require "helper"
require "inspec/resource"
require "resources/aws/aws_iam_group"

require "resource_support/aws"

# MAIGSB = MockAwsIamGroupSingularBackend
# Abbreviation not used outside this file

#=============================================================================#
#                            Constructor Tests
#=============================================================================#
class AwsIamGroupConstructorTest < Minitest::Test

  def setup
    AwsIamGroup::BackendFactory.select(MAIGSB::Empty)
  end

  def test_rejects_empty_params
    assert_raises(ArgumentError) { AwsIamGroup.new }
  end

  def test_accepts_group_name_as_scalar
    AwsIamGroup.new("Whatever")
  end

  def test_accepts_group_name_as_hash
    AwsIamGroup.new(group_name: "Whatever")
  end

  def test_rejects_unrecognized_params
    assert_raises(ArgumentError) { AwsIamGroup.new(shoe_size: 9) }
  end
end

#=============================================================================#
#                               Search / Recall
#=============================================================================#
class AwsIamGroupRecallTest < Minitest::Test

  def setup
    AwsIamGroup::BackendFactory.select(MAIGSB::Basic)
  end

  def test_search_hit_via_scalar_works
    assert AwsIamGroup.new("Administrator").exists?
  end

  def test_search_hit_via_hash_works
    assert AwsIamGroup.new(group_name: "Administrator").exists?
  end

  def test_search_miss_is_not_an_exception
    refute AwsIamGroup.new(group_name: "Whatever").exists?
  end
end

#=============================================================================#
#                               Properties
#=============================================================================#
class AwsIamGroupPropertiesTest < Minitest::Test

  def setup
    AwsIamGroup::BackendFactory.select(MAIGSB::Basic)
  end

  def test_property_users
    assert_equal(%w{user1 user2}, AwsIamGroup.new("Administrator").users)
    assert_nil(AwsIamGroup.new("nonexistent").users)
  end
end

#=============================================================================#
#                               Test Fixtures
#=============================================================================#
module MAIGSB
  class Empty < AwsBackendBase
    def get_group(query = {})
      raise Aws::IAM::Errors::NoSuchEntity.new(nil, nil)
    end
  end

  class Basic < AwsBackendBase
    def get_group(query = {})
      fixtures = [
        OpenStruct.new({
          path: "/",
          group_name: "Administrator",
          group_id: "AGPAQWERQWERQWERQWERQ",
          arn: "arn:aws:iam::111111111111:group/Administrator",
          create_date: DateTime.parse("2017-12-14 05:29:57 UTC"),
          users: [
            OpenStruct.new({
              user_name: "user1",
            }),
            OpenStruct.new({
              user_name: "user2",
            }),
          ],
        }),
        OpenStruct.new({
          path: "/",
          group_name: "AmazonEC2ReadOnlyAccess",
          group_id: "AGPAASDFASDFASDFASDFA",
          arn: "arn:aws:iam::111111111111:group/AmazonEC2ReadOnlyAccess",
          create_date: DateTime.parse("2017-12-15 17:37:14 UTC"),
        }),
      ]

      selected = fixtures.select do |group|
        group[:group_name].eql? query[:group_name]
      end

      if selected.empty?
        raise Aws::IAM::Errors::NoSuchEntity.new(nil, nil)
      end

      OpenStruct.new({ group: selected[0], users: selected[0].users })
    end
  end

end