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Contents

# frozen_string_literal: true

RSpec.describe Fear::TryPatternMatch do
  context "Success" do
    let(:matcher) do
      described_class.new do |m|
        m.success(:even?.to_proc) { |x| "#{x} is even" }
        m.success(:odd?.to_proc) { |x| "#{x} is odd" }
      end
    end

    it do
      expect(matcher.(Fear.success(4))).to eq("4 is even")
      expect(matcher.(Fear.success(3))).to eq("3 is odd")
      expect do
        matcher.(Fear.failure(RuntimeError.new))
      end.to raise_error(Fear::MatchError)
    end
  end

  context "Failure" do
    let(:matcher) do
      described_class.new do |m|
        m.failure(RuntimeError) { |x| "#{x} is first" }
        m.failure(StandardError) { |x| "#{x} is second" }
      end
    end

    it do
      expect(matcher.(Fear.failure(RuntimeError.new))).to eq("RuntimeError is first")
      expect(matcher.(Fear.failure(StandardError.new))).to eq("StandardError is second")
      expect do
        matcher.(Fear.success(44))
      end.to raise_error(Fear::MatchError)
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version Path
fear-2.0.1 spec/fear/try_pattern_match_spec.rb
fear-2.0.0 spec/fear/try_pattern_match_spec.rb
fear-1.2.0 spec/fear/try_pattern_match_spec.rb
fear-1.1.0 spec/fear/try_pattern_match_spec.rb