4 files changed, 258 insertions, 0 deletions
diff --git a/spec/ruby/core/method/shared/call.rb b/spec/ruby/core/method/shared/call.rb
new file mode 100644
index 0000000000..f26e373695
--- /dev/null
+++ b/spec/ruby/core/method/shared/call.rb
@@ -0,0 +1,51 @@
+describe :method_call, shared: true do
+  it "invokes the method with the specified arguments, returning the method's return value" do
+    m = 12.method("+")
+    m.send(@method, 3).should == 15
+    m.send(@method, 20).should == 32
+
+    m = MethodSpecs::Methods.new.method(:attr=)
+    m.send(@method, 42).should == 42
+  end
+
+  it "raises an ArgumentError when given incorrect number of arguments" do
+    -> {
+      MethodSpecs::Methods.new.method(:two_req).send(@method, 1, 2, 3)
+    }.should raise_error(ArgumentError)
+    -> {
+      MethodSpecs::Methods.new.method(:two_req).send(@method, 1)
+    }.should raise_error(ArgumentError)
+  end
+
+  describe "for a Method generated by respond_to_missing?" do
+    it "invokes method_missing with the specified arguments and returns the result" do
+      @m = MethodSpecs::Methods.new
+      meth = @m.method(:handled_via_method_missing)
+      meth.send(@method, :argument).should == [:argument]
+    end
+
+    it "invokes method_missing with the method name and the specified arguments" do
+      @m = MethodSpecs::Methods.new
+      meth = @m.method(:handled_via_method_missing)
+
+      @m.should_receive(:method_missing).with(:handled_via_method_missing, :argument)
+      meth.send(@method, :argument)
+    end
+
+    it "invokes method_missing dynamically" do
+      @m = MethodSpecs::Methods.new
+      meth = @m.method(:handled_via_method_missing)
+
+      def @m.method_missing(*); :changed; end
+      meth.send(@method, :argument).should == :changed
+    end
+
+    it "does not call the original method name even if it now exists" do
+      @m = MethodSpecs::Methods.new
+      meth = @m.method(:handled_via_method_missing)
+
+      def @m.handled_via_method_missing(*); :not_called; end
+      meth.send(@method, :argument).should == [:argument]
+    end
+  end
+end
diff --git a/spec/ruby/core/method/shared/dup.rb b/spec/ruby/core/method/shared/dup.rb
new file mode 100644
index 0000000000..c74847083f
--- /dev/null
+++ b/spec/ruby/core/method/shared/dup.rb
@@ -0,0 +1,32 @@
+describe :method_dup, shared: true do
+  it "returns a copy of self" do
+    a = Object.new.method(:method)
+    b = a.send(@method)
+
+    a.should == b
+    a.should_not equal(b)
+  end
+
+  ruby_version_is "3.4" do
+    it "copies instance variables" do
+      method = Object.new.method(:method)
+      method.instance_variable_set(:@ivar, 1)
+      cl = method.send(@method)
+      cl.instance_variables.should == [:@ivar]
+    end
+
+    it "copies the finalizer" do
+      code = <<-'RUBY'
+        obj = Object.new.method(:method)
+
+        ObjectSpace.define_finalizer(obj, Proc.new { STDOUT.write "finalized\n" })
+
+        obj.clone
+
+        exit 0
+      RUBY
+
+      ruby_exe(code).lines.sort.should == ["finalized\n", "finalized\n"]
+    end
+  end
+end
diff --git a/spec/ruby/core/method/shared/eql.rb b/spec/ruby/core/method/shared/eql.rb
new file mode 100644
index 0000000000..5c720cbac1
--- /dev/null
+++ b/spec/ruby/core/method/shared/eql.rb
@@ -0,0 +1,94 @@
+require_relative '../../../spec_helper'
+require_relative '../fixtures/classes'
+
+describe :method_equal, shared: true do
+  before :each do
+    @m = MethodSpecs::Methods.new
+    @m_foo = @m.method(:foo)
+    @m2 = MethodSpecs::Methods.new
+    @a = MethodSpecs::A.new
+  end
+
+  it "returns true if methods are the same" do
+    m2 = @m.method(:foo)
+
+    @m_foo.send(@method, @m_foo).should be_true
+    @m_foo.send(@method, m2).should be_true
+  end
+
+  it "returns true on aliased methods" do
+    m_bar = @m.method(:bar)
+
+    m_bar.send(@method, @m_foo).should be_true
+  end
+
+  it "returns true if the two core methods are aliases" do
+    s = "hello"
+    a = s.method(:size)
+    b = s.method(:length)
+    a.send(@method, b).should be_true
+  end
+
+  it "returns false on a method which is neither aliased nor the same method" do
+    m2 = @m.method(:zero)
+
+    @m_foo.send(@method, m2).should be_false
+  end
+
+  it "returns false for a method which is not bound to the same object" do
+    m2_foo = @m2.method(:foo)
+    a_baz = @a.method(:baz)
+
+    @m_foo.send(@method, m2_foo).should be_false
+    @m_foo.send(@method, a_baz).should be_false
+  end
+
+  it "returns false if the two methods are bound to the same object but were defined independently" do
+    m2 = @m.method(:same_as_foo)
+    @m_foo.send(@method, m2).should be_false
+  end
+
+  it "returns true if a method was defined using the other one" do
+    MethodSpecs::Methods.send :define_method, :defined_foo, MethodSpecs::Methods.instance_method(:foo)
+    m2 = @m.method(:defined_foo)
+    @m_foo.send(@method, m2).should be_true
+  end
+
+  it "returns false if comparing a method defined via define_method and def" do
+    defn = @m.method(:zero)
+    defined = @m.method(:zero_defined_method)
+
+    defn.send(@method, defined).should be_false
+    defined.send(@method, defn).should be_false
+  end
+
+  describe 'missing methods' do
+    it "returns true for the same method missing" do
+      miss1 = @m.method(:handled_via_method_missing)
+      miss1bis = @m.method(:handled_via_method_missing)
+      miss2 = @m.method(:also_handled)
+
+      miss1.send(@method, miss1bis).should be_true
+      miss1.send(@method, miss2).should be_false
+    end
+
+    it 'calls respond_to_missing? with true to include private methods' do
+      @m.should_receive(:respond_to_missing?).with(:some_missing_method, true).and_return(true)
+      @m.method(:some_missing_method)
+    end
+  end
+
+  it "returns false if the two methods are bound to different objects, have the same names, and identical bodies" do
+    a = MethodSpecs::Eql.instance_method(:same_body)
+    b = MethodSpecs::Eql2.instance_method(:same_body)
+    a.send(@method, b).should be_false
+  end
+
+  it "returns false if the argument is not a Method object" do
+    String.instance_method(:size).send(@method, 7).should be_false
+  end
+
+  it "returns false if the argument is an unbound version of self" do
+    method(:load).send(@method, method(:load).unbind).should be_false
+  end
+end
diff --git a/spec/ruby/core/method/shared/to_s.rb b/spec/ruby/core/method/shared/to_s.rb
new file mode 100644
index 0000000000..b2d27d370f
--- /dev/null
+++ b/spec/ruby/core/method/shared/to_s.rb
@@ -0,0 +1,81 @@
+require_relative '../../../spec_helper'
+require_relative '../fixtures/classes'
+
+describe :method_to_s, shared: true do
+  before :each do
+    @m = MethodSpecs::MySub.new.method :bar
+    @string = @m.send(@method)
+  end
+
+  it "returns a String" do
+    @m.send(@method).should be_kind_of(String)
+  end
+
+  it "returns a String for methods defined with attr_accessor" do
+    m = MethodSpecs::Methods.new.method :attr
+    m.send(@method).should be_kind_of(String)
+  end
+
+  it "returns a String containing 'Method'" do
+    @string.should =~ /\bMethod\b/
+  end
+
+  it "returns a String containing the method name" do
+    @string.should =~ /\#bar/
+  end
+
+  it "returns a String containing method arguments" do
+    obj = MethodSpecs::Methods.new
+    obj.method(:zero).send(@method).should.include?("()")
+    obj.method(:one_req).send(@method).should.include?("(a)")
+    obj.method(:one_req_named).send(@method).should.include?("(a:)")
+    obj.method(:zero_with_block).send(@method).should.include?("(&blk)")
+    obj.method(:one_opt).send(@method).should.include?("(a=...)")
+    obj.method(:one_opt_named).send(@method).should.include?("(a: ...)")
+    obj.method(:zero_with_splat).send(@method).should.include?("(*a)")
+    obj.method(:zero_with_double_splat).send(@method).should.include?("(**a)")
+    obj.method(:one_req_one_opt_with_splat_and_block).send(@method).should.include?("(a, b=..., *c, &blk)")
+  end
+
+  it "returns a String containing the Module the method is defined in" do
+    @string.should =~ /MethodSpecs::MyMod/
+  end
+
+  it "returns a String containing the Module the method is referenced from" do
+    @string.should =~ /MethodSpecs::MySub/
+  end
+
+  it "returns a String including all details" do
+    @string.should.start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar"
+  end
+
+  it "does not show the defining module if it is the same as the receiver class" do
+    MethodSpecs::A.new.method(:baz).send(@method).should.start_with? "#<Method: MethodSpecs::A#baz"
+  end
+
+  it "returns a String containing the Module containing the method if object has a singleton class but method is not defined in the singleton class" do
+    obj = MethodSpecs::MySub.new
+    obj.singleton_class
+    @m = obj.method(:bar)
+    @string = @m.send(@method)
+    @string.should.start_with? "#<Method: MethodSpecs::MySub(MethodSpecs::MyMod)#bar"
+
+    c = MethodSpecs::MySub.dup
+    m = Module.new{def bar; end}
+    c.extend(m)
+    @string = c.method(:bar).send(@method)
+    @string.should.start_with? "#<Method: #<Class:#{c.inspect}>(#{m.inspect})#bar"
+  end
+
+  it "returns a String containing the singleton class if method is defined in the singleton class" do
+    obj = MethodSpecs::MySub.new
+    def obj.bar; end
+    @m = obj.method(:bar)
+    @string = @m.send(@method).sub(/0x\h+/, '0xXXXXXX')
+    @string.should.start_with? "#<Method: #<MethodSpecs::MySub:0xXXXXXX>.bar"
+  end
+
+  it "shows the metaclass and the owner for a Module instance method retrieved from a class" do
+    String.method(:include).inspect.should.start_with?("#<Method: #<Class:String>(Module)#include")
+  end
+end