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if RUBY_VERSION >= "1.9"
require 'rspec'
def call_one
yield(["a"])
end
def call_two
yield(["a","b"])
end
def call_three
yield(["a", "b", "c"])
end
def yield_with_splat(method_name = 'call_two')
send(method_name) { |*a| yield(*a) }
end
describe 'yield splat' do
it 'yields an array when block has only one argument' do
value = nil
yield_with_splat("call_one") { |a| value = a }
value.should == ["a"]
end
it 'yields an array when block as one argument and passed two' do
value = nil
yield_with_splat("call_two") { |a| value = a }
value.should == ["a", "b"]
end
it 'yields one value when block has two arguments and passed one' do
first_value = nil
second_value = nil
yield_with_splat("call_one") { |a,b| first_value = a; second_value = b }
first_value.should == "a"
second_value.should == nil
end
it 'yields two values when block has two arguments and passed two' do
first_value = nil
second_value = nil
yield_with_splat { |a,b| first_value = a; second_value = b }
first_value.should == "a"
second_value.should == "b"
end
it 'yields two values when block has two arguments and passed three' do
first_value = nil
second_value = nil
yield_with_splat("call_three") { |a,b| first_value = a; second_value = b }
first_value.should == "a"
second_value.should == "b"
end
end
end
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