Class: Test::Unit::TestCase

Inherits:
Object
  • Object
show all
Defined in:
lib/active_record/fixtures.rb

Overview

:nodoc:

Constant Summary collapse

@@already_loaded_fixtures = 
{}

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.fixtures(*table_names) ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 842

def fixtures(*table_names)
  if table_names.first == :all
    table_names = Dir["#{fixture_path}/*.yml"] + Dir["#{fixture_path}/*.csv"]
    table_names.map! { |f| File.basename(f).split('.')[0..-2].join('.') }
  else
    table_names = table_names.flatten.map { |n| n.to_s }
  end

  self.fixture_table_names |= table_names
  require_fixture_classes(table_names)
  setup_fixture_accessors(table_names)
end

.require_fixture_classes(table_names = nil) ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 867

def require_fixture_classes(table_names = nil)
  (table_names || fixture_table_names).each do |table_name|
    file_name = table_name.to_s
    file_name = file_name.singularize if ActiveRecord::Base.pluralize_table_names
    try_to_load_dependency(file_name)
  end
end

.set_fixture_class(class_names = {}) ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 838

def set_fixture_class(class_names = {})
  self.fixture_class_names = self.fixture_class_names.merge(class_names)
end

.setup_fixture_accessors(table_names = nil) ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 875

def setup_fixture_accessors(table_names = nil)
  table_names = [table_names] if table_names && !table_names.respond_to?(:each)
  (table_names || fixture_table_names).each do |table_name|
    table_name = table_name.to_s.tr('.', '_')

    define_method(table_name) do |*fixtures|
      force_reload = fixtures.pop if fixtures.last == true || fixtures.last == :reload

      @fixture_cache[table_name] ||= {}

      instances = fixtures.map do |fixture|
        @fixture_cache[table_name].delete(fixture) if force_reload

        if @loaded_fixtures[table_name][fixture.to_s]
          @fixture_cache[table_name][fixture] ||= @loaded_fixtures[table_name][fixture.to_s].find
        else
          raise StandardError, "No fixture with name '#{fixture}' found for table '#{table_name}'"
        end
      end

      instances.size == 1 ? instances.first : instances
    end
  end
end

.try_to_load_dependency(file_name) ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 855

def try_to_load_dependency(file_name)
  require_dependency file_name
rescue LoadError => e
  # Let's hope the developer has included it himself

  # Let's warn in case this is a subdependency, otherwise
  # subdependency error messages are totally cryptic
  if ActiveRecord::Base.logger
    ActiveRecord::Base.logger.warn("Unable to load #{file_name}, underlying cause #{e.message} \n\n #{e.backtrace.join("\n")}")
  end
end

.uses_transaction(*methods) ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 900

def uses_transaction(*methods)
  @uses_transaction = [] unless defined?(@uses_transaction)
  @uses_transaction.concat methods.map(&:to_s)
end

.uses_transaction?(method) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/fixtures.rb', line 905

def uses_transaction?(method)
  @uses_transaction = [] unless defined?(@uses_transaction)
  @uses_transaction.include?(method.to_s)
end

Instance Method Details

#setup_fixtures ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 916

def setup_fixtures
  return unless defined?(ActiveRecord) && !ActiveRecord::Base.configurations.blank?

  if pre_loaded_fixtures && !use_transactional_fixtures
    raise RuntimeError, 'pre_loaded_fixtures requires use_transactional_fixtures'
  end

  @fixture_cache = {}

  # Load fixtures once and begin transaction.
  if use_transactional_fixtures?
    if @@already_loaded_fixtures[self.class]
      @loaded_fixtures = @@already_loaded_fixtures[self.class]
    else
      load_fixtures
      @@already_loaded_fixtures[self.class] = @loaded_fixtures
    end
    ActiveRecord::Base.connection.increment_open_transactions
    ActiveRecord::Base.connection.begin_db_transaction
  # Load fixtures for every test.
  else
    Fixtures.reset_cache
    @@already_loaded_fixtures[self.class] = nil
    load_fixtures
  end

  # Instantiate fixtures for every test if requested.
  instantiate_fixtures if use_instantiated_fixtures
end

#teardown_fixtures ⇒ Object 



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# File 'lib/active_record/fixtures.rb', line 946

def teardown_fixtures
  return unless defined?(ActiveRecord) && !ActiveRecord::Base.configurations.blank?

  unless use_transactional_fixtures?
    Fixtures.reset_cache
  end

  # Rollback changes if a transaction is active.
  if use_transactional_fixtures? && ActiveRecord::Base.connection.open_transactions != 0
    ActiveRecord::Base.connection.rollback_db_transaction
    ActiveRecord::Base.connection.decrement_open_transactions
  end
  ActiveRecord::Base.clear_active_connections!
end

#use_transactional_fixtures? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_record/fixtures.rb', line 911

def use_transactional_fixtures?
  use_transactional_fixtures &&
    !self.class.uses_transaction?(method_name)
end