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require 'spec_helper'
module Arel
describe "Attributes::Boolean" do
before :all do
@relation = Model.build do |r|
r.engine Testing::Engine.new
r.attribute :awesome, Attributes::Boolean
end
end
def type_cast(val)
@relation[:awesome].type_cast(val)
end
describe "#type_cast" do
it "returns same value if passed a boolean" do
val = true
type_cast(val).should eql(val)
end
it "returns boolean representation (false) of nil" do
type_cast(nil).should eql(false)
end
it "returns boolean representation of 'true', 'false'" do
type_cast('true').should eql(true)
type_cast('false').should eql(false)
end
it "returns boolean representation of :true, :false" do
type_cast(:true).should eql(true)
type_cast(:false).should eql(false)
end
it "returns boolean representation of 0, 1" do
type_cast(1).should == true
type_cast(0).should == false
end
it "calls #to_s on arbitrary objects" do
obj = Object.new
obj.extend Module.new { def to_s ; 'true' ; end }
type_cast(obj).should == true
end
[ Object.new, 'string', '00.0', 5 ].each do |value|
it "raises exception when attempting type_cast of non-boolean value #{value.inspect}" do
lambda do
type_cast(value)
end.should raise_error(TypecastError, /could not typecast/)
end
end
end
end
end
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