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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Enumerable#count" do
before :each do
@elements = [1, 2, 4, 2]
@numerous = EnumerableSpecs::Numerous.new(*@elements)
end
describe "when no argument or a block" do
it "returns size" do
@numerous.count.should == 4
end
describe "with a custom size method" do
before :each do
class << @numerous
def size
:any_object
end
end
end
it "ignores the custom size method" do
@numerous.count.should == 4
end
end
end
it "counts nils if given nil as an argument" do
EnumerableSpecs::Numerous.new(nil, nil, nil, false).count(nil).should == 3
end
it "accepts an argument for comparison using ==" do
@numerous.count(2).should == 2
end
it "uses a block for comparison" do
@numerous.count{|x| x%2==0 }.should == 3
end
it "ignores the block when given an argument" do
-> {
@numerous.count(4){|x| x%2==0 }.should == 1
}.should complain(/given block not used/)
end
describe "when each yields multiple values" do
it "gathers initial args as elements" do
multi = EnumerableSpecs::YieldsMulti.new
multi.count {|e| e == 1 }.should == 1
end
it "accepts an argument for comparison using ==" do
multi = EnumerableSpecs::YieldsMulti.new
multi.count([1, 2]).should == 1
end
end
end
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