80 lines
1.9 KiB
Ruby
80 lines
1.9 KiB
Ruby
require File.expand_path(File.dirname(__FILE__) + '/edgecase')
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class AboutScope < EdgeCase::Koan
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module Jims
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class Dog
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def identify
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:jims_dog
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end
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end
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end
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module Joes
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class Dog
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def identify
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:joes_dog
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end
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end
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end
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def test_dog_is_not_available_in_the_current_scope
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assert_raise(___(NameError)) do
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fido = Dog.new
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end
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end
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def test_you_can_reference_nested_classes_using_the_scope_operator
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fido = Jims::Dog.new
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rover = Joes::Dog.new
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assert_equal __(:jims_dog), fido.identify
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assert_equal __(:joes_dog), rover.identify
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assert_equal __(true), fido.class != rover.class
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assert_equal __(true), Jims::Dog != Joes::Dog
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end
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# ------------------------------------------------------------------
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class String
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end
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def test_bare_bones_class_names_assume_the_current_scope
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assert_equal __(true), AboutScope::String == String
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end
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def test_nested_string_is_not_the_same_as_the_system_string
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assert_equal __(false), String == "HI".class
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end
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def test_use_the_prefix_scope_operator_to_force_the_global_scope
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assert_equal __(true), ::String == "HI".class
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end
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# ------------------------------------------------------------------
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PI = 3.1416
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def test_constants_are_defined_with_an_initial_uppercase_letter
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assert_equal __(3.1416), PI
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end
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# ------------------------------------------------------------------
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MyString = ::String
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def test_class_names_are_just_constants
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assert_equal __(true), MyString == ::String
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assert_equal __(true), MyString == "HI".class
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end
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def test_constants_can_be_looked_up_explicitly
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assert_equal __(true), PI == AboutScope.const_get("PI")
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assert_equal __(true), MyString == AboutScope.const_get("MyString")
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end
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def test_you_can_get_a_list_of_constants_for_any_class_or_module
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assert_equal __(["Dog"], [:Dog]), Jims.constants
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assert Object.constants.size > _n_(10)
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end
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end
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