From 28375dd621befc495dfc77a6558534951be5ef54 Mon Sep 17 00:00:00 2001 From: Kohei Suzuki Date: Fri, 10 Apr 2015 18:20:02 +0900 Subject: Raise ArgumentError when find_by receives no arguments It fixes the strange error saying undefined method `take'. ``` RelationTest#test_find_by_without_arg_behaves_same_with_find_by({}): NoMethodError: undefined method `take' for # ``` --- activerecord/test/cases/relations_test.rb | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'activerecord/test/cases/relations_test.rb') diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb index 0cf44388fa..b8e2041b6d 100644 --- a/activerecord/test/cases/relations_test.rb +++ b/activerecord/test/cases/relations_test.rb @@ -1657,6 +1657,10 @@ class RelationTest < ActiveRecord::TestCase assert_sql(/^((?!ORDER).)*$/) { Post.all.find_by(author_id: 2) } end + test "find_by requires at least one argument" do + assert_raises(ArgumentError) { Post.all.find_by } + end + test "find_by! with hash conditions returns the first matching record" do assert_equal posts(:eager_other), Post.order(:id).find_by!(author_id: 2) end @@ -1679,6 +1683,10 @@ class RelationTest < ActiveRecord::TestCase end end + test "find_by! requires at least one argument" do + assert_raises(ArgumentError) { Post.all.find_by! } + end + test "loaded relations cannot be mutated by multi value methods" do relation = Post.all relation.to_a -- cgit v1.2.3