diff options
Diffstat (limited to 'spec/ruby/core/kernel/singleton_method_spec.rb')
-rw-r--r-- | spec/ruby/core/kernel/singleton_method_spec.rb | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/singleton_method_spec.rb b/spec/ruby/core/kernel/singleton_method_spec.rb new file mode 100644 index 0000000000..77022b40c2 --- /dev/null +++ b/spec/ruby/core/kernel/singleton_method_spec.rb @@ -0,0 +1,41 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Kernel#singleton_method" do + it "find a method defined on the singleton class" do + obj = Object.new + def obj.foo; end + obj.singleton_method(:foo).should be_an_instance_of(Method) + end + + it "returns a Method which can be called" do + obj = Object.new + def obj.foo; 42; end + obj.singleton_method(:foo).call.should == 42 + end + + it "only looks at singleton methods and not at methods in the class" do + klass = Class.new do + def foo + 42 + end + end + obj = klass.new + obj.foo.should == 42 + -> { + obj.singleton_method(:foo) + }.should raise_error(NameError) { |e| + # a NameError and not a NoMethodError + e.class.should == NameError + } + end + + it "raises a NameError if there is no such method" do + obj = Object.new + -> { + obj.singleton_method(:not_existing) + }.should raise_error(NameError) { |e| + # a NameError and not a NoMethodError + e.class.should == NameError + } + end +end |