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

require "resource_support/aws"

# MVSSB = MockVpcSubnetSingleBackend
# Abbreviation not used outside this file

#=============================================================================#
#                            Constructor Tests
#=============================================================================#
class AwsSubnetConstructorTest < Minitest::Test
  def setup
    AwsSubnet::BackendFactory.select(AwsMVSSB::Basic)
  end

  def test_constructor_no_args_raises
    assert_raises(ArgumentError) { AwsSubnet.new }
  end

  def test_constructor_expected_well_formed_args
    AwsSubnet.new(subnet_id: "subnet-12345678")
  end

  def test_constructor_reject_unknown_resource_params
    assert_raises(ArgumentError) { AwsSubnet.new(bla: "blabla") }
  end
end

#=============================================================================#
#                               Recall
#=============================================================================#

class AwsSubnetRecallTest < Minitest::Test
  def setup
    AwsSubnet::BackendFactory.select(AwsMVSSB::Basic)
  end

  def test_search_hit_via_hash_with_vpc_id_and_subnet_id_works
    assert AwsSubnet.new(subnet_id: "subnet-12345678").exists?
  end

  def test_search_miss_is_not_an_exception
    refute AwsSubnet.new(subnet_id: "subnet-00000000").exists?
  end
end

#=============================================================================#
#                               properties
#=============================================================================#

class AwsSubnetPropertiesTest < Minitest::Test
  def setup
    AwsSubnet::BackendFactory.select(AwsMVSSB::Basic)
  end

  def test_property_subnet_id
    assert_equal("subnet-12345678", AwsSubnet.new(subnet_id: "subnet-12345678").subnet_id)
  end

  def test_property_vpc_id
    assert_equal("vpc-12345678", AwsSubnet.new(subnet_id: "subnet-12345678").vpc_id)
  end

  def test_property_cidr_block
    assert_equal("10.0.1.0/24", AwsSubnet.new(subnet_id: "subnet-12345678").cidr_block)
    assert_nil(AwsSubnet.new(subnet_id: "subnet-00000000").cidr_block)
  end

  def test_property_availability_zone
    assert_equal("us-east-1", AwsSubnet.new(subnet_id: "subnet-12345678").availability_zone)
    assert_nil(AwsSubnet.new(subnet_id: "subnet-00000000").availability_zone)
  end

  def test_property_available_ip_address_count
    assert_equal(251, AwsSubnet.new(subnet_id: "subnet-12345678").available_ip_address_count)
    assert_nil(AwsSubnet.new(subnet_id: "subnet-00000000").available_ip_address_count)
  end

  def test_property_ipv_6_cidr_block_association_set
    assert_equal([], AwsSubnet.new(subnet_id: "subnet-12345678").ipv_6_cidr_block_association_set)
    assert_nil(AwsSubnet.new(subnet_id: "subnet-00000000").ipv_6_cidr_block_association_set)
  end
end

#=============================================================================#
#                               Test Matchers
#=============================================================================#
class AwsSubnetPropertiesTest < Minitest::Test
  def test_matcher_assign_ipv_6_address_on_creation
    assert AwsSubnet.new(subnet_id: "subnet-12345678").assigning_ipv_6_address_on_creation
    refute AwsSubnet.new(subnet_id: "subnet-87654321").assigning_ipv_6_address_on_creation
  end

  def test_matcher_available
    assert AwsSubnet.new(subnet_id: "subnet-12345678").available?
    refute AwsSubnet.new(subnet_id: "subnet-87654321").available?
  end

  def test_matcher_default_for_az
    assert AwsSubnet.new(subnet_id: "subnet-12345678").default_for_az?
    refute AwsSubnet.new(subnet_id: "subnet-87654321").default_for_az?
  end

  def test_matcher_map_public_ip_on_launch
    assert AwsSubnet.new(subnet_id: "subnet-12345678").mapping_public_ip_on_launch
    refute AwsSubnet.new(subnet_id: "subnet-87654321").mapping_public_ip_on_launch
  end
end

#=============================================================================#
#                               Test Fixtures
#=============================================================================#

module AwsMVSSB
  class Basic < AwsBackendBase
    def describe_subnets(query)
      subnets = {
        "subnet-12345678" => OpenStruct.new({
          subnets: [
            OpenStruct.new({
              availability_zone: "us-east-1",
              available_ip_address_count: 251,
              cidr_block: "10.0.1.0/24",
              default_for_az: true,
              map_public_ip_on_launch: true,
              state: "available",
              subnet_id: "subnet-12345678",
              vpc_id: "vpc-12345678",
              ipv_6_cidr_block_association_set: [],
              assign_ipv_6_address_on_creation: true,
            }),
          ],
        }),
        "subnet-87654321" => OpenStruct.new({
          subnets: [
            OpenStruct.new({
              availability_zone: "us-east-1",
              available_ip_address_count: 251,
              cidr_block: "10.0.1.0/24",
              default_for_az: false,
              map_public_ip_on_launch: false,
              state: "pending",
              subnet_id: "subnet-87654321",
              vpc_id: "vpc-87654321",
              ipv_6_cidr_block_association_set: [],
              assign_ipv_6_address_on_creation: false,
            }),
          ],
        }),
        "empty" => OpenStruct.new({
          subnets: [],
        }),
      }

      return subnets[query[:filters][0][:values][0]] unless subnets[query[:filters][0][:values][0]].nil?

      subnets["empty"]
    end
  end
end