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require File.join(File.dirname(__FILE__), '..', '..', '..', '..', 'spec_helper')
module Arel
describe Attribute do
before do
@relation = Table.new(:users)
@attribute = @relation[:id]
end
describe Attribute::Transformations do
describe '#as' do
it "manufactures an aliased attributed" do
@attribute.as(:alias).should == Attribute.new(@relation, @attribute.name, :alias => :alias, :ancestor => @attribute)
end
end
describe '#bind' do
it "manufactures an attribute with the relation bound and self as an ancestor" do
derived_relation = @relation.where(@relation[:id].eq(1))
@attribute.bind(derived_relation).should == Attribute.new(derived_relation, @attribute.name, :ancestor => @attribute)
end
it "returns self if the substituting to the same relation" do
@attribute.bind(@relation).should == @attribute
end
end
describe '#to_attribute' do
it "returns self" do
@attribute.to_attribute.should == @attribute
end
end
end
describe '#column' do
it "returns the corresponding column in the relation" do
@attribute.column.should == @relation.column_for(@attribute)
end
end
describe '#engine' do
it "delegates to its relation" do
Attribute.new(@relation, :id).engine.should == @relation.engine
end
end
describe Attribute::Congruence do
describe '/' do
before do
@aliased_relation = @relation.alias
@doubly_aliased_relation = @aliased_relation.alias
end
describe 'when dividing two unrelated attributes' do
it "returns 0.0" do
(@relation[:id] / @relation[:name]).should == 0.0
end
end
describe 'when dividing two matching attributes' do
it 'returns a the highest score for the most similar attributes' do
(@aliased_relation[:id] / @relation[:id]) \
.should == (@aliased_relation[:id] / @relation[:id])
(@aliased_relation[:id] / @relation[:id]) \
.should < (@aliased_relation[:id] / @aliased_relation[:id])
end
end
end
end
describe Attribute::Predications do
before do
@attribute = Attribute.new(@relation, :name)
end
describe '#eq' do
it "manufactures an equality predicate" do
@attribute.eq('name').should == Equality.new(@attribute, 'name')
end
end
describe '#lt' do
it "manufactures a less-than predicate" do
@attribute.lt(10).should == LessThan.new(@attribute, 10)
end
end
describe '#lteq' do
it "manufactures a less-than or equal-to predicate" do
@attribute.lteq(10).should == LessThanOrEqualTo.new(@attribute, 10)
end
end
describe '#gt' do
it "manufactures a greater-than predicate" do
@attribute.gt(10).should == GreaterThan.new(@attribute, 10)
end
end
describe '#gteq' do
it "manufactures a greater-than or equal-to predicate" do
@attribute.gteq(10).should == GreaterThanOrEqualTo.new(@attribute, 10)
end
end
describe '#matches' do
it "manufactures a match predicate" do
@attribute.matches(/.*/).should == Match.new(@attribute, /.*/)
end
end
describe '#in' do
it "manufactures an in predicate" do
@attribute.in(1..30).should == In.new(@attribute, (1..30))
end
end
end
describe Attribute::Expressions do
before do
@attribute = Attribute.new(@relation, :name)
end
describe '#count' do
it "manufactures a count Expression" do
@attribute.count.should == Count.new(@attribute)
end
end
describe '#sum' do
it "manufactures a sum Expression" do
@attribute.sum.should == Sum.new(@attribute)
end
end
describe '#maximum' do
it "manufactures a maximum Expression" do
@attribute.maximum.should == Maximum.new(@attribute)
end
end
describe '#minimum' do
it "manufactures a minimum Expression" do
@attribute.minimum.should == Minimum.new(@attribute)
end
end
describe '#average' do
it "manufactures an average Expression" do
@attribute.average.should == Average.new(@attribute)
end
end
end
describe Attribute::Orderings do
describe '#asc' do
it 'manufactures an ascending ordering' do
pending
end
end
describe '#desc' do
it 'manufactures a descending ordering' do
pending
end
end
end
end
end
|
