# encoding: utf-8
# author: Dominik Richter
# author: Christoph Hartmann

require 'helper'
require 'inspec/profile_context'

class Module
  include Minitest::Spec::DSL
end

module DescribeOneTest
  it 'loads an empty describe.one' do
    profile.load(format(context_format, 'describe.one'))
    get_checks.must_equal([])
  end

  it 'loads an empty describe.one block' do
    profile.load(format(context_format, 'describe.one do; end'))
    get_checks.must_equal([['describe.one', [], nil]])
  end

  it 'loads a simple describe.one block' do
    profile.load(format(context_format, '
      describe.one do
        describe true do; it { should eq true }; end
      end'))
    c = get_checks[0]
    c[0].must_equal 'describe.one'
    childs = c[1]
    childs.length.must_equal 1
    childs[0][0].must_equal 'describe'
    childs[0][1].must_equal [true]
  end

  it 'loads a complex describe.one block' do
    profile.load(format(context_format, '
      describe.one do
        describe 0 do; it { should eq true }; end
        describe 1 do; it { should eq true }; end
        describe 2 do; it { should eq true }; end
      end'))
    c = get_checks[0]
    c[0].must_equal 'describe.one'
    childs = c[1]
    childs.length.must_equal 3
    childs.each_with_index do |ci, idx|
      ci[0].must_equal 'describe'
      ci[1].must_equal [idx]
    end
  end
end

describe Inspec::ProfileContext do
  let(:backend) { MockLoader.new.backend }
  let(:profile) { Inspec::ProfileContext.new(nil, backend, {}) }

  def get_rule
    profile.rules.values[0]
  end

  def get_checks
    get_rule.instance_variable_get(:@checks)
  end

  it 'must be able to load empty content' do
    profile.load('', 'dummy', 1).must_be_nil
  end

  describe 'its default DSL' do
    def load(call)
      proc { profile.load(call) }
    end

    let(:context_format) { '%s' }

    include DescribeOneTest

    it 'must provide os resource' do
      load('print os[:family]').must_output 'ubuntu'
    end

    it 'must provide file resource' do
      load('print file("").type').must_output 'unknown'
    end

    it 'must provide command resource' do
      load('print command("").stdout').must_output ''
    end

    it 'supports empty describe calls' do
      load('describe').must_output ''
      profile.rules.keys.length.must_equal 1
      profile.rules.keys[0].must_match /^\(generated from \(eval\):1 [0-9a-f]+\)$/
      profile.rules.values[0].must_be_kind_of Inspec::Rule
    end

    it 'provides the describe keyword in the global DSL' do
      load('describe true do; it { should_eq true }; end')
        .must_output ''
      profile.rules.keys.length.must_equal 1
      profile.rules.keys[0].must_match /^\(generated from \(eval\):1 [0-9a-f]+\)$/
      profile.rules.values[0].must_be_kind_of Inspec::Rule
    end

    it 'loads multiple computed calls to describe correctly' do
      load("%w{1 2 3}.each do\ndescribe true do; it { should_eq true }; end\nend")
        .must_output ''
      profile.rules.keys.length.must_equal 3
      [0, 1, 2].each do |i|
        profile.rules.keys[i].must_match /^\(generated from \(eval\):2 [0-9a-f]+\)$/
        profile.rules.values[i].must_be_kind_of Inspec::Rule
      end
    end

    it 'does not provide the expect keyword in the global DLS' do
      load('expect(true).to_eq true').must_raise NoMethodError
    end

    it 'provides the rule keyword in the global DSL' do
      profile.load('rule 1')
      profile.rules.keys.must_equal [1]
      profile.rules.values[0].must_be_kind_of Inspec::Rule
    end
  end

  describe 'rule DSL' do
    let(:rule_id) { rand.to_s }
    let(:context_format) { "rule #{rule_id.inspect} do\n%s\nend" }

    def get_rule
      profile.rules[rule_id]
    end

    include DescribeOneTest

    it 'doesnt add any checks if none are provided' do
      profile.load("rule #{rule_id.inspect}")
      rule = profile.rules[rule_id]
      rule.instance_variable_get(:@checks).must_equal([])
    end

    describe 'supports empty describe blocks' do
      it 'doesnt crash, but doesnt add anything either' do
        profile.load(format(context_format, 'describe'))
        profile.rules.keys.must_include(rule_id)
        get_checks.must_equal([])
      end
    end

    describe 'adds a check via describe' do
      let(:check) {
        profile.load(format(context_format,
          "describe os[:family] { it { must_equal 'ubuntu' } }"
          ))
        get_checks[0]
      }

      it 'registers the check with describe' do
        check[0].must_equal 'describe'
      end

      it 'registers the check with the describe argument' do
        check[1].must_equal %w{ubuntu}
      end

      it 'registers the check with the provided proc' do
        check[2].must_be_kind_of Proc
      end
    end

    describe 'adds a check via expect' do
      let(:check) {
        profile.load(format(context_format,
          "expect(os[:family]).to eq('ubuntu')"
          ))
        get_checks[0]
      }

      it 'registers the check with describe' do
        check[0].must_equal 'expect'
      end

      it 'registers the check with the describe argument' do
        check[1].must_equal %w{ubuntu}
      end

      it 'registers the check with the provided proc' do
        check[2].must_be_kind_of Inspec::Expect
      end
    end

    describe 'adds a check via describe + expect' do
      let(:check) {
        profile.load(format(context_format,
          "describe 'the actual test' do
            expect(os[:family]).to eq('ubuntu')
          end"
          ))
        get_checks[0]
      }

      it 'registers the check with describe' do
        check[0].must_equal 'describe'
      end

      it 'registers the check with the describe argument' do
        check[1].must_equal ['the actual test']
      end

      it 'registers the check with the provided proc' do
        check[2].must_be_kind_of Proc
      end
    end
  end
end