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test.rb
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test.rb
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require 'active_record'
require 'active_record/diff'
require 'test/unit'
class Person < ActiveRecord::Base
include ActiveRecord::Diff
end
ActiveRecord::Base.establish_connection('adapter' => 'sqlite3', 'database' => ':memory:')
ActiveRecord::Schema.define do
create_table :people do |table|
table.column :name, :string
table.column :email_address, :string
end
end
Person.create :name => 'alice', :email_address => 'alice@example.org'
Person.create :name => 'bob', :email_address => 'bob@example.org'
Person.create :name => 'eve', :email_address => 'bob@example.org'
class TestCase < Test::Unit::TestCase
def setup
@people = Person.find(:all)
@alice, @bob, @eve = *@people
end
def keysort(hash)
hash.sort_by { |k, v| k.to_s }
end
def assert_diff(a, b, diff)
assert_equal keysort(diff), keysort(a.diff(b))
end
def test_diff_query
@people.each do |person|
@people.each do |other_person|
if other_person == person
assert_equal false, person.diff?(other_person)
else
assert person.diff?(other_person)
end
end
end
end
def test_diff_against_other_record
assert_diff @bob, @alice, {:name => %w( bob alice ), :email_address => %w( bob@example.org alice@example.org )}
assert_diff @bob, @eve, {:name => %w( bob eve )}
end
def test_diff_against_saved_self
assert ! @eve.diff?
@eve.name = 'alice'
assert @eve.diff?
assert_diff @eve, nil, {:name => ['eve', 'alice']}
end
def test_diff_against_hash
assert_diff @bob, {:name => 'joe'}, {:name => ['bob', 'joe']}
end
def test_inclusion_and_exclusion
Person.diff :include => [:id], :exclude => [:email_address]
assert_diff @alice, @bob, {:id => [1, 2], :name => %w( alice bob )}
end
end