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require File.join(File.dirname(__FILE__), '..', 'spec_helper')
describe BinaryPredicate do
before do
@relation1 = TableRelation.new(:foo)
@relation2 = TableRelation.new(:bar)
@attribute1 = Attribute.new(@relation1, :name1)
@attribute2 = Attribute.new(@relation2, :name2)
class ConcreteBinaryPredicate < BinaryPredicate
def predicate_name
:equals
end
end
end
describe '#initialize' do
it "requires that both columns come from the same relation" do
pending
end
end
describe '==' do
it "obtains if attribute1 and attribute2 are identical" do
BinaryPredicate.new(@attribute1, @attribute2).should == BinaryPredicate.new(@attribute1, @attribute2)
BinaryPredicate.new(@attribute1, @attribute2).should_not == BinaryPredicate.new(@attribute1, @attribute1)
end
it "obtains if the concrete type of the BinaryPredicates are identical" do
ConcreteBinaryPredicate.new(@attribute1, @attribute2).should == ConcreteBinaryPredicate.new(@attribute1, @attribute2)
BinaryPredicate.new(@attribute1, @attribute2).should_not == ConcreteBinaryPredicate.new(@attribute1, @attribute2)
end
end
describe '#qualify' do
it "manufactures an equality predicate with qualified attributes" do
ConcreteBinaryPredicate.new(@attribute1, @attribute2).qualify. \
should == ConcreteBinaryPredicate.new(@attribute1.qualify, @attribute2.qualify)
end
end
describe '#to_sql' do
it 'manufactures correct sql' do
ConcreteBinaryPredicate.new(@attribute1, @attribute2).to_sql.should == ConditionsBuilder.new do
equals do
column :foo, :name1
column :bar, :name2
end
end
end
end
end
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