# frozen_string_literal: true

require 'spec_helper'

describe Sinclair::MethodDefinition::ParameterHelper do
  describe '.parameters_from' do
    context 'when parameters are not named' do
      context 'when there are no defaults' do
        it 'returns a list of parameters' do
          expect(described_class.parameters_from(%i[a b]))
            .to eq(%w[a b])
        end
      end

      context 'when there are defaults' do
        let(:parameters) do
          [{ a: 10, b: 'word', c: true, d: false, e: nil, f: :symbol }]
        end

        it 'returns a list of parameters' do
          expect(described_class.parameters_from(parameters))
            .to eq(['a = 10', 'b = "word"', 'c = true', 'd = false', 'e = nil', 'f = :symbol'])
        end
      end

      context 'when the parameter is an undefined parameter' do
        let(:parameters) do
          [:a, :b, '*args', { c: 10, d: 'word' }]
        end

        it 'returns a list of parameters' do
          expect(described_class.parameters_from(parameters))
            .to eq(['a', 'b', 'c = 10', 'd = "word"', '*args'])
        end
      end
    end

    context 'when parameters are named' do
      context 'when there are no defaults' do
        it 'returns a list of parameters' do
          expect(described_class.parameters_from(%i[a b], named: true))
            .to eq(%w[a: b:])
        end
      end

      context 'when there are defaults' do
        let(:parameters) do
          [{ a: 10, b: 'word', c: true, d: false, e: nil, f: :symbol }]
        end

        it 'returns a list of parameters' do
          expect(described_class.parameters_from(parameters, named: true))
            .to eq(['a: 10', 'b: "word"', 'c: true', 'd: false', 'e: nil', 'f: :symbol'])
        end
      end

      context 'when the parameter is an undefined parameter' do
        let(:parameters) do
          [:a, :b, '**opts', { c: 10, d: 'word' }]
        end

        it 'returns a list of parameters' do
          expect(described_class.parameters_from(parameters, named: true))
            .to eq(['a:', 'b:', 'c: 10', 'd: "word"', '**opts'])
        end
      end
    end
  end
end