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Diffstat (limited to 'activerecord/test/cases/attribute_test.rb')
-rw-r--r-- | activerecord/test/cases/attribute_test.rb | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/activerecord/test/cases/attribute_test.rb b/activerecord/test/cases/attribute_test.rb index 39a976fcc8..eac73e11e8 100644 --- a/activerecord/test/cases/attribute_test.rb +++ b/activerecord/test/cases/attribute_test.rb @@ -169,5 +169,24 @@ module ActiveRecord second = Attribute.from_user(:foo, 1, Type::Integer.new) assert_not_equal first, second end + + test "an attribute has not been read by default" do + attribute = Attribute.from_database(:foo, 1, Type::Value.new) + assert_not attribute.has_been_read? + end + + test "an attribute has been read when its value is calculated" do + attribute = Attribute.from_database(:foo, 1, Type::Value.new) + attribute.value + assert attribute.has_been_read? + 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") + end end end |