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require File.join(File.dirname(__FILE__), '..', '..', '..', 'spec_helper')
module ActiveRelation
describe Attribute do
before do
@relation = Table.new(:users)
@attribute = Attribute.new(@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.select(@relation[:id].equals(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 '#qualify' do
it "manufactures an attribute aliased with that attribute's qualified name" do
@attribute.qualify.should == Attribute.new(@attribute.relation, @attribute.name, :alias => @attribute.qualified_name, :ancestor => @attribute)
end
end
describe '#to_attribute' do
it "returns self" do
@attribute.to_attribute.should == @attribute
end
end
end
describe '#column' do
it "" do
pending
end
end
describe '#qualified_name' do
it "manufactures an attribute name prefixed with the relation's name" do
stub(@relation).prefix_for(anything) { 'bruisers' }
Attribute.new(@relation, :id).qualified_name.should == 'bruisers.id'
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
it "obtains if the attributes are identical" do
Attribute.new(@relation, :name).should =~ Attribute.new(@relation, :name)
end
it "obtains if the attributes have an overlapping history" do
Attribute.new(@relation, :name, :ancestor => Attribute.new(@relation, :name)).should =~ Attribute.new(@relation, :name)
Attribute.new(@relation, :name).should =~ Attribute.new(@relation, :name, :ancestor => Attribute.new(@relation, :name))
end
end
describe 'hashing' do
it "implements hash equality" do
Attribute.new(@relation, 'name').should hash_the_same_as(Attribute.new(@relation, 'name'))
Attribute.new(@relation, 'name').should_not hash_the_same_as(Attribute.new(@relation, 'id'))
end
end
end
describe '#to_sql' do
it "" do
pending "this test is not sufficiently resilient"
end
it "manufactures sql with an alias" do
stub(@relation).prefix_for(anything) { 'bruisers' }
Attribute.new(@relation, :name, :alias => :alias).to_sql.should be_like("`bruisers`.`name`")
end
end
describe Attribute::Predications do
before do
@attribute = Attribute.new(@relation, :name)
end
describe '#equals' do
it "manufactures an equality predicate" do
@attribute.equals('name').should == Equality.new(@attribute, 'name')
end
end
describe '#less_than' do
it "manufactures a less-than predicate" do
@attribute.less_than(10).should == LessThan.new(@attribute, 10)
end
end
describe '#less_than_or_equal_to' do
it "manufactures a less-than or equal-to predicate" do
@attribute.less_than_or_equal_to(10).should == LessThanOrEqualTo.new(@attribute, 10)
end
end
describe '#greater_than' do
it "manufactures a greater-than predicate" do
@attribute.greater_than(10).should == GreaterThan.new(@attribute, 10)
end
end
describe '#greater_than_or_equal_to' do
it "manufactures a greater-than or equal-to predicate" do
@attribute.greater_than_or_equal_to(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
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 == Expression.new(@attribute, "COUNT")
end
end
describe '#sum' do
it "manufactures a sum Expression" do
@attribute.sum.should == Expression.new(@attribute, "SUM")
end
end
describe '#maximum' do
it "manufactures a maximum Expression" do
@attribute.maximum.should == Expression.new(@attribute, "MAX")
end
end
describe '#minimum' do
it "manufactures a minimum Expression" do
@attribute.minimum.should == Expression.new(@attribute, "MIN")
end
end
describe '#average' do
it "manufactures an average Expression" do
@attribute.average.should == Expression.new(@attribute, "AVG")
end
end
end
end
end
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