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require_relative '../../spec_helper'
describe "Enumerator#size" do
it "returns same value if set size is an Integer" do
Enumerator.new(100) {}.size.should == 100
end
it "returns nil if set size is nil" do
Enumerator.new(nil) {}.size.should be_nil
end
it "returns returning value from size.call if set size is a Proc" do
base_size = 100
enum = Enumerator.new(-> { base_size + 1 }) {}
base_size = 200
enum.size.should == 201
base_size = 300
enum.size.should == 301
end
it "returns the result from size.call if the size respond to call" do
obj = mock('call')
obj.should_receive(:call).and_return(42)
Enumerator.new(obj) {}.size.should == 42
end
end
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