assert_class_method

Asserts the given class method exists in the given content. This method does not detect class methods inside (class << self), only class methods which starts with âself.â. When a block is given, it yields the content of the method.

assert_migration "db/migrate/create_products.rb" do |migration|
  assert_class_method :up, migration do |up|
    assert_match(/create_table/, up)
  end
end