attr_internal to support namespacing and deprecation

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4692 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 52 insertions, 0 deletions

diff --git a/activesupport/test/core_ext/module/attr_internal_test.rb b/activesupport/test/core_ext/module/attr_internal_test.rb
new file mode 100644
index 0000000000..25b049f619
--- /dev/null
+++ b/activesupport/test/core_ext/module/attr_internal_test.rb
@@ -0,0 +1,52 @@
+require File.dirname(__FILE__) + '/../../abstract_unit'
+
+class AttrInternalTest < Test::Unit::TestCase
+  def setup
+    @target = Class.new
+    @instance = @target.new
+  end
+
+  def test_attr_internal_reader
+    assert_nothing_raised { @target.attr_internal_reader :foo }
+
+    assert !@instance.instance_variables.include?('@_foo')
+    assert_raise(NoMethodError) { @instance.foo = 1 }
+
+    @instance.instance_variable_set('@_foo', 1)
+    assert_nothing_raised { assert_equal 1, @instance.foo }
+  end
+
+  def test_attr_internal_writer
+    assert_nothing_raised { @target.attr_internal_writer :foo }
+
+    assert !@instance.instance_variables.include?('@_foo')
+    assert_nothing_raised { assert_equal 1, @instance.foo = 1 }
+
+    assert_equal 1, @instance.instance_variable_get('@_foo')
+    assert_raise(NoMethodError) { @instance.foo }
+  end
+
+  def test_attr_internal_accessor
+    assert_nothing_raised { @target.attr_internal :foo }
+
+    assert !@instance.instance_variables.include?('@_foo')
+    assert_nothing_raised { assert_equal 1, @instance.foo = 1 }
+
+    assert_equal 1, @instance.instance_variable_get('@_foo')
+    assert_nothing_raised { assert_equal 1, @instance.foo }
+  end
+
+  def test_attr_internal_naming_format
+    assert_equal '@_%s', @target.attr_internal_naming_format
+    assert_nothing_raised { @target.attr_internal_naming_format = '@abc%sdef' }
+    @target.attr_internal :foo
+
+    assert !@instance.instance_variables.include?('@_foo')
+    assert !@instance.instance_variables.include?('@abcfoodef')
+    assert_nothing_raised { @instance.foo = 1 }
+    assert !@instance.instance_variables.include?('@_foo')
+    assert @instance.instance_variables.include?('@abcfoodef')
+  ensure
+    @target.attr_internal_naming_format = '@_%s'
+  end
+end