1 files changed, 549 insertions, 0 deletions
diff --git a/activerecord/test/associations_test.rb b/activerecord/test/associations_test.rb
new file mode 100755
index 0000000000..2eb6ba267e
--- /dev/null
+++ b/activerecord/test/associations_test.rb
@@ -0,0 +1,549 @@
+require 'abstract_unit'
+require 'fixtures/developer'
+require 'fixtures/project'
+# require File.dirname(__FILE__) + '/../dev-utils/eval_debugger'
+require 'fixtures/company'
+require 'fixtures/topic'
+require 'fixtures/reply'
+
+# Can't declare new classes in test case methods, so tests before that
+bad_collection_keys = false
+begin
+  class Car < ActiveRecord::Base; has_many :wheels, :name => "wheels"; end
+rescue ActiveRecord::ActiveRecordError
+  bad_collection_keys = true
+end
+raise "ActiveRecord should have barked on bad collection keys" unless bad_collection_keys
+
+
+class AssociationsTest < Test::Unit::TestCase
+  def setup
+    create_fixtures "accounts", "companies", "accounts", "developers", "projects", "developers_projects"  
+    @signals37 = Firm.find(1)
+  end
+  
+  def test_force_reload
+    firm = Firm.new
+    firm.save
+    firm.clients.each {|c|} # forcing to load all clients
+    assert firm.clients.empty?, "New firm shouldn't have client objects"
+    assert !firm.has_clients?, "New firm shouldn't have clients"
+    assert_equal 0, firm.clients.size, "New firm should have 0 clients"
+
+    client = Client.new("firm_id" => firm.id)
+    client.save
+
+    assert firm.clients.empty?, "New firm should have cached no client objects"
+    assert !firm.has_clients?, "New firm should have cached a no-clients response"
+    assert_equal 0, firm.clients.size, "New firm should have cached 0 clients count"
+
+    assert !firm.clients(true).empty?, "New firm should have reloaded client objects"
+    assert_equal 1, firm.clients(true).size, "New firm should have reloaded clients count"
+  end
+
+  def test_storing_in_pstore
+    require "tmpdir"
+    store_filename = File.join(Dir.tmpdir, "ar-pstore-association-test")
+    File.delete(store_filename) if File.exists?(store_filename)
+    require "pstore"
+    apple = Firm.create("name" => "Apple")
+    natural = Client.new("name" => "Natural Company")
+    apple.clients << natural
+
+    db = PStore.new(store_filename)
+    db.transaction do
+      db["apple"] = apple
+    end
+
+    db = PStore.new(store_filename)
+    db.transaction do
+      assert_equal "Natural Company", db["apple"].clients.first.name
+    end
+  end
+end
+
+class HasOneAssociationsTest < Test::Unit::TestCase
+  def setup
+    create_fixtures "accounts", "companies", "accounts", "developers", "projects", "developers_projects"
+    @signals37 = Firm.find(1)
+  end
+  
+  def test_has_one
+    assert_equal @signals37.account, Account.find(1)
+    assert_equal Account.find(1).credit_limit, @signals37.account.credit_limit
+    assert @signals37.has_account?, "37signals should have an account"
+    assert Account.find(1).firm?(@signals37), "37signals account should be able to backtrack"
+    assert Account.find(1).has_firm?, "37signals account should be able to backtrack"
+
+    assert !Account.find(2).has_firm?, "Unknown isn't linked"
+    assert !Account.find(2).firm?(@signals37), "Unknown isn't linked"
+  end
+
+  def test_type_mismatch
+    assert_raises(ActiveRecord::AssociationTypeMismatch) { @signals37.account = 1 }
+    assert_raises(ActiveRecord::AssociationTypeMismatch) { @signals37.account = Project.find(1) }
+  end
+
+  def test_natural_assignment
+    apple = Firm.create("name" => "Apple")
+    citibank = Account.create("credit_limit" => 10)
+    apple.account = citibank
+    assert_equal apple.id, citibank.firm_id
+  end
+  
+  def test_natural_assignment_to_nil
+    old_account_id = @signals37.account.id
+    @signals37.account = nil
+    @signals37.save
+    assert_nil @signals37.account
+    assert_nil Account.find(old_account_id).firm_id
+  end
+
+  def test_build
+    firm = Firm.new("name" => "GlobalMegaCorp")
+    firm.save
+    
+    account = firm.build_account("credit_limit" => 1000)
+    assert account.save
+    assert_equal account, firm.account
+  end
+
+  def test_failing_build_association
+    firm = Firm.new("name" => "GlobalMegaCorp")
+    firm.save
+    
+    account = firm.build_account
+    assert !account.save
+    assert_equal "can't be empty", account.errors.on("credit_limit")
+  end
+
+  def test_create
+    firm = Firm.new("name" => "GlobalMegaCorp")
+    firm.save
+    assert_equal firm.create_account("credit_limit" => 1000), firm.account
+  end
+  
+  def test_dependence
+    firm = Firm.find(1)
+    assert !firm.account.nil?
+    firm.destroy
+    assert_equal 1, Account.find_all.length
+  end
+
+  def test_dependence_with_missing_association
+    Account.destroy_all
+    firm = Firm.find(1)    
+    assert !firm.has_account?
+    firm.destroy
+  end
+end
+
+
+class HasManyAssociationsTest < Test::Unit::TestCase
+  def setup
+    create_fixtures "accounts", "companies", "accounts", "developers", "projects", "developers_projects", "topics"
+    @signals37 = Firm.find(1)
+  end
+  
+  def force_signal37_to_load_all_clients_of_firm
+    @signals37.clients_of_firm.each {|f| }
+  end
+  
+  def test_finding
+    assert_equal 2, Firm.find_first.clients.length
+  end
+
+  def test_finding_default_orders
+    assert_equal "Summit", Firm.find_first.clients.first.name
+  end
+
+  def test_finding_with_different_class_name_and_order
+    assert_equal "Microsoft", Firm.find_first.clients_sorted_desc.first.name
+  end
+
+  def test_finding_with_foreign_key
+    assert_equal "Microsoft", Firm.find_first.clients_of_firm.first.name
+  end
+
+  def test_finding_with_condition
+    assert_equal "Microsoft", Firm.find_first.clients_like_ms.first.name
+  end
+
+  def test_finding_using_sql
+    firm = Firm.find_first
+    first_client = firm.clients_using_sql.first
+    assert_not_nil first_client
+    assert_equal "Microsoft", first_client.name
+    assert_equal 1, firm.clients_using_sql.size
+    assert_equal 1, Firm.find_first.clients_using_sql.size
+  end
+
+  def test_find_all
+    assert_equal 2, Firm.find_first.clients.find_all("type = 'Client'").length
+    assert_equal 1, Firm.find_first.clients.find_all("name = 'Summit'").length
+  end
+
+  def test_find_all_sanitized
+    firm = Firm.find_first
+    assert_equal firm.clients.find_all("name = 'Summit'"), firm.clients.find_all(["name = '%s'", "Summit"])
+  end
+
+  def test_find_in_collection
+    assert_equal Client.find(2).name, @signals37.clients.find(2).name
+    assert_equal Client.find(2).name, @signals37.clients.find {|c| c.name == @signals37.clients.find(2).name }.name
+    assert_raises(ActiveRecord::RecordNotFound) { @signals37.clients.find(6) }
+  end
+
+  def test_adding
+    force_signal37_to_load_all_clients_of_firm
+    natural = Client.new("name" => "Natural Company")
+    @signals37.clients_of_firm << natural
+    assert_equal 2, @signals37.clients_of_firm.size # checking via the collection
+    assert_equal 2, @signals37.clients_of_firm(true).size # checking using the db
+    assert_equal natural, @signals37.clients_of_firm.last
+  end
+  
+  def test_adding_a_mismatch_class
+    assert_raises(ActiveRecord::AssociationTypeMismatch) { @signals37.clients_of_firm << nil }
+    assert_raises(ActiveRecord::AssociationTypeMismatch) { @signals37.clients_of_firm << 1 }
+    assert_raises(ActiveRecord::AssociationTypeMismatch) { @signals37.clients_of_firm << Topic.find(1) }
+  end
+  
+  def test_adding_a_collection
+    force_signal37_to_load_all_clients_of_firm
+    @signals37.clients_of_firm.concat([Client.new("name" => "Natural Company"), Client.new("name" => "Apple")])
+    assert_equal 3, @signals37.clients_of_firm.size
+    assert_equal 3, @signals37.clients_of_firm(true).size
+  end
+
+  def test_build
+    new_client = @signals37.clients_of_firm.build("name" => "Another Client")
+    assert_equal "Another Client", new_client.name
+    assert new_client.save
+    assert_equal 2, @signals37.clients_of_firm(true).size
+  end
+  
+  def test_create
+    force_signal37_to_load_all_clients_of_firm
+    new_client = @signals37.clients_of_firm.create("name" => "Another Client")
+    assert_equal new_client, @signals37.clients_of_firm.last
+    assert_equal new_client, @signals37.clients_of_firm(true).last
+  end
+
+  def test_deleting
+    force_signal37_to_load_all_clients_of_firm
+    @signals37.clients_of_firm.delete(@signals37.clients_of_firm.first)
+    assert_equal 0, @signals37.clients_of_firm.size
+    assert_equal 0, @signals37.clients_of_firm(true).size
+  end
+
+  def test_deleting_a_collection
+    force_signal37_to_load_all_clients_of_firm
+    @signals37.clients_of_firm.create("name" => "Another Client")
+    assert_equal 2, @signals37.clients_of_firm.size
+    #@signals37.clients_of_firm.clear
+    @signals37.clients_of_firm.delete([@signals37.clients_of_firm[0], @signals37.clients_of_firm[1]])
+    assert_equal 0, @signals37.clients_of_firm.size
+    assert_equal 0, @signals37.clients_of_firm(true).size
+  end
+
+  def test_deleting_a_association_collection
+    force_signal37_to_load_all_clients_of_firm
+    @signals37.clients_of_firm.create("name" => "Another Client")
+    assert_equal 2, @signals37.clients_of_firm.size
+    @signals37.clients_of_firm.clear
+    assert_equal 0, @signals37.clients_of_firm.size
+    assert_equal 0, @signals37.clients_of_firm(true).size
+  end
+
+  def test_deleting_a_item_which_is_not_in_the_collection
+    force_signal37_to_load_all_clients_of_firm
+    summit = Client.find_first("name = 'Summit'")
+    @signals37.clients_of_firm.delete(summit)
+    assert_equal 1, @signals37.clients_of_firm.size
+    assert_equal 1, @signals37.clients_of_firm(true).size
+    assert_equal 2, summit.client_of
+  end
+
+  def test_deleting_type_mismatch
+    david = Developer.find(1)
+    david.projects.id
+    assert_raises(ActiveRecord::AssociationTypeMismatch) { david.projects.delete(1) }
+  end
+
+  def test_deleting_self_type_mismatch
+    david = Developer.find(1)
+    david.projects.id
+    assert_raises(ActiveRecord::AssociationTypeMismatch) { david.projects.delete(Project.find(1).developers) }
+  end
+
+  def test_destroy_all
+    force_signal37_to_load_all_clients_of_firm
+    assert !@signals37.clients_of_firm.empty?, "37signals has clients after load"
+    @signals37.clients_of_firm.destroy_all
+    assert @signals37.clients_of_firm.empty?, "37signals has no clients after destroy all"
+    assert @signals37.clients_of_firm(true).empty?, "37signals has no clients after destroy all and refresh"
+  end
+
+  def test_dependence
+    assert_equal 2, Client.find_all.length
+    Firm.find_first.destroy
+    assert_equal 0, Client.find_all.length
+  end
+
+  def test_dependence_with_transaction_support_on_failure
+    assert_equal 2, Client.find_all.length
+    firm = Firm.find_first
+    clients = firm.clients
+    clients.last.instance_eval { def before_destroy() raise "Trigger rollback" end }
+
+    firm.destroy rescue "do nothing"
+
+    assert_equal 2, Client.find_all.length
+  end
+
+  def test_dependence_on_account
+    assert_equal 2, Account.find_all.length
+    @signals37.destroy
+    assert_equal 1, Account.find_all.length
+  end
+
+  def test_included_in_collection
+    assert @signals37.clients.include?(Client.find(2))
+  end
+
+  def test_adding_array_and_collection
+    assert_nothing_raised { Firm.find_first.clients + Firm.find_all.last.clients }
+  end
+end
+
+class BelongsToAssociationsTest < Test::Unit::TestCase
+  def setup
+    create_fixtures "accounts", "companies", "accounts", "developers", "projects", "developers_projects", "topics"
+    @signals37 = Firm.find(1)
+  end
+
+  def test_belongs_to
+    Client.find(3).firm.name
+    assert_equal @signals37.name, Client.find(3).firm.name
+    assert !Client.find(3).firm.nil?, "Microsoft should have a firm"   
+  end
+
+  def test_type_mismatch
+    assert_raise(ActiveRecord::AssociationTypeMismatch) { Account.find(1).firm = 1 }
+    assert_raise(ActiveRecord::AssociationTypeMismatch) { Account.find(1).firm = Project.find(1) }
+  end
+
+  def test_natural_assignment
+    apple = Firm.create("name" => "Apple")
+    citibank = Account.create("credit_limit" => 10)
+    citibank.firm = apple
+    assert_equal apple.id, citibank.firm_id
+  end
+  
+  def test_natural_assignment_to_nil
+    client = Client.find(3)
+    client.firm = nil
+    client.save
+    assert_nil client.firm(true)
+    assert_nil client.client_of
+  end
+  
+  def test_with_different_class_name
+    assert_equal Company.find(1).name, Company.find(3).firm_with_other_name.name
+    assert_not_nil Company.find(3).firm_with_other_name, "Microsoft should have a firm"
+  end
+
+  def test_with_condition
+    assert_equal Company.find(1).name, Company.find(3).firm_with_condition.name
+    assert_not_nil Company.find(3).firm_with_condition, "Microsoft should have a firm"
+  end
+  
+  def test_belongs_to_counter
+    debate = Topic.create("title" => "debate")
+    assert_equal 0, debate.send(:read_attribute, "replies_count"), "No replies yet"
+
+    trash = debate.replies.create("title" => "blah!", "content" => "world around!")
+    assert_equal 1, Topic.find(debate.id).send(:read_attribute, "replies_count"), "First reply created"
+
+    trash.destroy
+    assert_equal 0, Topic.find(debate.id).send(:read_attribute, "replies_count"), "First reply deleted"
+  end
+
+  def xtest_counter_cache
+    apple = Firm.create("name" => "Apple")
+    final_cut = apple.clients.create("name" => "Final Cut")
+
+    apple.clients.to_s
+    assert_equal 1, apple.clients.size, "Created one client"
+    
+    apple.companies_count = 2
+    apple.save
+
+    apple = Firm.find_first("name = 'Apple'")
+    assert_equal 2, apple.clients.size, "Should use the new cached number"
+
+    apple.clients.to_s 
+    assert_equal 1, apple.clients.size, "Should not use the cached number, but go to the database"
+  end
+end
+
+
+class HasAndBelongsToManyAssociationsTest < Test::Unit::TestCase
+  def setup
+    @accounts, @companies, @developers, @projects, @developers_projects = 
+      create_fixtures "accounts", "companies", "developers", "projects", "developers_projects"
+
+    @signals37 = Firm.find(1)
+  end
+  
+  def test_has_and_belongs_to_many
+    david = Developer.find(1)
+
+    assert !david.projects.empty?
+    assert_equal 2, david.projects.size
+
+    active_record = Project.find(1)
+    assert !active_record.developers.empty?
+    assert_equal 2, active_record.developers.size
+    assert_equal david.name, active_record.developers.first.name
+  end
+  
+  def test_adding_single
+    jamis = Developer.find(2)
+    jamis.projects.id # causing the collection to load 
+    action_controller = Project.find(2)
+    assert_equal 1, jamis.projects.size
+    assert_equal 1, action_controller.developers.size    
+    
+    jamis.projects << action_controller
+
+    assert_equal 2, jamis.projects.size
+    assert_equal 2, jamis.projects(true).size
+    assert_equal 2, action_controller.developers(true).size
+  end
+
+  def test_adding_type_mismatch
+    jamis = Developer.find(2)
+    assert_raise(ActiveRecord::AssociationTypeMismatch) { jamis.projects << nil }
+    assert_raise(ActiveRecord::AssociationTypeMismatch) { jamis.projects << 1 }
+  end
+
+  def test_adding_from_the_project
+    jamis = Developer.find(2)
+    action_controller = Project.find(2)
+    action_controller.developers.id
+    assert_equal 1, jamis.projects.size
+    assert_equal 1, action_controller.developers.size
+
+    action_controller.developers << jamis 
+    
+    assert_equal 2, jamis.projects(true).size
+    assert_equal 2, action_controller.developers.size
+    assert_equal 2, action_controller.developers(true).size
+  end
+
+  def test_adding_multiple
+    aridridel = Developer.new("name" => "Aridridel")
+    aridridel.save
+    aridridel.projects.id
+    aridridel.projects.push(Project.find(1), Project.find(2))
+    assert_equal 2, aridridel.projects.size
+    assert_equal 2, aridridel.projects(true).size
+  end
+
+  def test_adding_a_collection
+    aridridel = Developer.new("name" => "Aridridel")
+    aridridel.save
+    aridridel.projects.id
+    aridridel.projects.concat([Project.find(1), Project.find(2)])
+    assert_equal 2, aridridel.projects.size
+    assert_equal 2, aridridel.projects(true).size
+  end
+  
+  def test_uniq_after_the_fact
+    @developers["jamis"].find.projects << @projects["active_record"].find
+    @developers["jamis"].find.projects << @projects["active_record"].find
+    assert_equal 3, @developers["jamis"].find.projects.size
+    assert_equal 1, @developers["jamis"].find.projects.uniq.size
+  end
+
+  def test_uniq_before_the_fact
+    @projects["active_record"].find.developers << @developers["jamis"].find
+    @projects["active_record"].find.developers << @developers["david"].find
+    assert_equal 2, @projects["active_record"].find.developers.size
+  end
+  
+  def test_deleting
+    david = Developer.find(1)
+    active_record = Project.find(1)
+    david.projects.id
+    assert_equal 2, david.projects.size
+    assert_equal 2, active_record.developers.size
+
+    david.projects.delete(active_record)
+    
+    assert_equal 1, david.projects.size
+    assert_equal 1, david.projects(true).size
+    assert_equal 1, active_record.developers(true).size
+  end
+
+  def test_deleting_array
+    david = Developer.find(1)
+    david.projects.id
+    david.projects.delete(Project.find_all)
+    assert_equal 0, david.projects.size
+    assert_equal 0, david.projects(true).size
+  end
+
+  def test_deleting_all
+    david = Developer.find(1)
+    david.projects.id
+    david.projects.clear
+    assert_equal 0, david.projects.size
+    assert_equal 0, david.projects(true).size
+  end
+
+  def test_removing_associations_on_destroy
+    Developer.find(1).destroy
+    assert Developer.connection.select_all("SELECT * FROM developers_projects WHERE developer_id = '1'").empty?
+  end
+  
+  def test_additional_columns_from_join_table
+    assert_equal Date.new(2004, 10, 10).to_s, Developer.find(1).projects.first.joined_on.to_s
+  end
+  
+  def test_destroy_all
+    david = Developer.find(1)
+    david.projects.id
+    assert !david.projects.empty?
+    david.projects.destroy_all
+    assert david.projects.empty?
+    assert david.projects(true).empty?
+  end
+
+  def test_rich_association
+    @jamis = @developers["jamis"].find
+    @jamis.projects.push_with_attributes(@projects["action_controller"].find, :joined_on => Date.today)
+    assert_equal Date.today.to_s, @jamis.projects.select { |p| p.name == @projects["action_controller"]["name"] }.first.joined_on.to_s
+    assert_equal Date.today.to_s, @developers["jamis"].find.projects.select { |p| p.name == @projects["action_controller"]["name"] }.first.joined_on.to_s
+  end
+
+  def test_associations_with_conditions
+    assert_equal 2, @projects["active_record"].find.developers.size
+    assert_equal 1, @projects["active_record"].find.developers_named_david.size
+    
+    @projects["active_record"].find.developers_named_david.clear
+    assert_equal 1, @projects["active_record"].find.developers.size
+  end
+  
+  def test_find_in_association
+    # Using sql
+    assert_equal @developers["david"].find, @projects["active_record"].find.developers.find(@developers["david"]["id"]), "SQL find"
+    
+    # Using ruby
+    @active_record = @projects["active_record"].find
+    @active_record.developers.reload
+    assert_equal @developers["david"].find, @active_record.developers.find(@developers["david"]["id"]), "Ruby find"
+  end
+end