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require_relative "spec_helper"
describe Sequel::Model, "BooleanReaders plugin" do
before do
@db = Sequel.mock
def @db.supports_schema_parsing?() true end
def @db.schema(*args)
[[:id, {}], [:z, {:type=>:integer, :db_type=>'tinyint(1)'}], [:b, {:type=>:boolean, :db_type=>'boolean'}]]
end
@c = Class.new(Sequel::Model(@db[:items]))
@p = proc do
@columns = [:id, :b, :z]
def columns; @columns; end
alias columns columns
end
@c.instance_eval(&@p)
end
it "should create attribute? readers for all boolean attributes" do
@c.plugin(:boolean_readers)
o = @c.new
o.b?.must_be_nil
o.b = '1'
o.b?.must_equal true
o.b = '0'
o.b?.must_equal false
o.b = ''
o.b?.must_be_nil
end
it "should not create attribute? readers for non-boolean attributes" do
@c.plugin(:boolean_readers)
proc{@c.new.z?}.must_raise(NoMethodError)
proc{@c.new.id?}.must_raise(NoMethodError)
end
it "should accept a block to determine if an attribute is boolean" do
@c.plugin(:boolean_readers){|c| db_schema[c][:db_type] == 'tinyint(1)'}
proc{@c.new.b?}.must_raise(NoMethodError)
o = @c.new
o.z.must_be_nil
o.z?.must_be_nil
o.z = '1'
o.z.must_equal 1
o.z?.must_equal true
o.z = '0'
o.z.must_equal 0
o.z?.must_equal false
o.z = ''
o.z.must_be_nil
o.z?.must_be_nil
end
it "should create boolean readers when set_dataset is defined" do
c = Class.new(Sequel::Model(@db))
c.instance_eval(&@p)
c.plugin(:boolean_readers)
c.set_dataset(@db[:a])
o = c.new
o.b?.must_be_nil
o.b = '1'
o.b?.must_equal true
o.b = '0'
o.b?.must_equal false
o.b = ''
o.b?.must_be_nil
proc{o.i?}.must_raise(NoMethodError)
c = Class.new(Sequel::Model(@db))
c.instance_eval(&@p)
c.plugin(:boolean_readers){|x| db_schema[x][:db_type] == 'tinyint(1)'}
c.set_dataset(@db[:a])
o = c.new
o.z.must_be_nil
o.z?.must_be_nil
o.z = '1'
o.z.must_equal 1
o.z?.must_equal true
o.z = '0'
o.z.must_equal 0
o.z?.must_equal false
o.z = ''
o.z.must_be_nil
o.z?.must_be_nil
proc{o.b?}.must_raise(NoMethodError)
end
it "should handle cases where getting the columns raises an error" do
def @c.columns; raise Sequel::Error end
@c.plugin(:boolean_readers)
proc{@c.new.b?}.must_raise(NoMethodError)
end
end
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