1 files changed, 44 insertions, 0 deletions
diff --git a/spec/ruby/core/module/remove_class_variable_spec.rb b/spec/ruby/core/module/remove_class_variable_spec.rb
new file mode 100644
index 0000000000..adf2c1d1f8
--- /dev/null
+++ b/spec/ruby/core/module/remove_class_variable_spec.rb
@@ -0,0 +1,44 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Module#remove_class_variable" do
+  it "removes class variable" do
+    m = ModuleSpecs::MVars.dup
+    m.send(:remove_class_variable, :@@mvar)
+    m.class_variable_defined?(:@@mvar).should == false
+  end
+
+  it "returns the value of removing class variable" do
+    m = ModuleSpecs::MVars.dup
+    m.send(:remove_class_variable, :@@mvar).should == :mvar
+  end
+
+  it "removes a class variable defined in a metaclass" do
+    obj = mock("metaclass class variable")
+    meta = obj.singleton_class
+    meta.send :class_variable_set, :@@var, 1
+    meta.send(:remove_class_variable, :@@var).should == 1
+    meta.class_variable_defined?(:@@var).should be_false
+  end
+
+  it "raises a NameError when removing class variable declared in included module" do
+    c = ModuleSpecs::RemoveClassVariable.new { include ModuleSpecs::MVars.dup }
+    lambda { c.send(:remove_class_variable, :@@mvar) }.should raise_error(NameError)
+  end
+
+  it "raises a NameError when passed a symbol with one leading @" do
+    lambda { ModuleSpecs::MVars.send(:remove_class_variable, :@mvar) }.should raise_error(NameError)
+  end
+
+  it "raises a NameError when passed a symbol with no leading @" do
+    lambda { ModuleSpecs::MVars.send(:remove_class_variable, :mvar)  }.should raise_error(NameError)
+  end
+
+  it "raises a NameError when an uninitialized class variable is given" do
+    lambda { ModuleSpecs::MVars.send(:remove_class_variable, :@@nonexisting_class_variable) }.should raise_error(NameError)
+  end
+
+  it "is public" do
+    Module.should_not have_private_instance_method(:remove_class_variable)
+  end
+end