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require "cases/helper"
require 'models/post'
require 'models/comment'
require 'models/author'
require 'models/rating'
module ActiveRecord
class RelationTest < ActiveRecord::TestCase
fixtures :posts, :comments, :authors
class FakeKlass < Struct.new(:table_name, :name)
extend ActiveRecord::Delegation::DelegateCache
inherited self
def self.connection
Post.connection
end
end
def test_construction
relation = Relation.new FakeKlass, :b
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('posts'), :b
assert_equal 'posts', 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_bad_constants_raise_errors
assert_raises(NameError) do
ActiveRecord::Relation::HelloWorld
end
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 = Class.new(FakeKlass) do
def self.sanitize_sql(args)
raise unless args == ['foo = ?', 'bar']
'foo = bar'
end
end
relation = Relation.new(klass, :b)
relation.merge!(where: ['foo = ?', 'bar'])
assert_equal ['foo = bar'], relation.where_values
end
def test_merging_readonly_false
relation = Relation.new FakeKlass, :b
readonly_false_relation = relation.readonly(false)
# test merging in both directions
assert_equal false, relation.merge(readonly_false_relation).readonly_value
assert_equal false, readonly_false_relation.merge(relation).readonly_value
end
def test_relation_merging_with_merged_joins_as_symbols
special_comments_with_ratings = SpecialComment.joins(:ratings)
posts_with_special_comments_with_ratings = Post.group("posts.id").joins(:special_comments).merge(special_comments_with_ratings)
assert_equal 3, authors(:david).posts.merge(posts_with_special_comments_with_ratings).count.length
end
def test_respond_to_for_non_selected_element
post = Post.select(:title).first
assert_equal false, post.respond_to?(:body), "post should not respond_to?(:body) since invoking it raises exception"
silence_warnings { post = Post.select("'title' as post_title").first }
assert_equal false, post.respond_to?(:title), "post should not respond_to?(:body) since invoking it raises exception"
end
def test_relation_merging_with_merged_joins_as_strings
join_string = "LEFT OUTER JOIN #{Rating.quoted_table_name} ON #{SpecialComment.quoted_table_name}.id = #{Rating.quoted_table_name}.comment_id"
special_comments_with_ratings = SpecialComment.joins join_string
posts_with_special_comments_with_ratings = Post.group("posts.id").joins(:special_comments).merge(special_comments_with_ratings)
assert_equal 3, authors(:david).posts.merge(posts_with_special_comments_with_ratings).count.length
end
end
end
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