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require "cases/helper"
require 'models/club'
require 'models/company'
require "models/contract"
require 'models/edge'
require 'models/organization'
require 'models/possession'
require 'models/topic'
require 'models/minivan'
require 'models/speedometer'
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.all.send(:type_cast_calculated_value, 0, nil, 'avg')
assert_equal 53.0, NumericData.all.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 do |firm_id|
assert c.keys.include?(firm_id), "Group #{c.inspect} does not contain firm_id #{firm_id}"
end
end
def test_should_group_by_arel_attribute
c = Account.group(Account.arel_table[:firm_id]).sum(:credit_limit)
[1,6,2].each do |firm_id|
assert c.keys.include?(firm_id), "Group #{c.inspect} does not contain firm_id #{firm_id}"
end
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.all.merge!(: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.all.merge!(: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.all.merge!(: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.all.merge!(: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.all.merge!(: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.all.merge!(: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.all.merge!(: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
Speedometer.create! id: 'ABC'
Minivan.create! id: 'OMG', speedometer_id: 'ABC'
c = Minivan.group(:speedometer).count(:all)
first_key = c.keys.first
assert_equal Speedometer, 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.all.merge!(:select => "credit_limit").count
end
def test_should_count_scoped_select_with_options
Account.update_all("credit_limit = NULL")
Account.last.update_columns('credit_limit' => 49)
Account.first.update_columns('credit_limit' => 51)
assert_equal 1, Account.all.merge!(:select => "credit_limit").where('credit_limit >= 50').count
end
def test_should_count_manual_select_with_include
assert_equal 6, Account.all.merge!(: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.all.merge!(: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_sum_expression_returns_zero_when_no_records_to_sum
assert_equal 0, Account.where('1 = 2').sum("2 * credit_limit")
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_maximum_with_not_auto_table_name_prefix_if_column_included
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
# TODO: Investigate why PG isn't being typecast
if current_adapter?(:PostgreSQLAdapter) || current_adapter?(:MysqlAdapter)
assert_equal "7", Company.includes(:contracts).maximum(:developer_id)
else
assert_equal 7, Company.includes(:contracts).maximum(:developer_id)
end
end
def test_minimum_with_not_auto_table_name_prefix_if_column_included
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
# TODO: Investigate why PG isn't being typecast
if current_adapter?(:PostgreSQLAdapter) || current_adapter?(:MysqlAdapter)
assert_equal "7", Company.includes(:contracts).minimum(:developer_id)
else
assert_equal 7, Company.includes(:contracts).minimum(:developer_id)
end
end
def test_sum_with_not_auto_table_name_prefix_if_column_included
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
# TODO: Investigate why PG isn't being typecast
if current_adapter?(:MysqlAdapter) || current_adapter?(:PostgreSQLAdapter)
assert_equal "7", Company.includes(:contracts).sum(:developer_id)
else
assert_equal 7, Company.includes(:contracts).sum(:developer_id)
end
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_if_table_included
c = Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
assert_equal [c.id], Company.includes(:contracts).where("contracts.id" => c.contracts.first).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_pluck_with_selection_clause
assert_equal [50, 53, 55, 60], Account.pluck('DISTINCT credit_limit').sort
assert_equal [50, 53, 55, 60], Account.pluck('DISTINCT accounts.credit_limit').sort
assert_equal [50, 53, 55, 60], Account.pluck('DISTINCT(credit_limit)').sort
# MySQL returns "SUM(DISTINCT(credit_limit))" as the column name unless
# an alias is provided. Without the alias, the column cannot be found
# and properly typecast.
assert_equal [50 + 53 + 55 + 60], Account.pluck('SUM(DISTINCT(credit_limit)) as credit_limit')
end
def test_plucks_with_ids
assert_equal Company.all.map(&:id).sort, Company.ids.sort
end
def test_pluck_not_auto_table_name_prefix_if_column_included
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
ids = Company.includes(:contracts).pluck(:developer_id)
assert_equal Company.count, ids.length
assert_equal [7], ids.compact
end
def test_pluck_multiple_columns
assert_equal [
[1, "The First Topic"], [2, "The Second Topic of the day"],
[3, "The Third Topic of the day"], [4, "The Fourth Topic of the day"]
], Topic.order(:id).pluck(:id, :title)
assert_equal [
[1, "The First Topic", "David"], [2, "The Second Topic of the day", "Mary"],
[3, "The Third Topic of the day", "Carl"], [4, "The Fourth Topic of the day", "Carl"]
], Topic.order(:id).pluck(:id, :title, :author_name)
end
def test_pluck_with_multiple_columns_and_selection_clause
assert_equal [[1, 50], [2, 50], [3, 50], [4, 60], [5, 55], [6, 53]],
Account.pluck('id, credit_limit')
end
def test_pluck_with_multiple_columns_and_includes
Company.create!(:name => "test", :contracts => [Contract.new(:developer_id => 7)])
companies_and_developers = Company.order('companies.id').includes(:contracts).pluck(:name, :developer_id)
assert_equal Company.count, companies_and_developers.length
assert_equal ["37signals", nil], companies_and_developers.first
assert_equal ["test", 7], companies_and_developers.last
end
def test_pluck_with_reserved_words
Possession.create!(:where => "Over There")
assert_equal ["Over There"], Possession.pluck(:where)
end
def test_pluck_replaces_select_clause
taks_relation = Topic.select(:approved, :id).order(:id)
assert_equal [1,2,3,4], taks_relation.pluck(:id)
assert_equal [false, true, true, true], taks_relation.pluck(:approved)
end
end
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