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require "cases/helper"
require 'models/post'
require 'models/comment'
module ActiveRecord
class RelationTest < ActiveRecord::TestCase
fixtures :posts, :comments
class FakeKlass < Struct.new(:table_name, :name)
end
def test_construction
relation = nil
assert_nothing_raised do
relation = Relation.new FakeKlass, :b
end
assert_equal FakeKlass, relation.klass
assert_equal :b, relation.table
assert !relation.loaded, 'relation is not loaded'
end
def test_responds_to_model_and_returns_klass
relation = Relation.new FakeKlass, :b
assert_equal FakeKlass, relation.model
end
def test_initialize_single_values
relation = Relation.new FakeKlass, :b
(Relation::SINGLE_VALUE_METHODS - [:create_with]).each do |method|
assert_nil relation.send("#{method}_value"), method.to_s
end
assert_equal({}, relation.create_with_value)
end
def test_multi_value_initialize
relation = Relation.new FakeKlass, :b
Relation::MULTI_VALUE_METHODS.each do |method|
assert_equal [], relation.send("#{method}_values"), method.to_s
end
end
def test_extensions
relation = Relation.new FakeKlass, :b
assert_equal [], relation.extensions
end
def test_empty_where_values_hash
relation = Relation.new FakeKlass, :b
assert_equal({}, relation.where_values_hash)
relation.where! :hello
assert_equal({}, relation.where_values_hash)
end
def test_has_values
relation = Relation.new Post, Post.arel_table
relation.where! relation.table[:id].eq(10)
assert_equal({:id => 10}, relation.where_values_hash)
end
def test_values_wrong_table
relation = Relation.new Post, Post.arel_table
relation.where! Comment.arel_table[:id].eq(10)
assert_equal({}, relation.where_values_hash)
end
def test_tree_is_not_traversed
relation = Relation.new Post, Post.arel_table
left = relation.table[:id].eq(10)
right = relation.table[:id].eq(10)
combine = left.and right
relation.where! combine
assert_equal({}, relation.where_values_hash)
end
def test_table_name_delegates_to_klass
relation = Relation.new FakeKlass.new('foo'), :b
assert_equal 'foo', relation.table_name
end
def test_scope_for_create
relation = Relation.new FakeKlass, :b
assert_equal({}, relation.scope_for_create)
end
def test_create_with_value
relation = Relation.new Post, Post.arel_table
hash = { :hello => 'world' }
relation.create_with_value = hash
assert_equal hash, relation.scope_for_create
end
def test_create_with_value_with_wheres
relation = Relation.new Post, Post.arel_table
relation.where! relation.table[:id].eq(10)
relation.create_with_value = {:hello => 'world'}
assert_equal({:hello => 'world', :id => 10}, relation.scope_for_create)
end
# FIXME: is this really wanted or expected behavior?
def test_scope_for_create_is_cached
relation = Relation.new Post, Post.arel_table
assert_equal({}, relation.scope_for_create)
relation.where! relation.table[:id].eq(10)
assert_equal({}, relation.scope_for_create)
relation.create_with_value = {:hello => 'world'}
assert_equal({}, relation.scope_for_create)
end
def test_empty_eager_loading?
relation = Relation.new FakeKlass, :b
assert !relation.eager_loading?
end
def test_eager_load_values
relation = Relation.new FakeKlass, :b
relation.eager_load! :b
assert relation.eager_loading?
end
def test_references_values
relation = Relation.new FakeKlass, :b
assert_equal [], relation.references_values
relation = relation.references(:foo).references(:omg, :lol)
assert_equal ['foo', 'omg', 'lol'], relation.references_values
end
def test_references_values_dont_duplicate
relation = Relation.new FakeKlass, :b
relation = relation.references(:foo).references(:foo)
assert_equal ['foo'], relation.references_values
end
test 'merging a hash into a relation' do
relation = Relation.new FakeKlass, :b
relation = relation.merge where: :lol, readonly: true
assert_equal [:lol], relation.where_values
assert_equal true, relation.readonly_value
end
test 'merging an empty hash into a relation' do
assert_equal [], Relation.new(FakeKlass, :b).merge({}).where_values
end
test 'merging a hash with unknown keys raises' do
assert_raises(ArgumentError) { Relation::HashMerger.new(nil, omg: 'lol') }
end
test '#values returns a dup of the values' do
relation = Relation.new(FakeKlass, :b).where! :foo
values = relation.values
values[:where] = nil
assert_not_nil relation.where_values
end
test 'relations can be created with a values hash' do
relation = Relation.new(FakeKlass, :b, where: [:foo])
assert_equal [:foo], relation.where_values
end
test 'merging a single where value' do
relation = Relation.new(FakeKlass, :b)
relation.merge!(where: :foo)
assert_equal [:foo], relation.where_values
end
test 'merging a hash interpolates conditions' do
klass = stub_everything
klass.stubs(:sanitize_sql).with(['foo = ?', 'bar']).returns('foo = bar')
relation = Relation.new(klass, :b)
relation.merge!(where: ['foo = ?', 'bar'])
assert_equal ['foo = bar'], relation.where_values
end
end
class RelationMutationTest < ActiveSupport::TestCase
class FakeKlass < Struct.new(:table_name, :name)
end
def relation
@relation ||= Relation.new FakeKlass, :b
end
(Relation::MULTI_VALUE_METHODS - [:references, :extending]).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 '#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 'reverse_order!' do
assert relation.reverse_order!.equal?(relation)
assert relation.reverse_order_value
relation.reverse_order!
assert !relation.reverse_order_value
end
test 'create_with!' do
assert relation.create_with!(foo: 'bar').equal?(relation)
assert_equal({foo: 'bar'}, relation.create_with_value)
end
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
end
end
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