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require 'cases/helper'
class EagerLoadPolyAssocsTest < Test::Unit::TestCase
NUM_SIMPLE_OBJS = 50
NUM_SHAPE_EXPRESSIONS = 100
def setup
silence_stream(STDOUT) { create_test_tables }
generate_test_object_graphs
end
def create_test_tables
conn = ActiveRecord::Base.connection
options = { :force => true, :options => "Engine=MyISAM" }
[:circles, :squares, :triangles, :non_poly_ones, :non_poly_twos].each do |t|
conn.create_table(t, options) { }
end
conn.create_table :shape_expressions, options do |t|
t.string :paint_type
t.integer :paint_id
t.string :shape_type
t.integer :shape_id
end
conn.create_table :paint_colors, options do |t|
t.integer :non_poly_one_id
end
conn.create_table :paint_textures, options do |t|
t.integer :non_poly_two_id
end
end
def teardown
drop_tables
end
def drop_tables
conn = ActiveRecord::Base.connection
conn.reconnect!
silence_stream(STDOUT) do
[:circles, :squares, :triangles, :paint_colors, :paint_textures,
:shape_expressions, :non_poly_ones, :non_poly_twos].each do |t|
conn.drop_table t
end
end
end
# meant to be supplied as an ID, never returns 0
def rand_simple
val = (NUM_SIMPLE_OBJS * rand).round
val == 0 ? 1 : val
end
def generate_test_object_graphs
1.upto(NUM_SIMPLE_OBJS) do
[Circle, Square, Triangle, NonPolyOne, NonPolyTwo].map(&:create!)
end
1.upto(NUM_SIMPLE_OBJS) do |i|
PaintColor.create!(:non_poly_one_id => rand_simple)
PaintTexture.create!(:non_poly_two_id => rand_simple)
end
1.upto(NUM_SHAPE_EXPRESSIONS) do |i|
ShapeExpression.create!(:shape_type => [Circle, Square, Triangle].rand.to_s, :shape_id => rand_simple,
:paint_type => [PaintColor, PaintTexture].rand.to_s, :paint_id => rand_simple)
end
end
def test_include_query
res = 0
res = ShapeExpression.find :all, :include => [ :shape, { :paint => :non_poly } ]
assert_equal NUM_SHAPE_EXPRESSIONS, res.size
ShapeExpression.connection.disconnect!
assert_nothing_raised "confirm we can access associations in memory" do
res.each do |se|
assert_not_nil se.paint.non_poly, "this is the association that was loading incorrectly before the change"
assert_not_nil se.shape, "just making sure other associations still work"
end
end
assert_raise ActiveRecord::StatementInvalid, "An exception should be raised when db connectivity is required" do
res[0].reload
end
end
end
class ShapeExpression < ActiveRecord::Base
belongs_to :shape, :polymorphic => true
belongs_to :paint, :polymorphic => true
end
class Circle < ActiveRecord::Base
has_many :shape_expressions, :as => :shape
end
class Square < ActiveRecord::Base
has_many :shape_expressions, :as => :shape
end
class Triangle < ActiveRecord::Base
has_many :shape_expressions, :as => :shape
end
class PaintColor < ActiveRecord::Base
has_many :shape_expressions, :as => :paint
belongs_to :non_poly, :foreign_key => "non_poly_one_id", :class_name => "NonPolyOne"
end
class PaintTexture < ActiveRecord::Base
has_many :shape_expressions, :as => :paint
belongs_to :non_poly, :foreign_key => "non_poly_two_id", :class_name => "NonPolyTwo"
end
class NonPolyOne < ActiveRecord::Base
has_many :paint_colors
end
class NonPolyTwo < ActiveRecord::Base
has_many :paint_textures
end
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