diff options
Diffstat (limited to 'activerecord/test/cases/migration/compatibility_test.rb')
-rw-r--r-- | activerecord/test/cases/migration/compatibility_test.rb | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/activerecord/test/cases/migration/compatibility_test.rb b/activerecord/test/cases/migration/compatibility_test.rb new file mode 100644 index 0000000000..6d5b6243db --- /dev/null +++ b/activerecord/test/cases/migration/compatibility_test.rb @@ -0,0 +1,106 @@ +require 'cases/helper' + +module ActiveRecord + class Migration + class CompatibilityTest < ActiveRecord::TestCase + attr_reader :connection + self.use_transactional_tests = false + + def setup + super + @connection = ActiveRecord::Base.connection + @verbose_was = ActiveRecord::Migration.verbose + ActiveRecord::Migration.verbose = false + + connection.create_table :testings do |t| + t.column :foo, :string, :limit => 100 + t.column :bar, :string, :limit => 100 + end + end + + teardown do + connection.drop_table :testings rescue nil + ActiveRecord::Migration.verbose = @verbose_was + ActiveRecord::SchemaMigration.delete_all + end + + def test_migration_doesnt_remove_named_index + connection.add_index :testings, :foo, :name => "custom_index_name" + + migration = Class.new(ActiveRecord::Migration[4.2]) { + def version; 101 end + def migrate(x) + remove_index :testings, :foo + end + }.new + + assert connection.index_exists?(:testings, :foo, name: "custom_index_name") + assert_raise(StandardError) { ActiveRecord::Migrator.new(:up, [migration]).migrate } + assert connection.index_exists?(:testings, :foo, name: "custom_index_name") + end + + def test_migration_does_remove_unnamed_index + connection.add_index :testings, :bar + + migration = Class.new(ActiveRecord::Migration[4.2]) { + def version; 101 end + def migrate(x) + remove_index :testings, :bar + end + }.new + + assert connection.index_exists?(:testings, :bar) + ActiveRecord::Migrator.new(:up, [migration]).migrate + assert_not connection.index_exists?(:testings, :bar) + end + + def test_references_does_not_add_index_by_default + migration = Class.new(ActiveRecord::Migration) { + def migrate(x) + create_table :more_testings do |t| + t.references :foo + t.belongs_to :bar, index: false + end + end + }.new + + ActiveRecord::Migrator.new(:up, [migration]).migrate + + assert_not connection.index_exists?(:more_testings, :foo_id) + assert_not connection.index_exists?(:more_testings, :bar_id) + ensure + connection.drop_table :more_testings rescue nil + end + + def test_timestamps_have_null_constraints_if_not_present_in_migration_of_create_table + migration = Class.new(ActiveRecord::Migration) { + def migrate(x) + create_table :more_testings do |t| + t.timestamps + end + end + }.new + + ActiveRecord::Migrator.new(:up, [migration]).migrate + + assert connection.columns(:more_testings).find { |c| c.name == 'created_at' }.null + assert connection.columns(:more_testings).find { |c| c.name == 'updated_at' }.null + ensure + connection.drop_table :more_testings rescue nil + end + + def test_timestamps_have_null_constraints_if_not_present_in_migration_for_adding_timestamps_to_existing_table + migration = Class.new(ActiveRecord::Migration) { + def migrate(x) + add_timestamps :testings + end + }.new + + ActiveRecord::Migrator.new(:up, [migration]).migrate + + assert connection.columns(:testings).find { |c| c.name == 'created_at' }.null + assert connection.columns(:testings).find { |c| c.name == 'updated_at' }.null + end + end + end +end |