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require File.expand_path('../../../../spec_helper', __FILE__)
require File.expand_path('../../fixtures/classes', __FILE__)
require File.expand_path('../../fixtures/classes_1.9', __FILE__)
ruby_version_is "1.9" do
describe "Method#parameters" do
it "returns an empty Array when the method expects no arguments" do
MethodSpecs::Methods.instance_method(:zero).parameters.should == []
end
it "returns [[:req,:name]] for a method expecting one required argument called 'name'" do
MethodSpecs::Methods.instance_method(:one_req).parameters.should == [[:req,:a]]
end
it "returns [[:req,:a],[:req,:b]] for a method expecting two required arguments called 'a' and 'b''" do
m = MethodSpecs::Methods.instance_method(:two_req)
m.parameters.should == [[:req,:a], [:req,:b]]
end
it "returns [[:block,:blk]] for a method expecting one block argument called 'a'" do
m = MethodSpecs::Methods.instance_method(:zero_with_block)
m.parameters.should == [[:block,:blk]]
end
it "returns [[:req,:a],[:block,:b] for a method expecting a required argument ('a') and a block argument ('b')" do
m = MethodSpecs::Methods.instance_method(:one_req_with_block)
m.parameters.should == [[:req,:a], [:block,:blk]]
end
it "returns [[:req,:a],[:req,:b],[:block,:c] for a method expecting two required arguments ('a','b') and a block argument ('c')" do
m = MethodSpecs::Methods.instance_method(:two_req_with_block)
m.parameters.should == [[:req,:a], [:req,:b], [:block,:blk]]
end
it "returns [[:opt,:a]] for a method expecting one optional argument ('a')" do
m = MethodSpecs::Methods.instance_method(:one_opt)
m.parameters.should == [[:opt,:a]]
end
it "returns [[:req,:a],[:opt,:b]] for a method expecting one required argument ('a') and one optional argument ('b')" do
m = MethodSpecs::Methods.instance_method(:one_req_one_opt)
m.parameters.should == [[:req,:a],[:opt,:b]]
end
it "returns [[:req,:a],[:opt,:b]] for a method expecting one required argument ('a') and one optional argument ('b')" do
m = MethodSpecs::Methods.instance_method(:one_req_one_opt)
m.parameters.should == [[:req,:a],[:opt,:b]]
end
it "returns [[:req,:a],[:opt,:b],[:opt,:c]] for a method expecting one required argument ('a') and two optional arguments ('b','c')" do
m = MethodSpecs::Methods.instance_method(:one_req_two_opt)
m.parameters.should == [[:req,:a],[:opt,:b],[:opt,:c]]
end
it "returns [[:req,:a],[:req,:b],[:opt,:c]] for a method expecting two required arguments ('a','b') and one optional arguments ('c')" do
m = MethodSpecs::Methods.instance_method(:two_req_one_opt)
m.parameters.should == [[:req,:a],[:req,:b],[:opt,:c]]
end
it "returns [[:opt,:a],[:block,:b]] for a method expecting one required argument ('a') and one block argument ('b')" do
m = MethodSpecs::Methods.instance_method(:one_opt_with_block)
m.parameters.should == [[:opt,:a],[:block,:blk]]
end
it "returns [[:req,:a],[:opt,:b],[:block,:c]] for a method expecting one required argument ('a'), one optional argument ('b'), and a block ('c')" do
m = MethodSpecs::Methods.instance_method(:one_req_one_opt_with_block)
m.parameters.should == [[:req,:a],[:opt,:b],[:block,:blk]]
end
it "returns [[:req,:a],[:opt,:b],[:opt,:c],[:block,:d]] for a method expecting one required argument ('a'), two optional arguments ('b','c'), and a block ('d')" do
m = MethodSpecs::Methods.instance_method(:one_req_two_opt_with_block)
m.parameters.should == [[:req,:a],[:opt,:b],[:opt,:c],[:block,:blk]]
end
it "returns [[:rest,:a]] for a method expecting a single splat argument ('a')" do
m = MethodSpecs::Methods.instance_method(:zero_with_splat)
m.parameters.should == [[:rest,:a]]
end
it "returns [[:req,:a],[:rest,:b]] for a method expecting a splat argument ('a') and a required argument ('b')" do
m = MethodSpecs::Methods.instance_method(:one_req_with_splat)
m.parameters.should == [[:req,:a],[:rest,:b]]
end
it "returns [[:req,:a],[:req,:b],[:rest,:c]] for a method expecting two required arguments ('a','b') and a splat argument ('c')" do
m = MethodSpecs::Methods.instance_method(:two_req_with_splat)
m.parameters.should == [[:req,:a],[:req,:b],[:rest,:c]]
end
it "returns [[:req,:a],[:opt,:b],[:rest,:c]] for a method expecting a required argument ('a','b'), an optional argument ('b'), and a splat argument ('c')" do
m = MethodSpecs::Methods.instance_method(:one_req_one_opt_with_splat)
m.parameters.should == [[:req,:a],[:opt,:b],[:rest,:c]]
end
it "returns [[:req,:a],[:req,:b],[:opt,:b],[:rest,:d]] for a method expecting two required arguments ('a','b'), an optional argument ('c'), and a splat argument ('d')" do
m = MethodSpecs::Methods.instance_method(:two_req_one_opt_with_splat)
m.parameters.should == [[:req,:a],[:req,:b],[:opt,:c],[:rest,:d]]
end
it "returns [[:req,:a],[:opt,:b],[:opt,:c],[:rest,:d]] for a method expecting a required argument ('a'), two optional arguments ('b','c'), and a splat argument ('d')" do
m = MethodSpecs::Methods.instance_method(:one_req_two_opt_with_splat)
m.parameters.should == [[:req,:a],[:opt,:b],[:opt,:c],[:rest,:d]]
end
it "returns [[:rest,:a],[:block,:b]] for a method expecting a splat argument ('a') and a block argument ('b')" do
m = MethodSpecs::Methods.instance_method(:zero_with_splat_and_block)
m.parameters.should == [[:rest,:a],[:block,:blk]]
end
it "returns [[:req,:a],[:rest,:b],[:block,:c]] for a method expecting a required argument ('a'), a splat argument ('b'), and a block ('c')" do
m = MethodSpecs::Methods.instance_method(:one_req_with_splat_and_block)
m.parameters.should == [[:req,:a],[:rest,:b],[:block,:blk]]
end
it "returns [[:req,:a],[:req,:b],[:rest,:c],[:block,:d]] for a method expecting two required arguments ('a','b'), a splat argument ('c'), and a block ('d')" do
m = MethodSpecs::Methods.instance_method(:two_req_with_splat_and_block)
m.parameters.should == [[:req,:a],[:req,:b],[:rest,:c],[:block,:blk]]
end
it "returns [[:req,:a],[:opt,:b],[:rest,:c],[:block,:d]] for a method expecting a required argument ('a'), a splat argument ('c'), and a block ('d')" do
m = MethodSpecs::Methods.instance_method(:one_req_one_opt_with_splat_and_block)
m.parameters.should == [[:req,:a],[:opt,:b],[:rest,:c],[:block,:blk]]
end
it "returns [[:req,:a],[:req,:b],[:opt,:c],[:block,:d]] for a method expecting two required arguments ('a','b'), an optional argument ('c'), a splat argument ('d'), and a block ('e')" do
m = MethodSpecs::Methods.instance_method(:two_req_one_opt_with_splat_and_block)
m.parameters.should == [[:req,:a],[:req,:b],[:opt,:c],[:rest,:d],[:block,:blk]]
end
# 1.9 semantics
#
it "returns [[:rest,:a],[:req,:b]] for a method expecting a splat argument ('a') and a required argument ('b')" do
m = MethodSpecs::Methods.instance_method(:one_splat_one_req)
m.parameters.should == [[:rest,:a],[:req,:b]]
end
it "returns [[:rest,:a],[:req,:b],[:req,:c]] for a method expecting a splat argument ('a') and two required arguments ('b','c')" do
m = MethodSpecs::Methods.instance_method(:one_splat_two_req)
m.parameters.should == [[:rest,:a],[:req,:b],[:req,:c]]
end
it "returns [[:rest,:a],[:req,:b],[:block,:c]] for a method expecting a splat argument ('a'), a required argument ('b'), and a block ('c')" do
m = MethodSpecs::Methods.instance_method(:one_splat_one_req_with_block)
m.parameters.should == [[:rest,:a],[:req,:b],[:block,:blk]]
end
it "works with ->(){} as the value of an optional argument" do
m = MethodSpecs::Methods.instance_method(:one_opt_with_stabby)
m.parameters.should == [[:opt,:a]]
end
# define_method variants
it "returns [] for a define_method method with explicit no-args || specification" do
m = MethodSpecs::Methods.instance_method(:zero_defined_method)
m.parameters.should == []
end
it "returns [[:rest, :x]] for a define_method method with rest arg 'x' only" do
m = MethodSpecs::Methods.instance_method(:zero_with_splat_defined_method)
m.parameters.should == [[:rest, :x]]
end
it "returns [[:req, :x]] for a define_method method expecting one required argument 'x'" do
m = MethodSpecs::Methods.instance_method(:one_req_defined_method)
m.parameters.should == [[:req, :x]]
end
it "returns [[:req, :x], [:req, :y]] for a define_method method expecting two required arguments 'x' and 'y'" do
m = MethodSpecs::Methods.instance_method(:two_req_defined_method)
m.parameters.should == [[:req, :x], [:req, :y]]
end
it "returns [] for a define_method method with no args specification" do
m = MethodSpecs::Methods.instance_method(:no_args_defined_method)
m.parameters.should == []
end
it "returns [[:req]] for a define_method method with a grouping as its only argument" do
m = MethodSpecs::Methods.instance_method(:two_grouped_defined_method)
m.parameters.should == [[:req]]
end
it "returns [[:opt, :x]] for a define_method method with an optional argument 'x'" do
m = MethodSpecs::Methods.instance_method(:one_optional_defined_method)
m.parameters.should == [[:opt, :x]]
end
it "it returns [[:rest]] for a Method generated by respond_to_missing?" do
m = MethodSpecs::Methods.new
m.method(:handled_via_method_missing).parameters.should == [[:rest]]
end
end
end
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