vendor/rails/activesupport/test/core_ext/module/attr_internal_test.rb

   1 require File.dirname(__FILE__) + '/../../abstract_unit'
   2
   3 class AttrInternalTest < Test::Unit::TestCase
   4   def setup
   5     @target = Class.new
   6     @instance = @target.new
   7   end
   8
   9   def test_reader
  10     assert_nothing_raised { @target.attr_internal_reader :foo }
  11
  12     assert !@instance.instance_variable_defined?('@_foo')
  13     assert_raise(NoMethodError) { @instance.foo = 1 }
  14
  15     @instance.instance_variable_set('@_foo', 1)
  16     assert_nothing_raised { assert_equal 1, @instance.foo }
  17   end
  18
  19   def test_writer
  20     assert_nothing_raised { @target.attr_internal_writer :foo }
  21
  22     assert !@instance.instance_variable_defined?('@_foo')
  23     assert_nothing_raised { assert_equal 1, @instance.foo = 1 }
  24
  25     assert_equal 1, @instance.instance_variable_get('@_foo')
  26     assert_raise(NoMethodError) { @instance.foo }
  27   end
  28
  29   def test_accessor
  30     assert_nothing_raised { @target.attr_internal :foo }
  31
  32     assert !@instance.instance_variable_defined?('@_foo')
  33     assert_nothing_raised { assert_equal 1, @instance.foo = 1 }
  34
  35     assert_equal 1, @instance.instance_variable_get('@_foo')
  36     assert_nothing_raised { assert_equal 1, @instance.foo }
  37   end
  38
  39   def test_naming_format
  40     assert_equal '@_%s', @target.attr_internal_naming_format
  41     assert_nothing_raised { @target.attr_internal_naming_format = '@abc%sdef' }
  42     @target.attr_internal :foo
  43
  44     assert !@instance.instance_variable_defined?('@_foo')
  45     assert !@instance.instance_variable_defined?('@abcfoodef')
  46     assert_nothing_raised { @instance.foo = 1 }
  47     assert !@instance.instance_variable_defined?('@_foo')
  48     assert @instance.instance_variable_defined?('@abcfoodef')
  49   ensure
  50     @target.attr_internal_naming_format = '@_%s'
  51   end
  52 end