require 'erb'
require 'yaml'
require 'csv'
require 'active_support/test_case'
if RUBY_VERSION < '1.9'
module YAML #:nodoc:
class Omap #:nodoc:
def keys; map { |k, v| k } end
def values; map { |k, v| v } end
end
end
end
if defined? ActiveRecord
class FixtureClassNotFound < ActiveRecord::ActiveRecordError #:nodoc:
end
else
class FixtureClassNotFound < StandardError #:nodoc:
end
end
# Fixtures are a way of organizing data that you want to test against; in short, sample data. They come in 3 flavors:
#
# 1. YAML fixtures
# 2. CSV fixtures
# 3. Single-file fixtures
#
# = YAML fixtures
#
# This type of fixture is in YAML format and the preferred default. YAML is a file format which describes data structures
# in a non-verbose, human-readable format. It ships with Ruby 1.8.1+.
#
# Unlike single-file fixtures, YAML fixtures are stored in a single file per model, which are placed in the directory appointed
# by ActiveSupport::TestCase.fixture_path=(path) (this is automatically configured for Rails, so you can just
# put your files in /test/fixtures/). The fixture file ends with the .yml file extension (Rails example:
# /test/fixtures/web_sites.yml). The format of a YAML fixture file looks like this:
#
# rubyonrails:
# id: 1
# name: Ruby on Rails
# url: http://www.rubyonrails.org
#
# google:
# id: 2
# name: Google
# url: http://www.google.com
#
# This YAML fixture file includes two fixtures. Each YAML fixture (ie. record) is given a name and is followed by an
# indented list of key/value pairs in the "key: value" format. Records are separated by a blank line for your viewing
# pleasure.
#
# Note that YAML fixtures are unordered. If you want ordered fixtures, use the omap YAML type. See http://yaml.org/type/omap.html
# for the specification. You will need ordered fixtures when you have foreign key constraints on keys in the same table.
# This is commonly needed for tree structures. Example:
#
# --- !omap
# - parent:
# id: 1
# parent_id: NULL
# title: Parent
# - child:
# id: 2
# parent_id: 1
# title: Child
#
# = CSV fixtures
#
# Fixtures can also be kept in the Comma Separated Value format. Akin to YAML fixtures, CSV fixtures are stored
# in a single file, but instead end with the .csv file extension
# (Rails example: /test/fixtures/web_sites.csv).
#
# The format of this type of fixture file is much more compact than the others, but also a little harder to read by us
# humans. The first line of the CSV file is a comma-separated list of field names. The rest of the file is then comprised
# of the actual data (1 per line). Here's an example:
#
# id, name, url
# 1, Ruby On Rails, http://www.rubyonrails.org
# 2, Google, http://www.google.com
#
# Should you have a piece of data with a comma character in it, you can place double quotes around that value. If you
# need to use a double quote character, you must escape it with another double quote.
#
# Another unique attribute of the CSV fixture is that it has *no* fixture name like the other two formats. Instead, the
# fixture names are automatically generated by deriving the class name of the fixture file and adding an incrementing
# number to the end. In our example, the 1st fixture would be called "web_site_1" and the 2nd one would be called
# "web_site_2".
#
# Most databases and spreadsheets support exporting to CSV format, so this is a great format for you to choose if you
# have existing data somewhere already.
#
# = Single-file fixtures
#
# This type of fixture was the original format for Active Record that has since been deprecated in favor of the YAML and CSV formats.
# Fixtures for this format are created by placing text files in a sub-directory (with the name of the model) to the directory
# appointed by ActiveSupport::TestCase.fixture_path=(path) (this is automatically configured for Rails, so you can just
# put your files in /test/fixtures// --
# like /test/fixtures/web_sites/ for the WebSite model).
#
# Each text file placed in this directory represents a "record". Usually these types of fixtures are named without
# extensions, but if you are on a Windows machine, you might consider adding .txt as the extension. Here's what the
# above example might look like:
#
# web_sites/google
# web_sites/yahoo.txt
# web_sites/ruby-on-rails
#
# The file format of a standard fixture is simple. Each line is a property (or column in db speak) and has the syntax
# of "name => value". Here's an example of the ruby-on-rails fixture above:
#
# id => 1
# name => Ruby on Rails
# url => http://www.rubyonrails.org
#
# = Using Fixtures
#
# Since fixtures are a testing construct, we use them in our unit and functional tests. There are two ways to use the
# fixtures, but first let's take a look at a sample unit test:
#
# require 'web_site'
#
# class WebSiteTest < ActiveSupport::TestCase
# def test_web_site_count
# assert_equal 2, WebSite.count
# end
# end
#
# As it stands, unless we pre-load the web_site table in our database with two records, this test will fail. Here's the
# easiest way to add fixtures to the database:
#
# ...
# class WebSiteTest < ActiveSupport::TestCase
# fixtures :web_sites # add more by separating the symbols with commas
# ...
#
# By adding a "fixtures" method to the test case and passing it a list of symbols (only one is shown here though), we trigger
# the testing environment to automatically load the appropriate fixtures into the database before each test.
# To ensure consistent data, the environment deletes the fixtures before running the load.
#
# In addition to being available in the database, the fixtures are also loaded into a hash stored in an instance variable
# of the test case. It is named after the symbol... so, in our example, there would be a hash available called
# @web_sites. This is where the "fixture name" comes into play.
#
# On top of that, each record is automatically "found" (using Model.find(id)) and placed in the instance variable of its name.
# So for the YAML fixtures, we'd get @rubyonrails and @google, which could be interrogated using regular Active Record semantics:
#
# # test if the object created from the fixture data has the same attributes as the data itself
# def test_find
# assert_equal @web_sites["rubyonrails"]["name"], @rubyonrails.name
# end
#
# As seen above, the data hash created from the YAML fixtures would have @web_sites["rubyonrails"]["url"] return
# "http://www.rubyonrails.org" and @web_sites["google"]["name"] would return "Google". The same fixtures, but loaded
# from a CSV fixture file, would be accessible via @web_sites["web_site_1"]["name"] == "Ruby on Rails" and have the individual
# fixtures available as instance variables @web_site_1 and @web_site_2.
#
# If you do not wish to use instantiated fixtures (usually for performance reasons) there are two options.
#
# - to completely disable instantiated fixtures:
# self.use_instantiated_fixtures = false
#
# - to keep the fixture instance (@web_sites) available, but do not automatically 'find' each instance:
# self.use_instantiated_fixtures = :no_instances
#
# Even if auto-instantiated fixtures are disabled, you can still access them
# by name via special dynamic methods. Each method has the same name as the
# model, and accepts the name of the fixture to instantiate:
#
# fixtures :web_sites
#
# def test_find
# assert_equal "Ruby on Rails", web_sites(:rubyonrails).name
# end
#
# = Dynamic fixtures with ERb
#
# Some times you don't care about the content of the fixtures as much as you care about the volume. In these cases, you can
# mix ERb in with your YAML or CSV fixtures to create a bunch of fixtures for load testing, like:
#
# <% for i in 1..1000 %>
# fix_<%= i %>:
# id: <%= i %>
# name: guy_<%= 1 %>
# <% end %>
#
# This will create 1000 very simple YAML fixtures.
#
# Using ERb, you can also inject dynamic values into your fixtures with inserts like <%= Date.today.strftime("%Y-%m-%d") %>.
# This is however a feature to be used with some caution. The point of fixtures are that they're stable units of predictable
# sample data. If you feel that you need to inject dynamic values, then perhaps you should reexamine whether your application
# is properly testable. Hence, dynamic values in fixtures are to be considered a code smell.
#
# = Transactional fixtures
#
# TestCases can use begin+rollback to isolate their changes to the database instead of having to delete+insert for every test case.
# They can also turn off auto-instantiation of fixture data since the feature is costly and often unused.
#
# class FooTest < ActiveSupport::TestCase
# self.use_transactional_fixtures = true
# self.use_instantiated_fixtures = false
#
# fixtures :foos
#
# def test_godzilla
# assert !Foo.find(:all).empty?
# Foo.destroy_all
# assert Foo.find(:all).empty?
# end
#
# def test_godzilla_aftermath
# assert !Foo.find(:all).empty?
# end
# end
#
# If you preload your test database with all fixture data (probably in the Rakefile task) and use transactional fixtures,
# then you may omit all fixtures declarations in your test cases since all the data's already there and every case rolls back its changes.
#
# In order to use instantiated fixtures with preloaded data, set +self.pre_loaded_fixtures+ to true. This will provide
# access to fixture data for every table that has been loaded through fixtures (depending on the value of +use_instantiated_fixtures+)
#
# When *not* to use transactional fixtures:
# 1. You're testing whether a transaction works correctly. Nested transactions don't commit until all parent transactions commit,
# particularly, the fixtures transaction which is begun in setup and rolled back in teardown. Thus, you won't be able to verify
# the results of your transaction until Active Record supports nested transactions or savepoints (in progress).
# 2. Your database does not support transactions. Every Active Record database supports transactions except MySQL MyISAM.
# Use InnoDB, MaxDB, or NDB instead.
#
# = Advanced YAML Fixtures
#
# YAML fixtures that don't specify an ID get some extra features:
#
# * Stable, autogenerated ID's
# * Label references for associations (belongs_to, has_one, has_many)
# * HABTM associations as inline lists
# * Autofilled timestamp columns
# * Fixture label interpolation
# * Support for YAML defaults
#
# == Stable, autogenerated ID's
#
# Here, have a monkey fixture:
#
# george:
# id: 1
# name: George the Monkey
#
# reginald:
# id: 2
# name: Reginald the Pirate
#
# Each of these fixtures has two unique identifiers: one for the database
# and one for the humans. Why don't we generate the primary key instead?
# Hashing each fixture's label yields a consistent ID:
#
# george: # generated id: 503576764
# name: George the Monkey
#
# reginald: # generated id: 324201669
# name: Reginald the Pirate
#
# Active Record looks at the fixture's model class, discovers the correct
# primary key, and generates it right before inserting the fixture
# into the database.
#
# The generated ID for a given label is constant, so we can discover
# any fixture's ID without loading anything, as long as we know the label.
#
# == Label references for associations (belongs_to, has_one, has_many)
#
# Specifying foreign keys in fixtures can be very fragile, not to
# mention difficult to read. Since Active Record can figure out the ID of
# any fixture from its label, you can specify FK's by label instead of ID.
#
# === belongs_to
#
# Let's break out some more monkeys and pirates.
#
# ### in pirates.yml
#
# reginald:
# id: 1
# name: Reginald the Pirate
# monkey_id: 1
#
# ### in monkeys.yml
#
# george:
# id: 1
# name: George the Monkey
# pirate_id: 1
#
# Add a few more monkeys and pirates and break this into multiple files,
# and it gets pretty hard to keep track of what's going on. Let's
# use labels instead of ID's:
#
# ### in pirates.yml
#
# reginald:
# name: Reginald the Pirate
# monkey: george
#
# ### in monkeys.yml
#
# george:
# name: George the Monkey
# pirate: reginald
#
# Pow! All is made clear. Active Record reflects on the fixture's model class,
# finds all the +belongs_to+ associations, and allows you to specify
# a target *label* for the *association* (monkey: george) rather than
# a target *id* for the *FK* (monkey_id: 1).
#
# ==== Polymorphic belongs_to
#
# Supporting polymorphic relationships is a little bit more complicated, since
# Active Record needs to know what type your association is pointing at. Something
# like this should look familiar:
#
# ### in fruit.rb
#
# belongs_to :eater, :polymorphic => true
#
# ### in fruits.yml
#
# apple:
# id: 1
# name: apple
# eater_id: 1
# eater_type: Monkey
#
# Can we do better? You bet!
#
# apple:
# eater: george (Monkey)
#
# Just provide the polymorphic target type and Active Record will take care of the rest.
#
# === has_and_belongs_to_many
#
# Time to give our monkey some fruit.
#
# ### in monkeys.yml
#
# george:
# id: 1
# name: George the Monkey
# pirate_id: 1
#
# ### in fruits.yml
#
# apple:
# id: 1
# name: apple
#
# orange:
# id: 2
# name: orange
#
# grape:
# id: 3
# name: grape
#
# ### in fruits_monkeys.yml
#
# apple_george:
# fruit_id: 1
# monkey_id: 1
#
# orange_george:
# fruit_id: 2
# monkey_id: 1
#
# grape_george:
# fruit_id: 3
# monkey_id: 1
#
# Let's make the HABTM fixture go away.
#
# ### in monkeys.yml
#
# george:
# name: George the Monkey
# pirate: reginald
# fruits: apple, orange, grape
#
# ### in fruits.yml
#
# apple:
# name: apple
#
# orange:
# name: orange
#
# grape:
# name: grape
#
# Zap! No more fruits_monkeys.yml file. We've specified the list of fruits
# on George's fixture, but we could've just as easily specified a list
# of monkeys on each fruit. As with +belongs_to+, Active Record reflects on
# the fixture's model class and discovers the +has_and_belongs_to_many+
# associations.
#
# == Autofilled timestamp columns
#
# If your table/model specifies any of Active Record's
# standard timestamp columns (+created_at+, +created_on+, +updated_at+, +updated_on+),
# they will automatically be set to Time.now.
#
# If you've set specific values, they'll be left alone.
#
# == Fixture label interpolation
#
# The label of the current fixture is always available as a column value:
#
# geeksomnia:
# name: Geeksomnia's Account
# subdomain: $LABEL
#
# Also, sometimes (like when porting older join table fixtures) you'll need
# to be able to get ahold of the identifier for a given label. ERB
# to the rescue:
#
# george_reginald:
# monkey_id: <%= Fixtures.identify(:reginald) %>
# pirate_id: <%= Fixtures.identify(:george) %>
#
# == Support for YAML defaults
#
# You probably already know how to use YAML to set and reuse defaults in
# your database.yml file. You can use the same technique in your fixtures:
#
# DEFAULTS: &DEFAULTS
# created_on: <%= 3.weeks.ago.to_s(:db) %>
#
# first:
# name: Smurf
# <<: *DEFAULTS
#
# second:
# name: Fraggle
# <<: *DEFAULTS
#
# Any fixture labeled "DEFAULTS" is safely ignored.
class Fixtures < (RUBY_VERSION < '1.9' ? YAML::Omap : Hash)
DEFAULT_FILTER_RE = /\.ya?ml$/
@@all_cached_fixtures = {}
def self.reset_cache(connection = nil)
connection ||= ActiveRecord::Base.connection
@@all_cached_fixtures[connection.object_id] = {}
end
def self.cache_for_connection(connection)
@@all_cached_fixtures[connection.object_id] ||= {}
@@all_cached_fixtures[connection.object_id]
end
def self.fixture_is_cached?(connection, table_name)
cache_for_connection(connection)[table_name]
end
def self.cached_fixtures(connection, keys_to_fetch = nil)
if keys_to_fetch
fixtures = cache_for_connection(connection).values_at(*keys_to_fetch)
else
fixtures = cache_for_connection(connection).values
end
fixtures.size > 1 ? fixtures : fixtures.first
end
def self.cache_fixtures(connection, fixtures_map)
cache_for_connection(connection).update(fixtures_map)
end
def self.instantiate_fixtures(object, table_name, fixtures, load_instances = true)
object.instance_variable_set "@#{table_name.to_s.gsub('.','_')}", fixtures
if load_instances
ActiveRecord::Base.silence do
fixtures.each do |name, fixture|
begin
object.instance_variable_set "@#{name}", fixture.find
rescue FixtureClassNotFound
nil
end
end
end
end
end
def self.instantiate_all_loaded_fixtures(object, load_instances = true)
all_loaded_fixtures.each do |table_name, fixtures|
Fixtures.instantiate_fixtures(object, table_name, fixtures, load_instances)
end
end
cattr_accessor :all_loaded_fixtures
self.all_loaded_fixtures = {}
def self.create_fixtures(fixtures_directory, table_names, class_names = {})
table_names = [table_names].flatten.map { |n| n.to_s }
connection = block_given? ? yield : ActiveRecord::Base.connection
table_names_to_fetch = table_names.reject { |table_name| fixture_is_cached?(connection, table_name) }
unless table_names_to_fetch.empty?
ActiveRecord::Base.silence do
connection.disable_referential_integrity do
fixtures_map = {}
fixtures = table_names_to_fetch.map do |table_name|
fixtures_map[table_name] = Fixtures.new(connection, File.split(table_name.to_s).last, class_names[table_name.to_sym], File.join(fixtures_directory, table_name.to_s))
end
all_loaded_fixtures.update(fixtures_map)
connection.transaction(connection.open_transactions.zero?) do
fixtures.reverse.each { |fixture| fixture.delete_existing_fixtures }
fixtures.each { |fixture| fixture.insert_fixtures }
# Cap primary key sequences to max(pk).
if connection.respond_to?(:reset_pk_sequence!)
table_names.each do |table_name|
connection.reset_pk_sequence!(table_name)
end
end
end
cache_fixtures(connection, fixtures_map)
end
end
end
cached_fixtures(connection, table_names)
end
# Returns a consistent identifier for +label+. This will always
# be a positive integer, and will always be the same for a given
# label, assuming the same OS, platform, and version of Ruby.
def self.identify(label)
label.to_s.hash.abs
end
attr_reader :table_name, :name
def initialize(connection, table_name, class_name, fixture_path, file_filter = DEFAULT_FILTER_RE)
@connection, @table_name, @fixture_path, @file_filter = connection, table_name, fixture_path, file_filter
@name = table_name # preserve fixture base name
@class_name = class_name ||
(ActiveRecord::Base.pluralize_table_names ? @table_name.singularize.camelize : @table_name.camelize)
@table_name = "#{ActiveRecord::Base.table_name_prefix}#{@table_name}#{ActiveRecord::Base.table_name_suffix}"
@table_name = class_name.table_name if class_name.respond_to?(:table_name)
@connection = class_name.connection if class_name.respond_to?(:connection)
read_fixture_files
end
def delete_existing_fixtures
@connection.delete "DELETE FROM #{@connection.quote_table_name(table_name)}", 'Fixture Delete'
end
def insert_fixtures
now = ActiveRecord::Base.default_timezone == :utc ? Time.now.utc : Time.now
now = now.to_s(:db)
# allow a standard key to be used for doing defaults in YAML
if is_a?(Hash)
delete('DEFAULTS')
else
delete(assoc('DEFAULTS'))
end
# track any join tables we need to insert later
habtm_fixtures = Hash.new do |h, habtm|
h[habtm] = HabtmFixtures.new(@connection, habtm.options[:join_table], nil, nil)
end
each do |label, fixture|
row = fixture.to_hash
if model_class && model_class < ActiveRecord::Base
# fill in timestamp columns if they aren't specified and the model is set to record_timestamps
if model_class.record_timestamps
timestamp_column_names.each do |name|
row[name] = now unless row.key?(name)
end
end
# interpolate the fixture label
row.each do |key, value|
row[key] = label if value == "$LABEL"
end
# generate a primary key if necessary
if has_primary_key_column? && !row.include?(primary_key_name)
row[primary_key_name] = Fixtures.identify(label)
end
# If STI is used, find the correct subclass for association reflection
reflection_class =
if row.include?(inheritance_column_name)
row[inheritance_column_name].constantize rescue model_class
else
model_class
end
reflection_class.reflect_on_all_associations.each do |association|
case association.macro
when :belongs_to
# Do not replace association name with association foreign key if they are named the same
fk_name = (association.options[:foreign_key] || "#{association.name}_id").to_s
if association.name.to_s != fk_name && value = row.delete(association.name.to_s)
if association.options[:polymorphic]
if value.sub!(/\s*\(([^\)]*)\)\s*$/, "")
target_type = $1
target_type_name = (association.options[:foreign_type] || "#{association.name}_type").to_s
# support polymorphic belongs_to as "label (Type)"
row[target_type_name] = target_type
end
end
row[fk_name] = Fixtures.identify(value)
end
when :has_and_belongs_to_many
if (targets = row.delete(association.name.to_s))
targets = targets.is_a?(Array) ? targets : targets.split(/\s*,\s*/)
join_fixtures = habtm_fixtures[association]
targets.each do |target|
join_fixtures["#{label}_#{target}"] = Fixture.new(
{ association.primary_key_name => row[primary_key_name],
association.association_foreign_key => Fixtures.identify(target) }, nil)
end
end
end
end
end
@connection.insert_fixture(fixture, @table_name)
end
# insert any HABTM join tables we discovered
habtm_fixtures.values.each do |fixture|
fixture.delete_existing_fixtures
fixture.insert_fixtures
end
end
private
class HabtmFixtures < ::Fixtures #:nodoc:
def read_fixture_files; end
end
def model_class
unless defined?(@model_class)
@model_class =
if @class_name.nil? || @class_name.is_a?(Class)
@class_name
else
@class_name.constantize rescue nil
end
end
@model_class
end
def primary_key_name
@primary_key_name ||= model_class && model_class.primary_key
end
def has_primary_key_column?
@has_primary_key_column ||= model_class && primary_key_name &&
model_class.columns.find { |c| c.name == primary_key_name }
end
def timestamp_column_names
@timestamp_column_names ||= %w(created_at created_on updated_at updated_on).select do |name|
column_names.include?(name)
end
end
def inheritance_column_name
@inheritance_column_name ||= model_class && model_class.inheritance_column
end
def column_names
@column_names ||= @connection.columns(@table_name).collect(&:name)
end
def read_fixture_files
if File.file?(yaml_file_path)
read_yaml_fixture_files
elsif File.file?(csv_file_path)
read_csv_fixture_files
end
end
def read_yaml_fixture_files
yaml_string = ""
Dir["#{@fixture_path}/**/*.yml"].select { |f| test(?f, f) }.each do |subfixture_path|
yaml_string << IO.read(subfixture_path)
end
yaml_string << IO.read(yaml_file_path)
if yaml = parse_yaml_string(yaml_string)
# If the file is an ordered map, extract its children.
yaml_value =
if yaml.respond_to?(:type_id) && yaml.respond_to?(:value)
yaml.value
else
[yaml]
end
yaml_value.each do |fixture|
raise Fixture::FormatError, "Bad data for #{@class_name} fixture named #{fixture}" unless fixture.respond_to?(:each)
fixture.each do |name, data|
unless data
raise Fixture::FormatError, "Bad data for #{@class_name} fixture named #{name} (nil)"
end
self[name] = Fixture.new(data, model_class)
end
end
end
end
def read_csv_fixture_files
reader = CSV.parse(erb_render(IO.read(csv_file_path)))
header = reader.shift
i = 0
reader.each do |row|
data = {}
row.each_with_index { |cell, j| data[header[j].to_s.strip] = cell.to_s.strip }
self["#{@class_name.to_s.underscore}_#{i+=1}"] = Fixture.new(data, model_class)
end
end
def yaml_file_path
"#{@fixture_path}.yml"
end
def csv_file_path
@fixture_path + ".csv"
end
def yaml_fixtures_key(path)
File.basename(@fixture_path).split(".").first
end
def parse_yaml_string(fixture_content)
YAML::load(erb_render(fixture_content))
rescue => error
raise Fixture::FormatError, "a YAML error occurred parsing #{yaml_file_path}. Please note that YAML must be consistently indented using spaces. Tabs are not allowed. Please have a look at http://www.yaml.org/faq.html\nThe exact error was:\n #{error.class}: #{error}"
end
def erb_render(fixture_content)
ERB.new(fixture_content).result
end
end
class Fixture #:nodoc:
include Enumerable
class FixtureError < StandardError #:nodoc:
end
class FormatError < FixtureError #:nodoc:
end
attr_reader :model_class
def initialize(fixture, model_class)
@fixture = fixture
@model_class = model_class.is_a?(Class) ? model_class : model_class.constantize rescue nil
end
def class_name
@model_class.name if @model_class
end
def each
@fixture.each { |item| yield item }
end
def [](key)
@fixture[key]
end
def to_hash
@fixture
end
def key_list
columns = @fixture.keys.collect{ |column_name| ActiveRecord::Base.connection.quote_column_name(column_name) }
columns.join(", ")
end
def value_list
list = @fixture.inject([]) do |fixtures, (key, value)|
col = model_class.columns_hash[key] if model_class.respond_to?(:ancestors) && model_class.ancestors.include?(ActiveRecord::Base)
fixtures << ActiveRecord::Base.connection.quote(value, col).gsub('[^\]\\n', "\n").gsub('[^\]\\r', "\r")
end
list * ', '
end
def find
if model_class
model_class.find(self[model_class.primary_key])
else
raise FixtureClassNotFound, "No class attached to find."
end
end
end
module ActiveRecord
module TestFixtures
def self.included(base)
base.class_eval do
setup :setup_fixtures
teardown :teardown_fixtures
superclass_delegating_accessor :fixture_path
superclass_delegating_accessor :fixture_table_names
superclass_delegating_accessor :fixture_class_names
superclass_delegating_accessor :use_transactional_fixtures
superclass_delegating_accessor :use_instantiated_fixtures # true, false, or :no_instances
superclass_delegating_accessor :pre_loaded_fixtures
self.fixture_table_names = []
self.use_transactional_fixtures = false
self.use_instantiated_fixtures = true
self.pre_loaded_fixtures = false
self.fixture_class_names = {}
end
base.extend ClassMethods
end
module ClassMethods
def set_fixture_class(class_names = {})
self.fixture_class_names = self.fixture_class_names.merge(class_names)
end
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
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
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
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
def uses_transaction(*methods)
@uses_transaction = [] unless defined?(@uses_transaction)
@uses_transaction.concat methods.map(&:to_s)
end
def uses_transaction?(method)
@uses_transaction = [] unless defined?(@uses_transaction)
@uses_transaction.include?(method.to_s)
end
end
def use_transactional_fixtures?
use_transactional_fixtures &&
!self.class.uses_transaction?(method_name)
end
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 = {}
@@already_loaded_fixtures ||= {}
# 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
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
private
def load_fixtures
@loaded_fixtures = {}
fixtures = Fixtures.create_fixtures(fixture_path, fixture_table_names, fixture_class_names)
unless fixtures.nil?
if fixtures.instance_of?(Fixtures)
@loaded_fixtures[fixtures.name] = fixtures
else
fixtures.each { |f| @loaded_fixtures[f.name] = f }
end
end
end
# for pre_loaded_fixtures, only require the classes once. huge speed improvement
@@required_fixture_classes = false
def instantiate_fixtures
if pre_loaded_fixtures
raise RuntimeError, 'Load fixtures before instantiating them.' if Fixtures.all_loaded_fixtures.empty?
unless @@required_fixture_classes
self.class.require_fixture_classes Fixtures.all_loaded_fixtures.keys
@@required_fixture_classes = true
end
Fixtures.instantiate_all_loaded_fixtures(self, load_instances?)
else
raise RuntimeError, 'Load fixtures before instantiating them.' if @loaded_fixtures.nil?
@loaded_fixtures.each do |table_name, fixtures|
Fixtures.instantiate_fixtures(self, table_name, fixtures, load_instances?)
end
end
end
def load_instances?
use_instantiated_fixtures != :no_instances
end
end
end