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require "spec_helper"
require "hamster/experimental/mutable_set"
describe Hamster::MutableSet do
let(:mutable) { Hamster::MutableSet[*values] }
describe "#delete?" do
let(:values) { %w[A B C] }
let(:delete?) { mutable.delete?(value) }
context "with an existing value" do
let(:value) { "B" }
it "returns true" do
expect(delete?).to be(true)
end
it "modifies the set to remove the value" do
delete?
expect(mutable).to eq(Hamster::MutableSet["A", "C"])
end
end
context "with a non-existing value" do
let(:value) { "D" }
it "returns false" do
expect(delete?).to be(false)
end
it "preserves the original values" do
delete?
expect(mutable).to eq(Hamster::MutableSet["A", "B", "C"])
end
end
end
end
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