diff options
Diffstat (limited to 'spec/rubyspec/core/method/to_proc_spec.rb')
-rw-r--r-- | spec/rubyspec/core/method/to_proc_spec.rb | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/spec/rubyspec/core/method/to_proc_spec.rb b/spec/rubyspec/core/method/to_proc_spec.rb new file mode 100644 index 0000000000..5a754f8597 --- /dev/null +++ b/spec/rubyspec/core/method/to_proc_spec.rb @@ -0,0 +1,89 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Method#to_proc" do + before :each do + ScratchPad.record [] + + @m = MethodSpecs::Methods.new + @meth = @m.method(:foo) + end + + it "returns a Proc object corresponding to the method" do + @meth.to_proc.kind_of?(Proc).should == true + end + + it "returns a Proc which does not depends on the value of self" do + 3.instance_exec(4, &5.method(:+)).should == 9 + end + + + it "returns a Proc object with the correct arity" do + # This may seem redundant but this bug has cropped up in jruby, mri and yarv. + # http://jira.codehaus.org/browse/JRUBY-124 + [ :zero, :one_req, :two_req, + :zero_with_block, :one_req_with_block, :two_req_with_block, + :one_opt, :one_req_one_opt, :one_req_two_opt, :two_req_one_opt, + :one_opt_with_block, :one_req_one_opt_with_block, :one_req_two_opt_with_block, :two_req_one_opt_with_block, + :zero_with_splat, :one_req_with_splat, :two_req_with_splat, + :one_req_one_opt_with_splat, :one_req_two_opt_with_splat, :two_req_one_opt_with_splat, + :zero_with_splat_and_block, :one_req_with_splat_and_block, :two_req_with_splat_and_block, + :one_req_one_opt_with_splat_and_block, :one_req_two_opt_with_splat_and_block, :two_req_one_opt_with_splat_and_block + ].each do |m| + @m.method(m).to_proc.arity.should == @m.method(m).arity + end + end + + it "returns a proc that can be used by define_method" do + x = 'test' + to_s = class << x + define_method :foo, method(:to_s).to_proc + to_s + end + + x.foo.should == to_s + end + + it "returns a proc that can be yielded to" do + x = Object.new + def x.foo(*a); a; end + def x.bar; yield; end + def x.baz(*a); yield(*a); end + + m = x.method :foo + x.bar(&m).should == [] + x.baz(1,2,3,&m).should == [1,2,3] + end + + # #5926 + it "returns a proc that can receive a block" do + x = Object.new + def x.foo; yield 'bar'; end + + m = x.method :foo + result = nil + m.to_proc.call {|val| result = val} + result.should == 'bar' + end + + it "can be called directly and not unwrap arguments like a block" do + obj = MethodSpecs::ToProcBeta.new + obj.to_proc.call([1]).should == [1] + end + + it "should correct handle arguments (unwrap)" do + obj = MethodSpecs::ToProcBeta.new + + array = [[1]] + array.each(&obj) + ScratchPad.recorded.should == [[1]] + end + + it "executes method with whole array (one argument)" do + obj = MethodSpecs::ToProcBeta.new + + array = [[1, 2]] + array.each(&obj) + ScratchPad.recorded.should == [[1, 2]] + end +end |