validates_timeliness/spec/attribute_methods_spec.rb

require File.dirname(__FILE__) + '/spec_helper'

describe ValidatesTimeliness::AttributeMethods do
  include ValidatesTimeliness::AttributeMethods
  include ValidatesTimeliness::Validations
  
  before do
    @person = Person.new
  end

  it "should call parser on write for datetime attribute" do
    @person.class.should_receive(:parse_date_time).once
    @person.birth_date_and_time = "2000-01-01 02:03:04"
  end

  it "should call parser on write for date attribute" do
    @person.class.should_receive(:parse_date_time).once
    @person.birth_date = "2000-01-01"
  end

  it "should call parser on write for time attribute" do
    @person.class.should_receive(:parse_date_time).once
    @person.birth_time = "12:00"
  end

  it "should return raw string value for attribute_before_type_cast when written as string" do
    time_string = "2000-01-01 02:03:04"
    @person.birth_date_and_time = time_string
    @person.birth_date_and_time_before_type_cast.should == time_string
  end
  
  it "should return Time object for attribute_before_type_cast when written as Time" do
    @person.birth_date_and_time = Time.mktime(2000, 1, 1, 2, 3, 4)
    @person.birth_date_and_time_before_type_cast.should be_kind_of(Time)
  end

  it "should return Time object for datetime attribute read method when assigned Time object" do
    @person.birth_date_and_time = Time.now
    @person.birth_date_and_time.should be_kind_of(Time)
  end

  it "should return Time object for datetime attribute read method when assigned string" do
    @person.birth_date_and_time = "2000-01-01 02:03:04"
    @person.birth_date_and_time.should be_kind_of(Time)
  end    
 
  it "should return Date object for date attribute read method when assigned Date object" do
    @person.birth_date = Date.today
    @person.birth_date.should be_kind_of(Date)
  end  
 
  it "should return Date object for date attribute read method when assigned string" do
    @person.birth_date = '2000-01-01'
    @person.birth_date.should be_kind_of(Date)
  end 
 
  it "should return nil when time is invalid" do
    @person.birth_date_and_time = "2000-01-32 02:03:04"
    @person.birth_date_and_time.should be_nil
  end

  it "should not save invalid date value to database" do        
    time_string = "2000-01-32 02:03:04"
    @person = Person.new
    @person.birth_date_and_time = time_string
    @person.save
    @person.reload
    @person.birth_date_and_time_before_type_cast.should be_nil
  end
  
  unless RAILS_VER < '2.1'
    it "should return stored time string as Time with correct timezone" do
      Time.zone = 'Melbourne'
      time_string = "2000-06-01 02:03:04"
      @person.birth_date_and_time = time_string
      @person.birth_date_and_time.strftime('%Y-%m-%d %H:%M:%S %Z %z').should == time_string + ' EST +1000'
    end

    it "should return time object from database in correct timezone" do        
      Time.zone = 'Melbourne'
      time_string = "2000-06-01 09:00:00"
      @person = Person.new
      @person.birth_date_and_time = time_string
      @person.save
      @person.reload
      @person.birth_date_and_time.strftime('%Y-%m-%d %H:%M:%S %Z %z').should == time_string + ' EST +1000'
    end
    
    describe "dirty attributes" do
    
      it "should return true for attribute changed? when value updated" do
        time_string = "2000-01-01 02:03:04"
        @person.birth_date_and_time = time_string
        @person.birth_date_and_time_changed?.should be_true
      end
    
      it "should show changes when time attribute changed from nil to Time object" do
        time_string = "2000-01-01 02:03:04"
        @person.birth_date_and_time = time_string
        time = @person.birth_date_and_time
        @person.changes.should == {"birth_date_and_time" => [nil, time]}
      end
      
      it "should show changes when time attribute changed from Time object to nil" do
        time_string = "2020-01-01 02:03:04"
        @person.birth_date_and_time = time_string
        @person.save false
        @person.reload
        time = @person.birth_date_and_time
        @person.birth_date_and_time = nil
        @person.changes.should == {"birth_date_and_time" => [time, nil]}
      end
      
      it "should show no changes when assigned same value as Time object" do
        time_string = "2020-01-01 02:03:04"
        @person.birth_date_and_time = time_string
        @person.save false
        @person.reload
        time = @person.birth_date_and_time
        @person.birth_date_and_time = time
        @person.changes.should == {}
      end
      
      it "should show no changes when assigned same value as time string" do
        time_string = "2020-01-01 02:03:04"
        @person.birth_date_and_time = time_string
        @person.save false
        @person.reload
        @person.birth_date_and_time = time_string
        @person.changes.should == {}
      end
      
    end
  else
    
    it "should return time object from database in default timezone" do        
      ActiveRecord::Base.default_timezone = :utc
      time_string = "2000-01-01 09:00:00"
      @person = Person.new
      @person.birth_date_and_time = time_string
      @person.save
      @person.reload
      @person.birth_date_and_time.strftime('%Y-%m-%d %H:%M:%S %Z').should == time_string + ' GMT'
    end
      
  end
  
  it "should return same time object on repeat reads on existing object" do
    Time.zone = 'Melbourne' unless RAILS_VER < '2.1'
    time_string = "2000-01-01 09:00:00"
    @person = Person.new
    @person.birth_date_and_time = time_string
    @person.save!
    @person.reload
    time = @person.birth_date_and_time
    @person.birth_date_and_time.should == time
  end
  
  it "should return same date object on repeat reads on existing object" do
    date_string = Date.today
    @person = Person.new
    @person.birth_date = date_string
    @person.save!
    @person.reload
    date = @person.birth_date
    @person.birth_date.should == date
  end
  
  it "should return correct date value after new value assigned" do
    today = Date.today
    tomorrow = Date.today + 1.day    
    @person = Person.new
    @person.birth_date = today
    @person.birth_date.should == today
    @person.birth_date = tomorrow
    @person.birth_date.should == tomorrow
  end
 
  it "should update date attribute on existing object" do
    today = Date.today
    tomorrow = Date.today + 1.day
    @person = Person.create(:birth_date => today)
    @person.birth_date = tomorrow
    @person.save!
    @person.reload
    @person.birth_date.should == tomorrow
  end
 
end