Move tests to cases

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8660 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 650 insertions, 0 deletions

diff --git a/activerecord/test/cases/finder_test.rb b/activerecord/test/cases/finder_test.rb
new file mode 100644
index 0000000000..14f494776c
--- /dev/null
+++ b/activerecord/test/cases/finder_test.rb
@@ -0,0 +1,650 @@
+require 'abstract_unit'
+require 'fixtures/author'
+require 'fixtures/comment'
+require 'fixtures/company'
+require 'fixtures/topic'
+require 'fixtures/reply'
+require 'fixtures/entrant'
+require 'fixtures/developer'
+require 'fixtures/post'
+
+class FinderTest < ActiveSupport::TestCase
+  fixtures :companies, :topics, :entrants, :developers, :developers_projects, :posts, :comments, :accounts, :authors
+
+  def test_find
+    assert_equal(topics(:first).title, Topic.find(1).title)
+  end
+
+  # find should handle strings that come from URLs
+  # (example: Category.find(params[:id]))
+  def test_find_with_string
+    assert_equal(Topic.find(1).title,Topic.find("1").title)
+  end
+
+  def test_exists
+    assert Topic.exists?(1)
+    assert Topic.exists?("1")
+    assert Topic.exists?(:author_name => "David")
+    assert Topic.exists?(:author_name => "Mary", :approved => true)
+    assert Topic.exists?(["parent_id = ?", 1])
+    assert !Topic.exists?(45)
+
+    begin
+      assert !Topic.exists?("foo")
+    rescue ActiveRecord::StatementInvalid
+      # PostgreSQL complains about string comparison with integer field
+    rescue Exception
+      flunk
+    end
+
+    assert_raise(NoMethodError) { Topic.exists?([1,2]) }
+  end
+
+  def test_find_by_array_of_one_id
+    assert_kind_of(Array, Topic.find([ 1 ]))
+    assert_equal(1, Topic.find([ 1 ]).length)
+  end
+
+  def test_find_by_ids
+    assert_equal 2, Topic.find(1, 2).size
+    assert_equal topics(:second).title, Topic.find([2]).first.title
+  end
+
+  def test_find_by_ids_with_limit_and_offset
+    assert_equal 2, Entrant.find([1,3,2], :limit => 2).size
+    assert_equal 1, Entrant.find([1,3,2], :limit => 3, :offset => 2).size
+
+    # Also test an edge case: If you have 11 results, and you set a
+    #   limit of 3 and offset of 9, then you should find that there
+    #   will be only 2 results, regardless of the limit.
+    devs = Developer.find :all
+    last_devs = Developer.find devs.map(&:id), :limit => 3, :offset => 9
+    assert_equal 2, last_devs.size
+  end
+
+  def test_find_an_empty_array
+    assert_equal [], Topic.find([])
+  end
+
+  def test_find_by_ids_missing_one
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, 2, 45) }
+  end
+
+  def test_find_all_with_limit
+    entrants = Entrant.find(:all, :order => "id ASC", :limit => 2)
+
+    assert_equal(2, entrants.size)
+    assert_equal(entrants(:first).name, entrants.first.name)
+  end
+
+  def test_find_all_with_prepared_limit_and_offset
+    entrants = Entrant.find(:all, :order => "id ASC", :limit => 2, :offset => 1)
+
+    assert_equal(2, entrants.size)
+    assert_equal(entrants(:second).name, entrants.first.name)
+
+    entrants = Entrant.find(:all, :order => "id ASC", :limit => 2, :offset => 2)
+    assert_equal(1, entrants.size)
+    assert_equal(entrants(:third).name, entrants.first.name)
+  end
+
+  def test_find_all_with_limit_and_offset_and_multiple_orderings
+    developers = Developer.find(:all, :order => "salary ASC, id DESC", :limit => 3, :offset => 1)
+    assert_equal ["David", "fixture_10", "fixture_9"], developers.collect {|d| d.name}
+  end
+
+  def test_find_with_limit_and_condition
+    developers = Developer.find(:all, :order => "id DESC", :conditions => "salary = 100000", :limit => 3, :offset =>7)
+    assert_equal(1, developers.size)
+    assert_equal("fixture_3", developers.first.name)
+  end
+
+  def test_find_with_entire_select_statement
+    topics = Topic.find_by_sql "SELECT * FROM topics WHERE author_name = 'Mary'"
+
+    assert_equal(1, topics.size)
+    assert_equal(topics(:second).title, topics.first.title)
+  end
+
+  def test_find_with_prepared_select_statement
+    topics = Topic.find_by_sql ["SELECT * FROM topics WHERE author_name = ?", "Mary"]
+
+    assert_equal(1, topics.size)
+    assert_equal(topics(:second).title, topics.first.title)
+  end
+
+  def test_find_by_sql_with_sti_on_joined_table
+    accounts = Account.find_by_sql("SELECT * FROM accounts INNER JOIN companies ON companies.id = accounts.firm_id")
+    assert_equal [Account], accounts.collect(&:class).uniq
+  end
+
+  def test_find_first
+    first = Topic.find(:first, :conditions => "title = 'The First Topic'")
+    assert_equal(topics(:first).title, first.title)
+  end
+
+  def test_find_first_failing
+    first = Topic.find(:first, :conditions => "title = 'The First Topic!'")
+    assert_nil(first)
+  end
+
+  def test_unexisting_record_exception_handling
+    assert_raises(ActiveRecord::RecordNotFound) {
+      Topic.find(1).parent
+    }
+
+    Topic.find(2).topic
+  end
+
+  def test_find_only_some_columns
+    topic = Topic.find(1, :select => "author_name")
+    assert_raises(ActiveRecord::MissingAttributeError) {topic.title}
+    assert_equal "David", topic.author_name
+    assert !topic.attribute_present?("title")
+    #assert !topic.respond_to?("title")
+    assert topic.attribute_present?("author_name")
+    assert topic.respond_to?("author_name")
+  end
+
+  def test_find_on_blank_conditions
+    [nil, " ", [], {}].each do |blank|
+      assert_nothing_raised { Topic.find(:first, :conditions => blank) }
+    end
+  end
+
+  def test_find_on_blank_bind_conditions
+    [ [""], ["",{}] ].each do |blank|
+      assert_nothing_raised { Topic.find(:first, :conditions => blank) }
+    end
+  end
+
+  def test_find_on_array_conditions
+    assert Topic.find(1, :conditions => ["approved = ?", false])
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => ["approved = ?", true]) }
+  end
+
+  def test_find_on_hash_conditions
+    assert Topic.find(1, :conditions => { :approved => false })
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { :approved => true }) }
+  end
+
+  def test_find_on_hash_conditions_with_explicit_table_name
+    assert Topic.find(1, :conditions => { 'topics.approved' => false })
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { 'topics.approved' => true }) }
+  end
+
+  def test_find_on_association_proxy_conditions
+    assert_equal [1, 2, 3, 5, 6, 7, 8, 9, 10], Comment.find_all_by_post_id(authors(:david).posts).map(&:id).sort
+  end
+
+  def test_find_on_hash_conditions_with_range
+    assert_equal [1,2], Topic.find(:all, :conditions => { :id => 1..2 }).map(&:id).sort
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { :id => 2..3 }) }
+  end
+
+  def test_find_on_hash_conditions_with_multiple_ranges
+    assert_equal [1,2,3], Comment.find(:all, :conditions => { :id => 1..3, :post_id => 1..2 }).map(&:id).sort
+    assert_equal [1], Comment.find(:all, :conditions => { :id => 1..1, :post_id => 1..10 }).map(&:id).sort
+  end
+
+  def test_find_on_multiple_hash_conditions
+    assert Topic.find(1, :conditions => { :author_name => "David", :title => "The First Topic", :replies_count => 1, :approved => false })
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { :author_name => "David", :title => "The First Topic", :replies_count => 1, :approved => true }) }
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { :author_name => "David", :title => "HHC", :replies_count => 1, :approved => false }) }
+    assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { :author_name => "David", :title => "The First Topic", :replies_count => 1, :approved => true }) }
+  end
+
+
+  def test_condition_interpolation
+    assert_kind_of Firm, Company.find(:first, :conditions => ["name = '%s'", "37signals"])
+    assert_nil Company.find(:first, :conditions => ["name = '%s'", "37signals!"])
+    assert_nil Company.find(:first, :conditions => ["name = '%s'", "37signals!' OR 1=1"])
+    assert_kind_of Time, Topic.find(:first, :conditions => ["id = %d", 1]).written_on
+  end
+
+  def test_condition_array_interpolation
+    assert_kind_of Firm, Company.find(:first, :conditions => ["name = '%s'", "37signals"])
+    assert_nil Company.find(:first, :conditions => ["name = '%s'", "37signals!"])
+    assert_nil Company.find(:first, :conditions => ["name = '%s'", "37signals!' OR 1=1"])
+    assert_kind_of Time, Topic.find(:first, :conditions => ["id = %d", 1]).written_on
+  end
+
+  def test_condition_hash_interpolation
+    assert_kind_of Firm, Company.find(:first, :conditions => { :name => "37signals"})
+    assert_nil Company.find(:first, :conditions => { :name => "37signals!"})
+    assert_kind_of Time, Topic.find(:first, :conditions => {:id => 1}).written_on
+  end
+
+  def test_hash_condition_find_malformed
+    assert_raises(ActiveRecord::StatementInvalid) {
+      Company.find(:first, :conditions => { :id => 2, :dhh => true })
+    }
+  end
+
+  def test_hash_condition_find_with_escaped_characters
+    Company.create("name" => "Ain't noth'n like' \#stuff")
+    assert Company.find(:first, :conditions => { :name => "Ain't noth'n like' \#stuff" })
+  end
+
+  def test_hash_condition_find_with_array
+    p1, p2 = Post.find(:all, :limit => 2, :order => 'id asc')
+    assert_equal [p1, p2], Post.find(:all, :conditions => { :id => [p1, p2] }, :order => 'id asc')
+    assert_equal [p1, p2], Post.find(:all, :conditions => { :id => [p1, p2.id] }, :order => 'id asc')
+  end
+
+  def test_hash_condition_find_with_nil
+    topic = Topic.find(:first, :conditions => { :last_read => nil } )
+    assert_not_nil topic
+    assert_nil topic.last_read
+  end
+
+  def test_bind_variables
+    assert_kind_of Firm, Company.find(:first, :conditions => ["name = ?", "37signals"])
+    assert_nil Company.find(:first, :conditions => ["name = ?", "37signals!"])
+    assert_nil Company.find(:first, :conditions => ["name = ?", "37signals!' OR 1=1"])
+    assert_kind_of Time, Topic.find(:first, :conditions => ["id = ?", 1]).written_on
+    assert_raises(ActiveRecord::PreparedStatementInvalid) {
+      Company.find(:first, :conditions => ["id=? AND name = ?", 2])
+    }
+    assert_raises(ActiveRecord::PreparedStatementInvalid) {
+	   Company.find(:first, :conditions => ["id=?", 2, 3, 4])
+    }
+  end
+
+  def test_bind_variables_with_quotes
+    Company.create("name" => "37signals' go'es agains")
+    assert Company.find(:first, :conditions => ["name = ?", "37signals' go'es agains"])
+  end
+
+  def test_named_bind_variables_with_quotes
+    Company.create("name" => "37signals' go'es agains")
+    assert Company.find(:first, :conditions => ["name = :name", {:name => "37signals' go'es agains"}])
+  end
+
+  def test_bind_arity
+    assert_nothing_raised                                 { bind '' }
+    assert_raises(ActiveRecord::PreparedStatementInvalid) { bind '', 1 }
+
+    assert_raises(ActiveRecord::PreparedStatementInvalid) { bind '?' }
+    assert_nothing_raised                                 { bind '?', 1 }
+    assert_raises(ActiveRecord::PreparedStatementInvalid) { bind '?', 1, 1  }
+  end
+
+  def test_named_bind_variables
+    assert_equal '1', bind(':a', :a => 1) # ' ruby-mode
+    assert_equal '1 1', bind(':a :a', :a => 1)  # ' ruby-mode
+
+    assert_kind_of Firm, Company.find(:first, :conditions => ["name = :name", { :name => "37signals" }])
+    assert_nil Company.find(:first, :conditions => ["name = :name", { :name => "37signals!" }])
+    assert_nil Company.find(:first, :conditions => ["name = :name", { :name => "37signals!' OR 1=1" }])
+    assert_kind_of Time, Topic.find(:first, :conditions => ["id = :id", { :id => 1 }]).written_on
+  end
+
+  def test_bind_enumerable
+    quoted_abc = %(#{ActiveRecord::Base.connection.quote('a')},#{ActiveRecord::Base.connection.quote('b')},#{ActiveRecord::Base.connection.quote('c')})
+
+    assert_equal '1,2,3', bind('?', [1, 2, 3])
+    assert_equal quoted_abc, bind('?', %w(a b c))
+
+    assert_equal '1,2,3', bind(':a', :a => [1, 2, 3])
+    assert_equal quoted_abc, bind(':a', :a => %w(a b c)) # '
+
+    require 'set'
+    assert_equal '1,2,3', bind('?', Set.new([1, 2, 3]))
+    assert_equal quoted_abc, bind('?', Set.new(%w(a b c)))
+
+    assert_equal '1,2,3', bind(':a', :a => Set.new([1, 2, 3]))
+    assert_equal quoted_abc, bind(':a', :a => Set.new(%w(a b c))) # '
+  end
+
+  def test_bind_empty_enumerable
+    quoted_nil = ActiveRecord::Base.connection.quote(nil)
+    assert_equal quoted_nil, bind('?', [])
+    assert_equal " in (#{quoted_nil})", bind(' in (?)', [])
+    assert_equal "foo in (#{quoted_nil})", bind('foo in (?)', [])
+  end
+
+  def test_bind_string
+    assert_equal ActiveRecord::Base.connection.quote(''), bind('?', '')
+  end
+
+  def test_bind_record
+    o = Struct.new(:quoted_id).new(1)
+    assert_equal '1', bind('?', o)
+
+    os = [o] * 3
+    assert_equal '1,1,1', bind('?', os)
+  end
+
+  def test_string_sanitation
+    assert_not_equal "#{ActiveRecord::Base.connection.quoted_string_prefix}'something ' 1=1'", ActiveRecord::Base.sanitize("something ' 1=1")
+    assert_equal "#{ActiveRecord::Base.connection.quoted_string_prefix}'something; select table'", ActiveRecord::Base.sanitize("something; select table")
+  end
+
+  def test_count
+    assert_equal(0, Entrant.count(:conditions => "id > 3"))
+    assert_equal(1, Entrant.count(:conditions => ["id > ?", 2]))
+    assert_equal(2, Entrant.count(:conditions => ["id > ?", 1]))
+  end
+
+  def test_count_by_sql
+    assert_equal(0, Entrant.count_by_sql("SELECT COUNT(*) FROM entrants WHERE id > 3"))
+    assert_equal(1, Entrant.count_by_sql(["SELECT COUNT(*) FROM entrants WHERE id > ?", 2]))
+    assert_equal(2, Entrant.count_by_sql(["SELECT COUNT(*) FROM entrants WHERE id > ?", 1]))
+  end
+
+  def test_find_by_one_attribute
+    assert_equal topics(:first), Topic.find_by_title("The First Topic")
+    assert_nil Topic.find_by_title("The First Topic!")
+  end
+
+  def test_find_by_one_attribute_caches_dynamic_finder
+    # ensure this test can run independently of order
+    class << Topic; self; end.send(:remove_method, :find_by_title) if Topic.respond_to?(:find_by_title)
+    assert !Topic.respond_to?(:find_by_title)
+    t = Topic.find_by_title("The First Topic")
+    assert Topic.respond_to?(:find_by_title)
+  end
+
+  def test_dynamic_finder_returns_same_results_after_caching
+    # ensure this test can run independently of order
+    class << Topic; self; end.send(:remove_method, :find_by_title) if Topic.respond_to?(:find_by_title)
+    t = Topic.find_by_title("The First Topic")
+    assert_equal t, Topic.find_by_title("The First Topic") # find_by_title has been cached
+  end
+
+  def test_find_by_one_attribute_with_order_option
+    assert_equal accounts(:signals37), Account.find_by_credit_limit(50, :order => 'id')
+    assert_equal accounts(:rails_core_account), Account.find_by_credit_limit(50, :order => 'id DESC')
+  end
+
+  def test_find_by_one_attribute_with_conditions
+    assert_equal accounts(:rails_core_account), Account.find_by_credit_limit(50, :conditions => ['firm_id = ?', 6])
+  end
+
+  def test_dynamic_finder_on_one_attribute_with_conditions_caches_method
+    # ensure this test can run independently of order
+    class << Account; self; end.send(:remove_method, :find_by_credit_limit) if Account.respond_to?(:find_by_credit_limit)
+    assert !Account.respond_to?(:find_by_credit_limit)
+    a = Account.find_by_credit_limit(50, :conditions => ['firm_id = ?', 6])
+    assert Account.respond_to?(:find_by_credit_limit)
+  end
+
+  def test_dynamic_finder_on_one_attribute_with_conditions_returns_same_results_after_caching
+    # ensure this test can run independently of order
+    class << Account; self; end.send(:remove_method, :find_by_credit_limit) if Account.respond_to?(:find_by_credit_limit)
+    a = Account.find_by_credit_limit(50, :conditions => ['firm_id = ?', 6])
+    assert_equal a, Account.find_by_credit_limit(50, :conditions => ['firm_id = ?', 6]) # find_by_credit_limit has been cached
+  end
+
+  def test_find_by_one_attribute_with_several_options
+    assert_equal accounts(:unknown), Account.find_by_credit_limit(50, :order => 'id DESC', :conditions => ['id != ?', 3])
+  end
+
+  def test_find_by_one_missing_attribute
+    assert_raises(NoMethodError) { Topic.find_by_undertitle("The First Topic!") }
+  end
+
+  def test_find_by_invalid_method_syntax
+    assert_raises(NoMethodError) { Topic.fail_to_find_by_title("The First Topic") }
+    assert_raises(NoMethodError) { Topic.find_by_title?("The First Topic") }
+    assert_raises(NoMethodError) { Topic.fail_to_find_or_create_by_title("Nonexistent Title") }
+    assert_raises(NoMethodError) { Topic.find_or_create_by_title?("Nonexistent Title") }
+  end
+
+  def test_find_by_two_attributes
+    assert_equal topics(:first), Topic.find_by_title_and_author_name("The First Topic", "David")
+    assert_nil Topic.find_by_title_and_author_name("The First Topic", "Mary")
+  end
+
+  def test_find_all_by_one_attribute
+    topics = Topic.find_all_by_content("Have a nice day")
+    assert_equal 2, topics.size
+    assert topics.include?(topics(:first))
+
+    assert_equal [], Topic.find_all_by_title("The First Topic!!")
+  end
+
+  def test_find_all_by_one_attribute_with_options
+    topics = Topic.find_all_by_content("Have a nice day", :order => "id DESC")
+    assert topics(:first), topics.last
+
+    topics = Topic.find_all_by_content("Have a nice day", :order => "id")
+    assert topics(:first), topics.first
+  end
+
+  def test_find_all_by_array_attribute
+    assert_equal 2, Topic.find_all_by_title(["The First Topic", "The Second Topic's of the day"]).size
+  end
+
+  def test_find_all_by_boolean_attribute
+    topics = Topic.find_all_by_approved(false)
+    assert_equal 1, topics.size
+    assert topics.include?(topics(:first))
+
+    topics = Topic.find_all_by_approved(true)
+    assert_equal 1, topics.size
+    assert topics.include?(topics(:second))
+  end
+
+  def test_find_by_nil_attribute
+    topic = Topic.find_by_last_read nil
+    assert_not_nil topic
+    assert_nil topic.last_read
+  end
+
+  def test_find_all_by_nil_attribute
+    topics = Topic.find_all_by_last_read nil
+    assert_equal 1, topics.size
+    assert_nil topics[0].last_read
+  end
+
+  def test_find_by_nil_and_not_nil_attributes
+    topic = Topic.find_by_last_read_and_author_name nil, "Mary"
+    assert_equal "Mary", topic.author_name
+  end
+
+  def test_find_all_by_nil_and_not_nil_attributes
+    topics = Topic.find_all_by_last_read_and_author_name nil, "Mary"
+    assert_equal 1, topics.size
+    assert_equal "Mary", topics[0].author_name
+  end
+
+  def test_find_or_create_from_one_attribute
+    number_of_companies = Company.count
+    sig38 = Company.find_or_create_by_name("38signals")
+    assert_equal number_of_companies + 1, Company.count
+    assert_equal sig38, Company.find_or_create_by_name("38signals")
+    assert !sig38.new_record?
+  end
+
+  def test_find_or_create_from_two_attributes
+    number_of_topics = Topic.count
+    another = Topic.find_or_create_by_title_and_author_name("Another topic","John")
+    assert_equal number_of_topics + 1, Topic.count
+    assert_equal another, Topic.find_or_create_by_title_and_author_name("Another topic", "John")
+    assert !another.new_record?
+  end
+
+  def test_find_or_create_from_one_attribute_and_hash
+    number_of_companies = Company.count
+    sig38 = Company.find_or_create_by_name({:name => "38signals", :firm_id => 17, :client_of => 23})
+    assert_equal number_of_companies + 1, Company.count
+    assert_equal sig38, Company.find_or_create_by_name({:name => "38signals", :firm_id => 17, :client_of => 23})
+    assert !sig38.new_record?
+    assert_equal "38signals", sig38.name
+    assert_equal 17, sig38.firm_id
+    assert_equal 23, sig38.client_of
+  end
+
+  def test_find_or_initialize_from_one_attribute
+    sig38 = Company.find_or_initialize_by_name("38signals")
+    assert_equal "38signals", sig38.name
+    assert sig38.new_record?
+  end
+
+  def test_find_or_initialize_from_one_attribute_should_set_attribute_even_when_protected
+    c = Company.find_or_initialize_by_name_and_rating("Fortune 1000", 1000)
+    assert_equal "Fortune 1000", c.name
+    assert_equal 1000, c.rating
+    assert c.valid?
+    assert c.new_record?
+  end
+
+  def test_find_or_create_from_one_attribute_should_set_attribute_even_when_protected
+    c = Company.find_or_create_by_name_and_rating("Fortune 1000", 1000)
+    assert_equal "Fortune 1000", c.name
+    assert_equal 1000, c.rating
+    assert c.valid?
+    assert !c.new_record?
+  end
+
+  def test_dynamic_find_or_initialize_from_one_attribute_caches_method
+    class << Company; self; end.send(:remove_method, :find_or_initialize_by_name) if Company.respond_to?(:find_or_initialize_by_name)
+    assert !Company.respond_to?(:find_or_initialize_by_name)
+    sig38 = Company.find_or_initialize_by_name("38signals")
+    assert Company.respond_to?(:find_or_initialize_by_name)
+  end
+
+  def test_find_or_initialize_from_two_attributes
+    another = Topic.find_or_initialize_by_title_and_author_name("Another topic","John")
+    assert_equal "Another topic", another.title
+    assert_equal "John", another.author_name
+    assert another.new_record?
+  end
+
+  def test_find_or_initialize_from_one_attribute_and_hash
+    sig38 = Company.find_or_initialize_by_name({:name => "38signals", :firm_id => 17, :client_of => 23})
+    assert_equal "38signals", sig38.name
+    assert_equal 17, sig38.firm_id
+    assert_equal 23, sig38.client_of
+    assert sig38.new_record?
+  end
+
+  def test_find_with_bad_sql
+    assert_raises(ActiveRecord::StatementInvalid) { Topic.find_by_sql "select 1 from badtable" }
+  end
+
+  def test_find_with_invalid_params
+    assert_raises(ArgumentError) { Topic.find :first, :join => "It should be `joins'" }
+    assert_raises(ArgumentError) { Topic.find :first, :conditions => '1 = 1', :join => "It should be `joins'" }
+  end
+
+  def test_dynamic_finder_with_invalid_params
+    assert_raises(ArgumentError) { Topic.find_by_title 'No Title', :join => "It should be `joins'" }
+  end
+
+  def test_find_all_with_limit
+    first_five_developers = Developer.find :all, :order => 'id ASC', :limit =>  5
+    assert_equal 5, first_five_developers.length
+    assert_equal 'David', first_five_developers.first.name
+    assert_equal 'fixture_5', first_five_developers.last.name
+
+    no_developers = Developer.find :all, :order => 'id ASC', :limit => 0
+    assert_equal 0, no_developers.length
+  end
+
+  def test_find_all_with_limit_and_offset
+    first_three_developers = Developer.find :all, :order => 'id ASC', :limit => 3, :offset => 0
+    second_three_developers = Developer.find :all, :order => 'id ASC', :limit => 3, :offset => 3
+    last_two_developers = Developer.find :all, :order => 'id ASC', :limit => 2, :offset => 8
+
+    assert_equal 3, first_three_developers.length
+    assert_equal 3, second_three_developers.length
+    assert_equal 2, last_two_developers.length
+
+    assert_equal 'David', first_three_developers.first.name
+    assert_equal 'fixture_4', second_three_developers.first.name
+    assert_equal 'fixture_9', last_two_developers.first.name
+  end
+
+  def test_find_all_with_limit_and_offset_and_multiple_order_clauses
+    first_three_posts = Post.find :all, :order => 'author_id, id', :limit => 3, :offset => 0
+    second_three_posts = Post.find :all, :order => ' author_id,id ', :limit => 3, :offset => 3
+    last_posts = Post.find :all, :order => ' author_id, id  ', :limit => 3, :offset => 6
+
+    assert_equal [[0,3],[1,1],[1,2]], first_three_posts.map { |p| [p.author_id, p.id] }
+    assert_equal [[1,4],[1,5],[1,6]], second_three_posts.map { |p| [p.author_id, p.id] }
+    assert_equal [[2,7]], last_posts.map { |p| [p.author_id, p.id] }
+  end
+
+  def test_find_all_with_join
+    developers_on_project_one = Developer.find(
+      :all,
+      :joins => 'LEFT JOIN developers_projects ON developers.id = developers_projects.developer_id',
+      :conditions => 'project_id=1'
+    )
+    assert_equal 3, developers_on_project_one.length
+    developer_names = developers_on_project_one.map { |d| d.name }
+    assert developer_names.include?('David')
+    assert developer_names.include?('Jamis')
+  end
+
+  def test_joins_dont_clobber_id
+    first = Firm.find(
+      :first,
+      :joins => 'INNER JOIN companies AS clients ON clients.firm_id = companies.id',
+      :conditions => 'companies.id = 1'
+    )
+    assert_equal 1, first.id
+  end
+
+  def test_find_by_id_with_conditions_with_or
+    assert_nothing_raised do
+      Post.find([1,2,3],
+        :conditions => "posts.id <= 3 OR posts.#{QUOTED_TYPE} = 'Post'")
+    end
+  end
+
+  # http://dev.rubyonrails.org/ticket/6778
+  def test_find_ignores_previously_inserted_record
+    post = Post.create!(:title => 'test', :body => 'it out')
+    assert_equal [], Post.find_all_by_id(nil)
+  end
+
+  def test_find_by_empty_ids
+    assert_equal [], Post.find([])
+  end
+
+  def test_find_by_empty_in_condition
+    assert_equal [], Post.find(:all, :conditions => ['id in (?)', []])
+  end
+
+  def test_find_by_records
+    p1, p2 = Post.find(:all, :limit => 2, :order => 'id asc')
+    assert_equal [p1, p2], Post.find(:all, :conditions => ['id in (?)', [p1, p2]], :order => 'id asc')
+    assert_equal [p1, p2], Post.find(:all, :conditions => ['id in (?)', [p1, p2.id]], :order => 'id asc')
+  end
+
+  def test_select_value
+    assert_equal "37signals", Company.connection.select_value("SELECT name FROM companies WHERE id = 1")
+    assert_nil Company.connection.select_value("SELECT name FROM companies WHERE id = -1")
+    # make sure we didn't break count...
+    assert_equal 0, Company.count_by_sql("SELECT COUNT(*) FROM companies WHERE name = 'Halliburton'")
+    assert_equal 1, Company.count_by_sql("SELECT COUNT(*) FROM companies WHERE name = '37signals'")
+  end
+
+  def test_select_values
+    assert_equal ["1","2","3","4","5","6","7","8","9"], Company.connection.select_values("SELECT id FROM companies ORDER BY id").map! { |i| i.to_s }
+    assert_equal ["37signals","Summit","Microsoft", "Flamboyant Software", "Ex Nihilo", "RailsCore", "Leetsoft", "Jadedpixel", "Odegy"], Company.connection.select_values("SELECT name FROM companies ORDER BY id")
+  end
+
+  def test_select_rows
+    assert_equal(
+      [["1", nil, nil, "37signals"],
+       ["2", "1", "2", "Summit"],
+       ["3", "1", "1", "Microsoft"]],
+      Company.connection.select_rows("SELECT id, firm_id, client_of, name FROM companies WHERE id IN (1,2,3) ORDER BY id").map! {|i| i.map! {|j| j.to_s unless j.nil?}})
+    assert_equal [["1", "37signals"], ["2", "Summit"], ["3", "Microsoft"]],
+      Company.connection.select_rows("SELECT id, name FROM companies WHERE id IN (1,2,3) ORDER BY id").map! {|i| i.map! {|j| j.to_s unless j.nil?}}
+  end
+
+  protected
+    def bind(statement, *vars)
+      if vars.first.is_a?(Hash)
+        ActiveRecord::Base.send(:replace_named_bind_variables, statement, vars.first)
+      else
+        ActiveRecord::Base.send(:replace_bind_variables, statement, vars)
+      end
+    end
+end