require 'test_helper'
require 'rubycritic/core/analysed_module'
require 'rubycritic/core/smell'

describe Rubycritic::AnalysedModule do
  describe 'attribute readers' do
    before do
      @name = 'Foo'
      @pathname = Pathname.new('foo.rb')
      @smells = []
      @churn = 1
      @complexity = 2
      @analysed_module = Rubycritic::AnalysedModule.new(
        name: @name,
        pathname: @pathname,
        smells: @smells,
        churn: @churn,
        complexity: @complexity
      )
    end

    it 'has a name reader' do
      @analysed_module.name.must_equal @name
    end

    it 'has a pathname reader' do
      @analysed_module.pathname.must_equal @pathname
    end

    it 'has a path reader' do
      @analysed_module.path.must_equal @pathname.to_s
    end

    it 'has a smells reader' do
      @analysed_module.smells.must_equal @smells
    end

    it 'has a churn reader' do
      @analysed_module.churn.must_equal @churn
    end

    it 'has a complexity reader' do
      @analysed_module.complexity.must_equal @complexity
    end
  end

  describe '#cost' do
    it 'returns the remediation cost of fixing the analysed_module' do
      smells = [SmellDouble.new(cost: 1), SmellDouble.new(cost: 2)]
      analysed_module = Rubycritic::AnalysedModule.new(smells: smells, complexity: 0)
      analysed_module.cost.must_equal 3
    end
  end

  describe '#complexity_per_method' do
    context 'when the file has no methods' do
      it 'returns a placeholder' do
        analysed_module = Rubycritic::AnalysedModule.new(complexity: 0, methods_count: 0)
        analysed_module.complexity_per_method.must_equal 'N/A'
      end
    end

    context 'when the file has at least one method' do
      it 'returns the average complexity per method' do
        analysed_module = Rubycritic::AnalysedModule.new(complexity: 10, methods_count: 2)
        analysed_module.complexity_per_method.must_equal 5
      end
    end
  end

  describe '#smells?' do
    it 'returns true if the analysed_module has at least one smell' do
      analysed_module = Rubycritic::AnalysedModule.new(smells: [SmellDouble.new])
      analysed_module.smells?.must_equal true
    end
  end

  describe '#smells_at_location' do
    it 'returns the smells of an analysed_module at a certain location' do
      location = Rubycritic::Location.new('./foo', '42')
      smells = [Rubycritic::Smell.new(locations: [location])]
      analysed_module = Rubycritic::AnalysedModule.new(smells: smells)
      analysed_module.smells_at_location(location).must_equal smells
    end
  end
end

class SmellDouble < OpenStruct; end