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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)
end
def test_construction
relation = nil
assert_nothing_raised do
relation = Relation.new :a, :b
end
assert_equal :a, relation.klass
assert_equal :b, relation.table
assert !relation.loaded, 'relation is not loaded'
end
def test_single_values
assert_equal [:limit, :offset, :lock, :readonly, :create_with, :from].map(&:to_s).sort,
Relation::SINGLE_VALUE_METHODS.map(&:to_s).sort
end
def test_initialize_single_values
relation = Relation.new :a, :b
Relation::SINGLE_VALUE_METHODS.each do |method|
assert_nil relation.send("#{method}_value"), method.to_s
end
end
def test_association_methods
assert_equal [:includes, :eager_load, :preload].map(&:to_s).sort,
Relation::ASSOCIATION_METHODS.map(&:to_s).sort
end
def test_initialize_association_methods
relation = Relation.new :a, :b
Relation::ASSOCIATION_METHODS.each do |method|
assert_equal [], relation.send("#{method}_values"), method.to_s
end
end
def test_multi_value_methods
assert_equal [:select, :group, :order, :joins, :where, :having, :bind].map(&:to_s).sort,
Relation::MULTI_VALUE_METHODS.map(&:to_s).sort
end
def test_multi_value_initialize
relation = Relation.new :a, :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 :a, :b
assert_equal [], relation.extensions
end
def test_empty_where_values_hash
relation = Relation.new :a, :b
assert_equal({}, relation.where_values_hash)
relation.where_values << :hello
assert_equal({}, relation.where_values_hash)
end
def test_has_values
relation = Relation.new Post, Post.arel_table
relation.where_values << 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_values << 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_values << 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 :a, :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_values << 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_values << 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 :a, :b
assert !relation.eager_loading?
end
def test_eager_load_values
relation = Relation.new :a, :b
relation.eager_load_values << :b
assert relation.eager_loading?
end
end
end
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