diff options
Diffstat (limited to 'activerecord/test/cases/attribute_test.rb')
| -rw-r--r-- | activerecord/test/cases/attribute_test.rb | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/activerecord/test/cases/attribute_test.rb b/activerecord/test/cases/attribute_test.rb index 0f216b7a13..a24a4fc6a4 100644 --- a/activerecord/test/cases/attribute_test.rb +++ b/activerecord/test/cases/attribute_test.rb @@ -182,12 +182,49 @@ module ActiveRecord assert attribute.has_been_read? end + test "an attribute is not changed if it hasn't been assigned or mutated" do + attribute = Attribute.from_database(:foo, 1, Type::Value.new) + + refute attribute.changed? + end + + test "an attribute is changed if it's been assigned a new value" do + attribute = Attribute.from_database(:foo, 1, Type::Value.new) + changed = attribute.with_value_from_user(2) + + assert changed.changed? + end + + test "an attribute is not changed if it's assigned the same value" do + attribute = Attribute.from_database(:foo, 1, Type::Value.new) + unchanged = attribute.with_value_from_user(1) + + refute unchanged.changed? + end + test "an attribute can not be mutated if it has not been read, and skips expensive calculations" do type_which_raises_from_all_methods = Object.new attribute = Attribute.from_database(:foo, "bar", type_which_raises_from_all_methods) - assert_not attribute.changed_in_place_from?("bar") + assert_not attribute.changed_in_place? + end + + test "an attribute is changed if it has been mutated" do + attribute = Attribute.from_database(:foo, "bar", Type::String.new) + attribute.value << "!" + + assert attribute.changed_in_place? + assert attribute.changed? + end + + test "an attribute can forget its changes" do + attribute = Attribute.from_database(:foo, "bar", Type::String.new) + changed = attribute.with_value_from_user("foo") + forgotten = changed.forgetting_assignment + + assert changed.changed? # sanity check + refute forgotten.changed? end test "with_value_from_user validates the value" do |