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require 'cases/helper'
require 'models/post'
module ActiveRecord
class RelationMutationTest < ActiveSupport::TestCase
class FakeKlass < Struct.new(:table_name, :name)
extend ActiveRecord::Delegation::DelegateCache
inherited self
def connection
Post.connection
end
def relation_delegate_class(klass)
self.class.relation_delegate_class(klass)
end
def attribute_alias?(name)
false
end
def sanitize_sql(sql)
sql
end
end
def relation
@relation ||= Relation.new FakeKlass.new('posts'), Post.arel_table, Post.predicate_builder
end
(Relation::MULTI_VALUE_METHODS - [:references, :extending, :order, :unscope, :select]).each do |method|
test "##{method}!" do
assert relation.public_send("#{method}!", :foo).equal?(relation)
assert_equal [:foo], relation.public_send("#{method}_values")
end
end
test "#_select!" do
assert relation.public_send("_select!", :foo).equal?(relation)
assert_equal [:foo], relation.public_send("select_values")
end
test '#order!' do
assert relation.order!('name ASC').equal?(relation)
assert_equal ['name ASC'], relation.order_values
end
test '#order! with symbol prepends the table name' do
assert relation.order!(:name).equal?(relation)
node = relation.order_values.first
assert node.ascending?
assert_equal :name, node.expr.name
assert_equal "posts", node.expr.relation.name
end
test '#order! on non-string does not attempt regexp match for references' do
obj = Object.new
obj.expects(:=~).never
assert relation.order!(obj)
assert_equal [obj], relation.order_values
end
test '#references!' do
assert relation.references!(:foo).equal?(relation)
assert relation.references_values.include?('foo')
end
test 'extending!' do
mod, mod2 = Module.new, Module.new
assert relation.extending!(mod).equal?(relation)
assert_equal [mod], relation.extending_values
assert relation.is_a?(mod)
relation.extending!(mod2)
assert_equal [mod, mod2], relation.extending_values
end
test 'extending! with empty args' do
relation.extending!
assert_equal [], relation.extending_values
end
(Relation::SINGLE_VALUE_METHODS - [:from, :lock, :reordering, :reverse_order, :create_with]).each do |method|
test "##{method}!" do
assert relation.public_send("#{method}!", :foo).equal?(relation)
assert_equal :foo, relation.public_send("#{method}_value")
end
end
test '#from!' do
assert relation.from!('foo').equal?(relation)
assert_equal ['foo', nil], relation.from_value
end
test '#lock!' do
assert relation.lock!('foo').equal?(relation)
assert_equal 'foo', relation.lock_value
end
test '#reorder!' do
@relation = self.relation.order('foo')
assert relation.reorder!('bar').equal?(relation)
assert_equal ['bar'], relation.order_values
assert relation.reordering_value
end
test '#reorder! with symbol prepends the table name' do
assert relation.reorder!(:name).equal?(relation)
node = relation.order_values.first
assert node.ascending?
assert_equal :name, node.expr.name
assert_equal "posts", node.expr.relation.name
end
test 'reverse_order!' do
@relation = Post.order('title ASC, comments_count DESC')
relation.reverse_order!
assert_equal 'title DESC', relation.order_values.first
assert_equal 'comments_count ASC', relation.order_values.last
relation.reverse_order!
assert_equal 'title ASC', relation.order_values.first
assert_equal 'comments_count DESC', relation.order_values.last
end
test 'create_with!' do
assert relation.create_with!(foo: 'bar').equal?(relation)
assert_equal({foo: 'bar'}, relation.create_with_value)
end
test 'test_merge!' do
assert relation.merge!(where: :foo).equal?(relation)
assert_equal [:foo], relation.where_values
end
test 'merge with a proc' do
assert_equal [:foo], relation.merge(-> { where(:foo) }).where_values
end
test 'none!' do
assert relation.none!.equal?(relation)
assert_equal [NullRelation], relation.extending_values
assert relation.is_a?(NullRelation)
end
test 'distinct!' do
relation.distinct! :foo
assert_equal :foo, relation.distinct_value
assert_equal :foo, relation.uniq_value # deprecated access
end
test 'uniq! was replaced by distinct!' do
relation.uniq! :foo
assert_equal :foo, relation.distinct_value
assert_equal :foo, relation.uniq_value # deprecated access
end
end
end
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