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require "cases/helper"
require 'models/company'
require "models/contract"
require 'models/topic'
require 'models/edge'
require 'models/club'
require 'models/organization'
Company.has_many :accounts
class NumericData < ActiveRecord::Base
self.table_name = 'numeric_data'
end
class CalculationsTest < ActiveRecord::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_equal 53.0, value
end
def test_should_return_decimal_average_of_integer_field
value = Account.average(:id)
assert_equal 3.5, value
end
def test_should_return_integer_average_if_db_returns_such
Account.connection.stubs :select_value => 3
value = Account.average(:id)
assert_equal 3, value
end
def test_should_return_nil_as_average
assert_nil NumericData.average(:bank_balance)
end
def test_type_cast_calculated_value_should_convert_db_averages_of_fixnum_class_to_decimal
assert_equal 0, NumericData.scoped.send(:type_cast_calculated_value, 0, nil, 'avg')
assert_equal 53.0, NumericData.scoped.send(:type_cast_calculated_value, 53, nil, 'avg')
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 55, Account.where("companies.name != 'Summit'").references(:companies).includes(:firm).maximum(:credit_limit)
end
def test_should_get_minimum_of_field
assert_equal 50, Account.minimum(:credit_limit)
end
def test_should_group_by_field
c = Account.group(:firm_id).sum(:credit_limit)
[1,6,2].each { |firm_id| assert c.keys.include?(firm_id) }
end
def test_should_group_by_multiple_fields
c = Account.group('firm_id', :credit_limit).count(:all)
[ [nil, 50], [1, 50], [6, 50], [6, 55], [9, 53], [2, 60] ].each { |firm_and_limit| assert c.keys.include?(firm_and_limit) }
end
def test_should_group_by_multiple_fields_having_functions
c = Topic.group(:author_name, 'COALESCE(type, title)').count(:all)
assert_equal 1, c[["Carl", "The Third Topic of the day"]]
assert_equal 1, c[["Mary", "Reply"]]
assert_equal 1, c[["David", "The First Topic"]]
assert_equal 1, c[["Carl", "Reply"]]
end
def test_should_group_by_summed_field
c = Account.group(:firm_id).sum(:credit_limit)
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.scoped(:group => :firm_id, :order => "firm_id").sum(:credit_limit)
assert_equal [1, 2, 6, 9], c.keys.compact
end
def test_should_order_by_calculation
c = Account.scoped(:group => :firm_id, :order => "sum_credit_limit desc, firm_id").sum(:credit_limit)
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.scoped(:where => "firm_id IS NOT NULL",
:group => :firm_id, :order => "firm_id", :limit => 2).sum(:credit_limit)
assert_equal [1, 2], c.keys.compact
end
def test_should_limit_calculation_with_offset
c = Account.scoped(:where => "firm_id IS NOT NULL", :group => :firm_id,
:order => "firm_id", :limit => 2, :offset => 1).sum(:credit_limit)
assert_equal [2, 6], c.keys.compact
end
def test_limit_should_apply_before_count
accounts = Account.limit(3).where('firm_id IS NOT NULL')
assert_equal 3, accounts.count(:firm_id)
assert_equal 3, accounts.select(:firm_id).count
end
def test_count_should_shortcut_with_limit_zero
accounts = Account.limit(0)
assert_no_queries { assert_equal 0, accounts.count }
end
def test_limit_is_kept
return if current_adapter?(:OracleAdapter)
queries = assert_sql { Account.limit(1).count }
assert_equal 1, queries.length
assert_match(/LIMIT/, queries.first)
end
def test_offset_is_kept
return if current_adapter?(:OracleAdapter)
queries = assert_sql { Account.offset(1).count }
assert_equal 1, queries.length
assert_match(/OFFSET/, queries.first)
end
def test_limit_with_offset_is_kept
return if current_adapter?(:OracleAdapter)
queries = assert_sql { Account.limit(1).offset(1).count }
assert_equal 1, queries.length
assert_match(/LIMIT/, queries.first)
assert_match(/OFFSET/, queries.first)
end
def test_no_limit_no_offset
queries = assert_sql { Account.count }
assert_equal 1, queries.length
assert_no_match(/LIMIT/, queries.first)
assert_no_match(/OFFSET/, queries.first)
end
def test_should_group_by_summed_field_having_condition
c = Account.scoped(:group => :firm_id,
:having => 'sum(credit_limit) > 50').sum(:credit_limit)
assert_nil c[1]
assert_equal 105, c[6]
assert_equal 60, c[2]
end
def test_should_group_by_summed_field_having_condition_from_select
c = Account.select("MIN(credit_limit) AS min_credit_limit").group(:firm_id).having("MIN(credit_limit) > 50").sum(:credit_limit)
assert_nil c[1]
assert_equal 60, c[2]
assert_equal 53, c[9]
end
def test_should_group_by_summed_association
c = Account.group(:firm).sum(:credit_limit)
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.where('firm_id = 6').sum(:credit_limit)
end
def test_should_return_zero_if_sum_conditions_return_nothing
assert_equal 0, Account.where('1 = 2').sum(:credit_limit)
assert_equal 0, companies(:rails_core).companies.where('1 = 2').sum(:id)
end
def test_sum_should_return_valid_values_for_decimals
NumericData.create(:bank_balance => 19.83)
assert_equal 19.83, NumericData.sum(:bank_balance)
end
def test_should_group_by_summed_field_with_conditions
c = Account.scoped(:where => 'firm_id > 1',
:group => :firm_id).sum(:credit_limit)
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.scoped(:where => 'firm_id > 1',
:group => :firm_id,
:having => 'sum(credit_limit) > 60').sum(:credit_limit)
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.group('accounts.firm_id').sum(:credit_limit)
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.group('accounts.firm_id').count(:all)
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.group(:firm).count(:all)
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_group_by_association_with_non_numeric_foreign_key
ActiveRecord::Base.connection.expects(:select_all).returns([{"count_all" => 1, "firm_id" => "ABC"}])
firm = mock()
firm.expects(:id).returns("ABC")
firm.expects(:class).returns(Firm)
Company.expects(:find).with(["ABC"]).returns([firm])
column = mock()
column.expects(:name).at_least_once.returns(:firm_id)
column.expects(:type_cast).with("ABC").returns("ABC")
Account.expects(:columns).at_least_once.returns([column])
c = Account.group(:firm).count(:all)
first_key = c.keys.first
assert_equal Firm, first_key.class
assert_equal 1, c[first_key]
end
def test_should_calculate_grouped_association_with_foreign_key_option
Account.belongs_to :another_firm, :class_name => 'Firm', :foreign_key => 'firm_id'
c = Account.group(:another_firm).count(:all)
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.group("UPPER(#{QUOTED_TYPE})").count(:all)
assert_equal 2, c[nil]
assert_equal 1, c['DEPENDENTFIRM']
assert_equal 4, c['CLIENT']
assert_equal 2, c['FIRM']
end
def test_should_calculate_grouped_by_function_with_table_alias
c = Company.group("UPPER(companies.#{QUOTED_TYPE})").count(:all)
assert_equal 2, c[nil]
assert_equal 1, c['DEPENDENTFIRM']
assert_equal 4, 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_from
assert_equal Club.count, Organization.clubs.count
end
def test_should_sum_scoped_field_with_conditions
assert_equal 8, companies(:rails_core).companies.where('id > 7').sum(:id)
end
def test_should_group_by_scoped_field
c = companies(:rails_core).companies.group(:name).sum(:id)
assert_equal 7, c['Leetsoft']
assert_equal 8, c['Jadedpixel']
end
def test_should_group_by_summed_field_through_association_and_having
c = companies(:rails_core).companies.group(:name).having('sum(id) > 7').sum(:id)
assert_nil c['Leetsoft']
assert_equal 8, c['Jadedpixel']
end
def test_should_count_selected_field_with_include
assert_equal 6, Account.includes(:firm).count(:distinct => true)
assert_equal 4, Account.includes(:firm).select(:credit_limit).count(:distinct => true)
end
def test_should_not_perform_joined_include_by_default
assert_equal Account.count, Account.includes(:firm).count
queries = assert_sql { Account.includes(:firm).count }
assert_no_match(/join/i, queries.last)
end
def test_should_perform_joined_include_when_referencing_included_tables
joined_count = Account.includes(:firm).where(:companies => {:name => '37signals'}).count
assert_equal 1, joined_count
end
def test_should_count_scoped_select
Account.update_all("credit_limit = NULL")
assert_equal 0, Account.scoped(:select => "credit_limit").count
end
def test_should_count_scoped_select_with_options
Account.update_all("credit_limit = NULL")
Account.last.update_column('credit_limit', 49)
Account.first.update_column('credit_limit', 51)
assert_equal 1, Account.scoped(:select => "credit_limit").where('credit_limit >= 50').count
end
def test_should_count_manual_select_with_include
assert_equal 6, Account.scoped(:select => "DISTINCT accounts.id", :includes => :firm).count
end
def test_count_with_column_parameter
assert_equal 5, Account.count(:firm_id)
end
def test_count_with_column_and_options_parameter
assert_equal 2, Account.where("credit_limit = 50 AND firm_id IS NOT NULL").count(:firm_id)
end
def test_should_count_field_in_joined_table
assert_equal 5, Account.joins(:firm).count('companies.id')
assert_equal 4, Account.joins(:firm).count('companies.id', :distinct => true)
end
def test_should_count_field_in_joined_table_with_group_by
c = Account.scoped(:group => 'accounts.firm_id', :joins => :firm).count('companies.id')
[1,6,2,9].each { |firm_id| assert c.keys.include?(firm_id) }
end
def test_count_with_no_parameters_isnt_deprecated
assert_not_deprecated { Account.count }
end
def test_count_with_too_many_parameters_raises
assert_raise(ArgumentError) { Account.count(1, 2, 3) }
end
def test_should_sum_expression
# Oracle adapter returns floating point value 636.0 after SUM
if current_adapter?(:OracleAdapter)
assert_equal 636, Account.sum("2 * credit_limit")
else
assert_equal 636, Account.sum("2 * credit_limit").to_i
end
end
def test_count_with_from_option
assert_equal Company.count(:all), Company.from('companies').count(:all)
assert_equal Account.where("credit_limit = 50").count(:all),
Account.from('accounts').where("credit_limit = 50").count(:all)
assert_equal Company.where(:type => "Firm").count(:type),
Company.where(:type => "Firm").from('companies').count(:type)
end
def test_sum_with_from_option
assert_equal Account.sum(:credit_limit), Account.from('accounts').sum(:credit_limit)
assert_equal Account.where("credit_limit > 50").sum(:credit_limit),
Account.where("credit_limit > 50").from('accounts').sum(:credit_limit)
end
def test_sum_array_compatibility
assert_equal Account.sum(:credit_limit), Account.sum(&:credit_limit)
end
def test_average_with_from_option
assert_equal Account.average(:credit_limit), Account.from('accounts').average(:credit_limit)
assert_equal Account.where("credit_limit > 50").average(:credit_limit),
Account.where("credit_limit > 50").from('accounts').average(:credit_limit)
end
def test_minimum_with_from_option
assert_equal Account.minimum(:credit_limit), Account.from('accounts').minimum(:credit_limit)
assert_equal Account.where("credit_limit > 50").minimum(:credit_limit),
Account.where("credit_limit > 50").from('accounts').minimum(:credit_limit)
end
def test_maximum_with_from_option
assert_equal Account.maximum(:credit_limit), Account.from('accounts').maximum(:credit_limit)
assert_equal Account.where("credit_limit > 50").maximum(:credit_limit),
Account.where("credit_limit > 50").from('accounts').maximum(:credit_limit)
end
def test_from_option_with_specified_index
if Edge.connection.adapter_name == 'MySQL' or Edge.connection.adapter_name == 'Mysql2'
assert_equal Edge.count(:all), Edge.from('edges USE INDEX(unique_edge_index)').count(:all)
assert_equal Edge.where('sink_id < 5').count(:all),
Edge.from('edges USE INDEX(unique_edge_index)').where('sink_id < 5').count(:all)
end
end
def test_from_option_with_table_different_than_class
assert_equal Account.count(:all), Company.from('accounts').count(:all)
end
def test_distinct_is_honored_when_used_with_count_operation_after_group
# Count the number of authors for approved topics
approved_topics_count = Topic.group(:approved).count(:author_name)[true]
assert_equal approved_topics_count, 3
# Count the number of distinct authors for approved Topics
distinct_authors_for_approved_count = Topic.group(:approved).count(:author_name, :distinct => true)[true]
assert_equal distinct_authors_for_approved_count, 2
end
def test_pluck
assert_equal [1,2,3,4], Topic.order(:id).pluck(:id)
end
def test_pluck_type_cast
topic = topics(:first)
relation = Topic.where(:id => topic.id)
assert_equal [ topic.approved ], relation.pluck(:approved)
assert_equal [ topic.last_read ], relation.pluck(:last_read)
assert_equal [ topic.written_on ], relation.pluck(:written_on)
end
def test_pluck_and_uniq
assert_equal [50, 53, 55, 60], Account.order(:credit_limit).uniq.pluck(:credit_limit)
end
def test_pluck_in_relation
company = Company.first
contract = company.contracts.create!
assert_equal [contract.id], company.contracts.pluck(:id)
end
def test_pluck_with_serialization
t = Topic.create!(:content => { :foo => :bar })
assert_equal [{:foo => :bar}], Topic.where(:id => t.id).pluck(:content)
end
def test_pluck_with_qualified_column_name
assert_equal [1,2,3,4], Topic.order(:id).pluck("topics.id")
end
def test_pluck_auto_table_name_prefix
c = Company.create!(:name => "test", :contracts => [Contract.new])
assert_equal [c.id], Company.joins(:contracts).pluck(:id)
end
def test_pluck_not_auto_table_name_prefix_if_column_joined
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
assert_equal [7], Company.joins(:contracts).pluck(:developer_id)
end
def test_plucks_with_ids
assert_equal Company.all.map(&:id).sort, Company.ids.sort
end
end
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