* object.c (rb_mod_const_get): const_get accepts qualified constant

  strings.  e.g. Object.const_get("Foo::Bar::Baz") [ruby-core:41404]

* test/ruby/test_module.rb: tests for new behavior

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37335 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 30 insertions, 0 deletions

diff --git a/test/ruby/test_module.rb b/test/ruby/test_module.rb
index db3f1fde3c..774139b9bc 100644
--- a/test/ruby/test_module.rb
+++ b/test/ruby/test_module.rb
@@ -245,6 +245,36 @@ class TestModule < Test::Unit::TestCase
     assert_equal(Math::PI, Math.const_get(:PI))
   end
 
+  def test_nested_get
+    assert_equal Other, Object.const_get([self.class, Other].join('::'))
+    assert_equal User::USER, self.class.const_get([User, 'USER'].join('::'))
+  end
+
+  def test_nested_get_symbol
+    const = [self.class, Other].join('::').to_sym
+
+    assert_equal Other, Object.const_get(const)
+    assert_equal User::USER, self.class.const_get([User, 'USER'].join('::'))
+  end
+
+  def test_nested_get_const_missing
+    classes = []
+    klass = Class.new {
+      define_singleton_method(:const_missing) { |name|
+	classes << name
+	klass
+      }
+    }
+    klass.const_get("Foo::Bar::Baz")
+    assert_equal [:Foo, :Bar, :Baz], classes
+  end
+
+  def test_nested_bad_class
+    assert_raises(TypeError) do
+      self.class.const_get([User, 'USER', 'Foo'].join('::'))
+    end
+  end
+
   def test_const_set
     assert(!Other.const_defined?(:KOALA))
     Other.const_set(:KOALA, 99)