diff options
Diffstat (limited to 'activesupport/test/core_ext/object_and_class_ext_test.rb')
-rw-r--r-- | activesupport/test/core_ext/object_and_class_ext_test.rb | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/object_and_class_ext_test.rb b/activesupport/test/core_ext/object_and_class_ext_test.rb index 29e18d5ae1..4a554e7602 100644 --- a/activesupport/test/core_ext/object_and_class_ext_test.rb +++ b/activesupport/test/core_ext/object_and_class_ext_test.rb @@ -6,6 +6,18 @@ class ClassB < ClassA; end class ClassC < ClassB; end class ClassD < ClassA; end +module Bar + def bar; end +end + +module Baz + def baz; end +end + +class Foo + include Bar +end + class ClassExtTest < Test::Unit::TestCase def test_methods assert defined?(ClassB) @@ -30,4 +42,66 @@ class ObjectTests < Test::Unit::TestCase suppress(LoadError, ArgumentError) { raise LoadError } suppress(LoadError, ArgumentError) { raise ArgumentError } end + + def test_extended_by + foo = Foo.new + assert_equal [Bar], foo.extended_by + foo.extend(Baz) + assert_equal %w(Bar Baz), foo.extended_by.map {|mod| mod.name}.sort + end + + def test_extend_with_included_modules_from + foo, object = Foo.new, Object.new + assert !object.respond_to?(:bar) + assert !object.respond_to?(:baz) + + object.extend_with_included_modules_from(foo) + assert object.respond_to?(:bar) + assert !object.respond_to?(:baz) + + foo.extend(Baz) + object.extend_with_included_modules_from(foo) + assert object.respond_to?(:bar) + assert object.respond_to?(:baz) + end + end + +class ObjectInstanceVariableTest < Test::Unit::TestCase + def setup + @source, @dest = Object.new, Object.new + @source.instance_variable_set(:@bar, 'bar') + @source.instance_variable_set(:@baz, 'baz') + end + + def test_copy_instance_variables_from_without_explicit_excludes + assert_equal [], @dest.instance_variables + @dest.copy_instance_variables_from(@source) + + assert_equal %w(@bar @baz), @dest.instance_variables.sort + %w(@bar @baz).each do |name| + assert_equal @source.instance_variable_get(name).object_id, + @dest.instance_variable_get(name).object_id + end + end + + def test_copy_instance_variables_from_with_explicit_excludes + @dest.copy_instance_variables_from(@source, ['@baz']) + assert_nil @dest.instance_variable_get('@baz') + assert_equal 'bar', @dest.instance_variable_get('@bar') + end + + def test_copy_instance_variables_automatically_excludes_protected_instance_variables + @source.instance_variable_set(:@quux, 'quux') + class << @source + def protected_instance_variables + ['@bar', :@quux] + end + end + + @dest.copy_instance_variables_from(@source) + assert_nil @dest.instance_variable_get('@bar') + assert_nil @dest.instance_variable_get('@quux') + assert_equal 'baz', @dest.instance_variable_get('@baz') + end +end
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