1 files changed, 29 insertions, 0 deletions
diff --git a/spec/support/migrations_helpers.rb b/spec/support/migrations_helpers.rb
new file mode 100644
index 00000000000..91fbb4eaf48
--- /dev/null
+++ b/spec/support/migrations_helpers.rb
@@ -0,0 +1,29 @@
+module MigrationsHelpers
+  def table(name)
+    Class.new(ActiveRecord::Base) { self.table_name = name }
+  end
+
+  def migrations_paths
+    ActiveRecord::Migrator.migrations_paths
+  end
+
+  def table_exists?(name)
+    ActiveRecord::Base.connection.table_exists?(name)
+  end
+
+  def migrations
+    ActiveRecord::Migrator.migrations(migrations_paths)
+  end
+
+  def previous_migration
+    migrations.each_cons(2) do |previous, migration|
+      break previous if migration.name == described_class.name
+    end
+  end
+
+  def migrate!
+    ActiveRecord::Migrator.up(migrations_paths) do |migration|
+      migration.name == described_class.name
+    end
+  end
+end