Ticket #1732: active_record_bug.diff

activerecord/test/associations_test.rb

@@ -5 +5 @@
-require 'fixtures/topic'
-require 'fixtures/reply'
-require 'fixtures/computer'
+require 'fixtures/graphnode'
-
-# Can't declare new classes in test case methods, so tests before that
-bad_collection_keys = false
@@ -801 +802 @@
-
-
-class HasAndBelongsToManyAssociationsTest < Test::Unit::TestCase
-
+, :graphnodes, :graphnode_links
-  
-  def test_has_and_belongs_to_many
-    david = Developer.find(1)
@@ -829 +830 @@
-    assert_equal 2, action_controller.developers(true).size
-  end
-
+  def test_finder_sql_cache
+    shared_node = graphnodes(:shared_subchild)
+    child_one = graphnodes(:child_one)
+    child_two = graphnodes(:child_two)
+    
+    assert_equal 2, shared_node.parent_nodes.size
+    assert_equal child_one, shared_node.parent_nodes.first
+    assert_equal 1, child_one.parent_nodes.size
+  end
+
-  def test_adding_type_mismatch
-    jamis = Developer.find(2)
-    assert_raise(ActiveRecord::AssociationTypeMismatch) { jamis.projects << nil }

activerecord/test/fixtures/graphnodes.yml

@@ +1 @@
+root_node:
+  id: 1
+  name: Root Node
+child_one:
+  id: 2
+  name: Child One
+child_two:
+  id: 3
+  name: Child Two
+subchild_one:
+  id: 4
+  name: Subchild One
+subchild_two:
+  id: 5
+  name: Subchild Two
+shared_subchild:
+  id: 6
+  name: Shared Subchild
+subsubchild:
+  id: 7
+  name: Sub-sub child

activerecord/test/fixtures/db_definitions/mysql.sql

@@ -180 +180 @@
-
-  FOREIGN KEY (`fk_id`) REFERENCES `fk_test_has_pk`(`id`)
-) TYPE=InnoDB;
+
+CREATE TABLE `graphnodes` (
+  `id`   INTEGER NOT NULL auto_increment,
+  `name` VARCHAR(255) NOT NULL,
+  PRIMARY KEY  (`id`)
+) TYPE=InnoDB;
+
+CREATE TABLE `graphnode_links` (
+  `parent_node_id` INTEGER NOT NULL,
+  `child_node_id` INTEGER NOT NULL,
+  PRIMARY KEY  (`parent_node_id`,`child_node_id`),
+  CONSTRAINT `FK_child_node` FOREIGN KEY (`child_node_id`) REFERENCES `graphnodes` (`id`),
+  CONSTRAINT `FK_parent_node` FOREIGN KEY (`parent_node_id`) REFERENCES `graphnodes` (`id`)
+) TYPE=InnoDB;
+

activerecord/test/fixtures/db_definitions/mysql.drop.sql

@@ -21 +21 @@
-DROP TABLE authors;
-DROP TABLE categories;
-DROP TABLE categories_posts;
+DROP TABLE graphnodes;
+DROP TABLE graphnode_links;

activerecord/test/fixtures/graphnode_links.yml

@@ +1 @@
+link_one:
+  parent_node_id: 1
+  child_node_id: 2
+link_two:
+  parent_node_id: 1
+  child_node_id: 3
+link_three:
+  parent_node_id: 2
+  child_node_id: 4
+link_four:
+  parent_node_id: 2
+  child_node_id: 5
+link_five:
+  parent_node_id: 2
+  child_node_id: 6
+link_six:
+  parent_node_id: 3
+  child_node_id: 6
+link_seven:
+  parent_node_id: 6
+  child_node_id: 7

activerecord/test/fixtures/graphnode.rb

@@ +1 @@
+class Graphnode < ActiveRecord::Base
+  has_and_belongs_to_many :parent_nodes,
+    :class_name => 'Graphnode',
+    :finder_sql => 'SELECT n.* FROM graphnodes n, graphnode_links l ' +
+                   ' WHERE n.id = l.parent_node_id ' +
+                   '   AND l.child_node_id = #{id}'
+
+  has_and_belongs_to_many :child_nodes,
+    :class_name => 'Graphnode',
+    :finder_sql => 'SELECT n.* FROM graphnodes n, graphnode_links l ' +
+                   ' WHERE n.id = l.child_node_id ' +
+                   '   AND l.parent_node_id = #{id}'
+end