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require_relative "spec_helper"
describe "Composition plugin" do
before do
@c = Class.new(Sequel::Model(:items))
@c.plugin :composition
@c.columns :id, :year, :month, :day
@o = @c.load(:id=>1, :year=>1, :month=>2, :day=>3)
DB.reset
end
it ".composition should add compositions" do
@o.wont_respond_to(:date)
@c.composition :date, :mapping=>[:year, :month, :day]
@o.date.must_equal Date.new(1, 2, 3)
end
it "loading the plugin twice should not remove existing compositions" do
@c.composition :date, :mapping=>[:year, :month, :day]
@c.plugin :composition
@c.compositions.keys.must_equal [:date]
end
it ".composition should raise an error if :composer and :decomposer options are not present and :mapping option is not provided" do
proc{@c.composition :date}.must_raise(Sequel::Error)
@c.composition :date, :composer=>proc{}, :decomposer=>proc{}
@c.composition :date, :mapping=>[]
end
it "should handle validations of underlying columns" do
@c.composition :date, :mapping=>[:year, :month, :day]
o = @c.new
def o.validate
[:year, :month, :day].each{|c| errors.add(c, "not present") unless send(c)}
end
o.valid?.must_equal false
o.date = Date.new(1, 2, 3)
o.valid?.must_equal true
end
it "should have decomposer work with column_conflicts plugin" do
@c.plugin :column_conflicts
@c.set_column_conflict! :year
@c.composition :date, :mapping=>[:year, :month, :day]
o = @c.new
def o.validate
[:year, :month, :day].each{|c| errors.add(c, "not present") unless send(c)}
end
o.valid?.must_equal false
o.date = Date.new(1, 2, 3)
o.valid?.must_equal true
end
it "should set column values even when not validating" do
@c.composition :date, :mapping=>[:year, :month, :day]
@c.load(id: 1).set(:date=>Date.new(4, 8, 12)).save(:validate=>false)
DB.sqls.must_equal ['UPDATE items SET year = 4, month = 8, day = 12 WHERE (id = 1)']
end
it ".compositions should return the reflection hash of compositions" do
@c.compositions.must_equal({})
@c.composition :date, :mapping=>[:year, :month, :day]
@c.compositions.keys.must_equal [:date]
r = @c.compositions.values.first
r[:mapping].must_equal [:year, :month, :day]
r[:composer].must_be_kind_of Proc
r[:decomposer].must_be_kind_of Proc
end
it "#compositions should be a hash of cached values of compositions" do
@o.compositions.must_equal({})
@c.composition :date, :mapping=>[:year, :month, :day]
@o.date
@o.compositions.must_equal(:date=>Date.new(1, 2, 3))
end
it "should work with custom :composer and :decomposer options" do
@c.composition :date, :composer=>proc{Date.new(year+1, month+2, day+3)}, :decomposer=>proc{[:year, :month, :day].each{|s| self.send("#{s}=", date.send(s) * 2)}}
@o.date.must_equal Date.new(2, 4, 6)
@o.save
DB.sqls.must_equal ['UPDATE items SET year = 4, month = 8, day = 12 WHERE (id = 1)']
end
it "should work with custom :composer and :decomposer options when :mapping option provided" do
@c.composition :date, :composer=>proc{Date.new(year+1, month+2, day+3)}, :decomposer=>proc{[:year, :month, :day].each{|s| self.send("#{s}=", date.send(s) * 2)}}, :mapping=>[:year, :month, :day]
@o.date.must_equal Date.new(2, 4, 6)
@o.save
DB.sqls.must_equal ['UPDATE items SET year = 4, month = 8, day = 12 WHERE (id = 1)']
end
it "should allow call super in composition getter and setter method definition in class" do
@c.composition :date, :mapping=>[:year, :month, :day]
@c.class_eval do
def date
super + 1
end
def date=(v)
super(v - 3)
end
end
@o.date.must_equal Date.new(1, 2, 4)
@o.compositions[:date].must_equal Date.new(1, 2, 3)
@o.date = Date.new(1, 3, 5)
@o.compositions[:date].must_equal Date.new(1, 3, 2)
@o.date.must_equal Date.new(1, 3, 3)
end
it "should mark the object as modified whenever the composition is set" do
@c.composition :date, :mapping=>[:year, :month, :day]
@o.modified?.must_equal false
@o.date = Date.new(3, 4, 5)
@o.modified?.must_equal true
end
it "should only decompose existing compositions" do
called = false
@c.composition :date, :composer=>proc{}, :decomposer=>proc{called = true}
called.must_equal false
@o.save
called.must_equal false
@o.date = Date.new(1,2,3)
called.must_equal false
@o.save_changes
called.must_equal true
end
it "should clear compositions cache when refreshing" do
@c.composition :date, :composer=>proc{}, :decomposer=>proc{}
@o.date = Date.new(3, 4, 5)
@o.refresh
@o.compositions.must_equal({})
end
it "should handle case when no compositions are cached when refreshing" do
@c.composition :date, :composer=>proc{}, :decomposer=>proc{}
@o.refresh
@o.compositions.must_equal({})
end
it "should not clear compositions cache when refreshing after save" do
@c.composition :date, :composer=>proc{}, :decomposer=>proc{}
@c.create(:date=>Date.new(3, 4, 5)).compositions.must_equal(:date=>Date.new(3, 4, 5))
end
it "should not clear compositions cache when saving with insert_select" do
@c.dataset = @c.dataset.with_extend do
def supports_insert_select?; true end
def insert_select(*) {:id=>1} end
end
@c.composition :date, :composer=>proc{}, :decomposer=>proc{}
@c.create(:date=>Date.new(3, 4, 5)).compositions.must_equal(:date=>Date.new(3, 4, 5))
end
it "should instantiate compositions lazily" do
@c.composition :date, :mapping=>[:year, :month, :day]
@o.compositions.must_equal({})
@o.date
@o.compositions.must_equal(:date=>Date.new(1,2,3))
end
it "should cache value of composition" do
times = 0
@c.composition :date, :composer=>proc{times+=1}, :decomposer=>proc{}
times.must_equal 0
@o.date
times.must_equal 1
@o.date
times.must_equal 1
end
it ":class option should take an string, symbol, or class" do
@c.composition :date1, :class=>'Date', :mapping=>[:year, :month, :day]
@c.composition :date2, :class=>:Date, :mapping=>[:year, :month, :day]
@c.composition :date3, :class=>Date, :mapping=>[:year, :month, :day]
@o.date1.must_equal Date.new(1, 2, 3)
@o.date2.must_equal Date.new(1, 2, 3)
@o.date3.must_equal Date.new(1, 2, 3)
end
it ":mapping option should work with a single array of symbols" do
c = Class.new do
def initialize(y, m)
@y, @m = y, m
end
def year
@y * 2
end
def month
@m * 3
end
end
@c.composition :date, :class=>c, :mapping=>[:year, :month]
@o.date.year.must_equal 2
@o.date.month.must_equal 6
@o.date = c.new(3, 4)
@o.save
DB.sqls.must_equal ['UPDATE items SET year = 6, month = 12, day = 3 WHERE (id = 1)']
end
it ":mapping option should work with an array of two pairs of symbols" do
c = Class.new do
def initialize(y, m)
@y, @m = y, m
end
def y
@y * 2
end
def m
@m * 3
end
end
@c.composition :date, :class=>c, :mapping=>[[:year, :y], [:month, :m]]
@o.date.y.must_equal 2
@o.date.m.must_equal 6
@o.date = c.new(3, 4)
@o.save
DB.sqls.must_equal ['UPDATE items SET year = 6, month = 12, day = 3 WHERE (id = 1)']
end
it ":mapping option :composer should return nil if all values are nil" do
@c.composition :date, :mapping=>[:year, :month, :day]
@c.new.date.must_be_nil
end
it ":mapping option :decomposer should set all related fields to nil if nil" do
@c.composition :date, :mapping=>[:year, :month, :day]
@o.date = nil
@o.save
DB.sqls.must_equal ['UPDATE items SET year = NULL, month = NULL, day = NULL WHERE (id = 1)']
end
it "should work with frozen instances" do
@c.composition :date, :mapping=>[:year, :month, :day]
@o.freeze.must_be_same_as @o
@o.date.must_equal Date.new(1, 2, 3)
proc{@o.date = Date.today}.must_raise
end
it "should work with frozen instances that validate the composted value" do
@c.composition :date, :mapping=>[:year, :month, :day]
@c.send(:define_method, :validate){errors.add(:date, "something") if date}
@o.freeze
@o.date.must_equal Date.new(1, 2, 3)
proc{@o.date = Date.today}.must_raise
end
it "should have #dup duplicate compositions" do
@c.composition :date, :mapping=>[:year, :month, :day]
@o.date.must_equal Date.new(1, 2, 3)
@o.dup.compositions.must_equal @o.compositions
@o.dup.compositions.wont_be_same_as(@o.compositions)
end
it "should work correctly with subclasses" do
@c.composition :date, :mapping=>[:year, :month, :day]
c = Class.new(@c)
o = c.load(:id=>1, :year=>1, :month=>2, :day=>3)
o.date.must_equal Date.new(1, 2, 3)
o.save
DB.sqls.must_equal ['UPDATE items SET year = 1, month = 2, day = 3 WHERE (id = 1)']
end
it "should freeze composition metadata when freezing model class" do
@c.composition :date, :mapping=>[:year, :month, :day]
@c.freeze
@c.compositions.frozen?.must_equal true
@c.compositions[:date].frozen?.must_equal true
end
end
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