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require "spec_helper"
require "set"
require "hamster/set"
describe Hamster::Set do
let(:set) { S[*values] }
let(:comparison) { S[*comparison_values] }
describe "#eql?" do
let(:eql?) { set.eql?(comparison) }
shared_examples "comparing non-sets" do
let(:values) { %w[A B C] }
it "returns false" do
expect(eql?).to eq(false)
end
end
context "when comparing to a standard set" do
let(:comparison) { ::Set.new(%w[A B C]) }
include_examples "comparing non-sets"
end
context "when comparing to a arbitrary object" do
let(:comparison) { Object.new }
include_examples "comparing non-sets"
end
context "when comparing with a subclass of Hamster::Set" do
let(:comparison) { Class.new(Hamster::Set).new(%w[A B C]) }
include_examples "comparing non-sets"
end
context "with an empty set for each comparison" do
let(:values) { [] }
let(:comparison_values) { [] }
it "returns true" do
expect(eql?).to eq(true)
end
end
context "with an empty set and a set with nil" do
let(:values) { [] }
let(:comparison_values) { [nil] }
it "returns false" do
expect(eql?).to eq(false)
end
end
context "with a single item array and empty array" do
let(:values) { ["A"] }
let(:comparison_values) { [] }
it "returns false" do
expect(eql?).to eq(false)
end
end
context "with matching single item array" do
let(:values) { ["A"] }
let(:comparison_values) { ["A"] }
it "returns true" do
expect(eql?).to eq(true)
end
end
context "with mismatching single item array" do
let(:values) { ["A"] }
let(:comparison_values) { ["B"] }
it "returns false" do
expect(eql?).to eq(false)
end
end
context "with a multi-item array and single item array" do
let(:values) { %w[A B] }
let(:comparison_values) { ["A"] }
it "returns false" do
expect(eql?).to eq(false)
end
end
context "with matching multi-item array" do
let(:values) { %w[A B] }
let(:comparison_values) { %w[A B] }
it "returns true" do
expect(eql?).to eq(true)
end
end
context "with a mismatching multi-item array" do
let(:values) { %w[A B] }
let(:comparison_values) { %w[B A] }
it "returns true" do
expect(eql?).to eq(true)
end
end
end
end
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