require 'abstract_unit' require 'fixtures/company' require 'fixtures/topic' Company.has_many :accounts class CalculationsTest < Test::Unit::TestCase fixtures :companies, :accounts, :topics def test_should_sum_field assert_equal 318, Account.sum(:credit_limit) end def test_should_average_field value = Account.average(:credit_limit) assert_kind_of Float, value assert_in_delta 53.0, value, 0.001 end def test_should_get_maximum_of_field assert_equal 60, Account.maximum(:credit_limit) end def test_should_get_maximum_of_field_with_include assert_equal 50, Account.maximum(:credit_limit, :include => :firm, :conditions => "companies.name != 'Summit'") end def test_should_get_maximum_of_field_with_scoped_include Account.with_scope :find => { :include => :firm, :conditions => "companies.name != 'Summit'" } do assert_equal 50, Account.maximum(:credit_limit) end end def test_should_get_minimum_of_field assert_equal 50, Account.minimum(:credit_limit) end def test_should_group_by_field c = Account.sum(:credit_limit, :group => :firm_id) [1,6,2].each { |firm_id| assert c.keys.include?(firm_id) } end def test_should_group_by_summed_field c = Account.sum(:credit_limit, :group => :firm_id) assert_equal 50, c[1] assert_equal 105, c[6] assert_equal 60, c[2] end def test_should_order_by_grouped_field c = Account.sum(:credit_limit, :group => :firm_id, :order => "firm_id") assert_equal [1, 2, 6, 9], c.keys.compact end def test_should_order_by_calculation c = Account.sum(:credit_limit, :group => :firm_id, :order => "sum_credit_limit desc, firm_id") assert_equal [105, 60, 53, 50, 50], c.keys.collect { |k| c[k] } assert_equal [6, 2, 9, 1], c.keys.compact end def test_should_limit_calculation c = Account.sum(:credit_limit, :conditions => "firm_id IS NOT NULL", :group => :firm_id, :order => "firm_id", :limit => 2) assert_equal [1, 2], c.keys.compact end def test_should_limit_calculation_with_offset c = Account.sum(:credit_limit, :conditions => "firm_id IS NOT NULL", :group => :firm_id, :order => "firm_id", :limit => 2, :offset => 1) assert_equal [2, 6], c.keys.compact end def test_should_group_by_summed_field_having_condition c = Account.sum(:credit_limit, :group => :firm_id, :having => 'sum(credit_limit) > 50') assert_nil c[1] assert_equal 105, c[6] assert_equal 60, c[2] end def test_should_group_by_summed_association c = Account.sum(:credit_limit, :group => :firm) assert_equal 50, c[companies(:first_firm)] assert_equal 105, c[companies(:rails_core)] assert_equal 60, c[companies(:first_client)] end def test_should_sum_field_with_conditions assert_equal 105, Account.sum(:credit_limit, :conditions => 'firm_id = 6') end def test_should_group_by_summed_field_with_conditions c = Account.sum(:credit_limit, :conditions => 'firm_id > 1', :group => :firm_id) assert_nil c[1] assert_equal 105, c[6] assert_equal 60, c[2] end def test_should_group_by_summed_field_with_conditions_and_having c = Account.sum(:credit_limit, :conditions => 'firm_id > 1', :group => :firm_id, :having => 'sum(credit_limit) > 60') assert_nil c[1] assert_equal 105, c[6] assert_nil c[2] end def test_should_group_by_fields_with_table_alias c = Account.sum(:credit_limit, :group => 'accounts.firm_id') assert_equal 50, c[1] assert_equal 105, c[6] assert_equal 60, c[2] end def test_should_calculate_with_invalid_field assert_equal 6, Account.calculate(:count, '*') assert_equal 6, Account.calculate(:count, :all) end def test_should_calculate_grouped_with_invalid_field c = Account.count(:all, :group => 'accounts.firm_id') assert_equal 1, c[1] assert_equal 2, c[6] assert_equal 1, c[2] end def test_should_calculate_grouped_association_with_invalid_field c = Account.count(:all, :group => :firm) assert_equal 1, c[companies(:first_firm)] assert_equal 2, c[companies(:rails_core)] assert_equal 1, c[companies(:first_client)] end def test_should_calculate_grouped_by_function c = Company.count(:all, :group => "UPPER(#{QUOTED_TYPE})") assert_equal 2, c[nil] assert_equal 1, c['DEPENDENTFIRM'] assert_equal 3, c['CLIENT'] assert_equal 2, c['FIRM'] end def test_should_calculate_grouped_by_function_with_table_alias c = Company.count(:all, :group => "UPPER(companies.#{QUOTED_TYPE})") assert_equal 2, c[nil] assert_equal 1, c['DEPENDENTFIRM'] assert_equal 3, c['CLIENT'] assert_equal 2, c['FIRM'] end def test_should_not_overshadow_enumerable_sum assert_equal 6, [1, 2, 3].sum(&:abs) end def test_should_sum_scoped_field assert_equal 15, companies(:rails_core).companies.sum(:id) end def test_should_sum_scoped_field_with_conditions assert_equal 8, companies(:rails_core).companies.sum(:id, :conditions => 'id > 7') end def test_should_group_by_scoped_field c = companies(:rails_core).companies.sum(:id, :group => :name) assert_equal 7, c['Leetsoft'] assert_equal 8, c['Jadedpixel'] end def test_should_group_by_summed_field_with_conditions_and_having c = companies(:rails_core).companies.sum(:id, :group => :name, :having => 'sum(id) > 7') assert_nil c['Leetsoft'] assert_equal 8, c['Jadedpixel'] end def test_should_reject_invalid_options assert_nothing_raised do [:count, :sum].each do |func| # empty options are valid Company.send(:validate_calculation_options, func) # these options are valid for all calculations [:select, :conditions, :joins, :order, :group, :having, :distinct].each do |opt| Company.send(:validate_calculation_options, func, opt => true) end end # :include is only valid on :count Company.send(:validate_calculation_options, :count, :include => true) end assert_raises(ArgumentError) { Company.send(:validate_calculation_options, :sum, :foo => :bar) } assert_raises(ArgumentError) { Company.send(:validate_calculation_options, :count, :foo => :bar) } end def test_should_count_selected_field_with_include assert_equal 6, Account.count(:distinct => true, :include => :firm) assert_equal 4, Account.count(:distinct => true, :include => :firm, :select => :credit_limit) end end