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Versions: 10
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Contents
require File.expand_path('../../../spec_helper', __FILE__)
require 'hamster/set'
describe Hamster::Set do
describe "#one?" do
describe "when empty" do
before do
@set = Hamster.set
end
it "with a block returns false" do
@set.one? {}.should == false
end
it "with no block returns false" do
@set.one?.should == false
end
end
describe "when not empty" do
describe "with a block" do
before do
@set = Hamster.set("A", "B", "C")
end
it "returns false if the block returns true more than once" do
@set.one? { |item| true }.should == false
end
it "returns false if the block never returns true" do
@set.one? { |item| false }.should == false
end
it "returns true if the block only returns true once" do
@set.one? { |item| item == "A" }.should == true
end
end
describe "with no block" do
it "returns false if more than one value is truthy" do
Hamster.set(nil, true, "A").one?.should == false
end
it "returns true if only one value is truthy" do
Hamster.set(nil, true, false).one?.should == true
end
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems