+
+      dir.down do
+        change_column :payments, :amount, :decimal, precision: 10, scale: 0, default: 0, null: false
+      end
+    end
+  end
+end
+
+class BugTest < Minitest::Test
+  def test_migration_up
+    migrator = ActiveRecord::Migrator.new(:up, [ChangeAmountToAddScale])
+    migrator.run
+    Payment.reset_column_information
+
+    assert_equal "decimal(10,2)", Payment.columns.last.sql_type
+  end
+
+  def test_migration_down
+    migrator = ActiveRecord::Migrator.new(:down, [ChangeAmountToAddScale])
+    migrator.run
+    Payment.reset_column_information
+
+    assert_equal "decimal(10,0)", Payment.columns.last.sql_type
+  end
+end
\ No newline at end of file