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Diffstat (limited to 'spec/ruby/core/module/instance_method_spec.rb')
-rw-r--r-- | spec/ruby/core/module/instance_method_spec.rb | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/spec/ruby/core/module/instance_method_spec.rb b/spec/ruby/core/module/instance_method_spec.rb new file mode 100644 index 0000000000..82e397b4bc --- /dev/null +++ b/spec/ruby/core/module/instance_method_spec.rb @@ -0,0 +1,85 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Module#instance_method" do + before :all do + @parent_um = ModuleSpecs::InstanceMeth.instance_method(:foo) + @child_um = ModuleSpecs::InstanceMethChild.instance_method(:foo) + @mod_um = ModuleSpecs::InstanceMethChild.instance_method(:bar) + end + + it "is a public method" do + Module.should have_public_instance_method(:instance_method, false) + end + + it "requires an argument" do + Module.new.method(:instance_method).arity.should == 1 + end + + it "returns an UnboundMethod corresponding to the given name" do + @parent_um.should be_kind_of(UnboundMethod) + @parent_um.bind(ModuleSpecs::InstanceMeth.new).call.should == :foo + end + + it "returns an UnboundMethod corresponding to the given name from a superclass" do + @child_um.should be_kind_of(UnboundMethod) + @child_um.bind(ModuleSpecs::InstanceMethChild.new).call.should == :foo + end + + it "returns an UnboundMethod corresponding to the given name from an included Module" do + @mod_um.should be_kind_of(UnboundMethod) + @mod_um.bind(ModuleSpecs::InstanceMethChild.new).call.should == :bar + end + + it "returns an UnboundMethod when given a protected method name" do + ModuleSpecs::Basic.instance_method(:protected_module).should be_an_instance_of(UnboundMethod) + end + + it "returns an UnboundMethod when given a private method name" do + ModuleSpecs::Basic.instance_method(:private_module).should be_an_instance_of(UnboundMethod) + end + + it "gives UnboundMethod method name, Module defined in and Module extracted from" do + @parent_um.inspect.should =~ /\bfoo\b/ + @parent_um.inspect.should =~ /\bModuleSpecs::InstanceMeth\b/ + @parent_um.inspect.should =~ /\bModuleSpecs::InstanceMeth\b/ + @child_um.inspect.should =~ /\bfoo\b/ + @child_um.inspect.should =~ /\bModuleSpecs::InstanceMeth\b/ + @child_um.inspect.should =~ /\bModuleSpecs::InstanceMethChild\b/ + @mod_um.inspect.should =~ /\bbar\b/ + @mod_um.inspect.should =~ /\bModuleSpecs::InstanceMethMod\b/ + @mod_um.inspect.should =~ /\bModuleSpecs::InstanceMethChild\b/ + end + + it "raises a TypeError if not passed a symbol" do + lambda { Object.instance_method([]) }.should raise_error(TypeError) + lambda { Object.instance_method(0) }.should raise_error(TypeError) + end + + it "raises a TypeError if the given name is not a string/symbol" do + lambda { Object.instance_method(nil) }.should raise_error(TypeError) + lambda { Object.instance_method(mock('x')) }.should raise_error(TypeError) + end + + it "raises a NameError if the method has been undefined" do + child = Class.new(ModuleSpecs::InstanceMeth) + child.send :undef_method, :foo + um = ModuleSpecs::InstanceMeth.instance_method(:foo) + um.should == @parent_um + lambda do + child.instance_method(:foo) + end.should raise_error(NameError) + end + + it "raises a NameError if the method does not exist" do + lambda { Object.instance_method(:missing) }.should raise_error(NameError) + end + + it "sets the NameError#name attribute to the name of the missing method" do + begin + Object.instance_method(:missing) + rescue NameError => e + e.name.should == :missing + end + end +end |