+++ /dev/null
-require File.expand_path(File.dirname(__FILE__) + '/edgecase')
-
-class AboutObjects < EdgeCase::Koan
- def test_everything_is_an_object
- assert_equal __, 1.is_a?(Object)
- assert_equal __, 1.5.is_a?(Object)
- assert_equal __, "string".is_a?(Object)
- assert_equal __, nil.is_a?(Object)
- assert_equal __, Object.is_a?(Object)
- end
-
- def test_objects_can_be_converted_to_strings
- assert_equal __, 123.to_s
- assert_equal __, nil.to_s
- end
-
- def test_objects_can_be_inspected
- assert_equal __, 123.inspect
- assert_equal __, nil.inspect
- end
-
- def test_every_object_has_an_id
- obj = Object.new
- assert_equal __, obj.object_id.class
- end
-
- def test_every_object_has_different_id
- obj = Object.new
- another_obj = Object.new
- assert_equal __, obj.object_id != another_obj.object_id
- end
-
- def test_some_system_objects_always_have_the_same_id
- assert_equal __, false.object_id
- assert_equal __, true.object_id
- assert_equal __, nil.object_id
- end
-
- def test_small_integers_have_fixed_ids
- assert_equal __, 0.object_id
- assert_equal __, 1.object_id
- assert_equal __, 2.object_id
- assert_equal __, 100.object_id
-
- # THINK ABOUT IT:
- # What pattern do the object IDs for small integers follow?
- end
-
- def test_clone_creates_a_different_object
- obj = Object.new
- copy = obj.clone
-
- assert_equal __, obj != copy
- assert_equal __, obj.object_id != copy.object_id
- end
-end