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Contents
require "spec_helper"
require "hamster/set"
describe Hamster::Set do
[:reject, :delete_if].each do |method|
describe "##{method}" do
let(:set) { S["A", "B", "C"] }
context "when nothing matches" do
it "returns self" do
set.send(method) { |item| false }.should equal(set)
end
end
context "when only some things match" do
context "with a block" do
let(:result) { set.send(method) { |item| item == "A" }}
it "preserves the original" do
result
set.should eql(S["A", "B", "C"])
end
it "returns a set with the matching values" do
result.should eql(S["B", "C"])
end
end
context "with no block" do
it "returns self" do
set.send(method).class.should be(Enumerator)
set.send(method).each { |item| item == "A" }.should == S["B", "C"]
end
end
end
context "on a large set, with many combinations of input" do
it "still works" do
array = (1..1000).to_a
set = S.new(array)
[0, 10, 100, 200, 500, 800, 900, 999, 1000].each do |threshold|
result = set.send(method) { |item| item > threshold }
result.size.should == threshold
1.upto(threshold) { |n| result.include?(n).should == true }
(threshold+1).upto(1000) { |n| result.include?(n).should == false }
end
end
end
end
end
end
Version data entries
3 entries across 3 versions & 2 rubygems