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Diffstat (limited to 'spec/ruby/core/method/curry_spec.rb')
-rw-r--r-- | spec/ruby/core/method/curry_spec.rb | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/spec/ruby/core/method/curry_spec.rb b/spec/ruby/core/method/curry_spec.rb new file mode 100644 index 0000000000..977f7766d0 --- /dev/null +++ b/spec/ruby/core/method/curry_spec.rb @@ -0,0 +1,36 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Method#curry" do + it "returns a curried proc" do + x = Object.new + def x.foo(a,b,c); [a,b,c]; end + + c = x.method(:foo).curry + c.should be_kind_of(Proc) + c.call(1).call(2, 3).should == [1,2,3] + end + + describe "with optional arity argument" do + before(:each) do + @obj = MethodSpecs::Methods.new + end + + it "returns a curried proc when given correct arity" do + @obj.method(:one_req).curry(1).should be_kind_of(Proc) + @obj.method(:zero_with_splat).curry(100).should be_kind_of(Proc) + @obj.method(:two_req_with_splat).curry(2).should be_kind_of(Proc) + end + + it "raises ArgumentError when the method requires less arguments than the given arity" do + lambda { @obj.method(:zero).curry(1) }.should raise_error(ArgumentError) + lambda { @obj.method(:one_req_one_opt).curry(3) }.should raise_error(ArgumentError) + lambda { @obj.method(:two_req_one_opt_with_block).curry(4) }.should raise_error(ArgumentError) + end + + it "raises ArgumentError when the method requires more arguments than the given arity" do + lambda { @obj.method(:two_req_with_splat).curry(1) }.should raise_error(ArgumentError) + lambda { @obj.method(:one_req).curry(0) }.should raise_error(ArgumentError) + end + end +end |