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// Copyright 2019 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package iptables contains a set of iptables tests implemented as TestCases
package iptables
import (
"context"
"fmt"
"net"
"time"
)
// IPExchangePort is the port the container listens on to receive the IP
// address of the local process.
const IPExchangePort = 2349
// TerminalStatement is the last statement in the test runner.
const TerminalStatement = "Finished!"
// TestTimeout is the timeout used for all tests.
const TestTimeout = 10 * time.Second
// NegativeTimeout is the time tests should wait to establish the negative
// case, i.e. that connections are not made.
const NegativeTimeout = 2 * time.Second
// A TestCase contains one action to run in the container and one to run
// locally. The actions run concurrently and each must succeed for the test
// pass.
type TestCase interface {
// Name returns the name of the test.
Name() string
// ContainerAction runs inside the container. It receives the IP of the
// local process.
ContainerAction(ctx context.Context, ip net.IP, ipv6 bool) error
// LocalAction runs locally. It receives the IP of the container.
LocalAction(ctx context.Context, ip net.IP, ipv6 bool) error
// ContainerSufficient indicates whether ContainerAction's return value
// alone indicates whether the test succeeded.
ContainerSufficient() bool
// LocalSufficient indicates whether LocalAction's return value alone
// indicates whether the test succeeded.
LocalSufficient() bool
}
// baseCase provides defaults for ContainerSufficient and LocalSufficient when
// both actions are required to finish.
type baseCase struct{}
// ContainerSufficient implements TestCase.ContainerSufficient.
func (*baseCase) ContainerSufficient() bool {
return false
}
// LocalSufficient implements TestCase.LocalSufficient.
func (*baseCase) LocalSufficient() bool {
return false
}
// localCase provides defaults for ContainerSufficient and LocalSufficient when
// only the local action is required to finish.
type localCase struct{}
// ContainerSufficient implements TestCase.ContainerSufficient.
func (*localCase) ContainerSufficient() bool {
return false
}
// LocalSufficient implements TestCase.LocalSufficient.
func (*localCase) LocalSufficient() bool {
return true
}
// containerCase provides defaults for ContainerSufficient and LocalSufficient
// when only the container action is required to finish.
type containerCase struct{}
// ContainerSufficient implements TestCase.ContainerSufficient.
func (*containerCase) ContainerSufficient() bool {
return true
}
// LocalSufficient implements TestCase.LocalSufficient.
func (*containerCase) LocalSufficient() bool {
return false
}
// Tests maps test names to TestCase.
//
// New TestCases are added by calling RegisterTestCase in an init function.
var Tests = map[string]TestCase{}
// RegisterTestCase registers tc so it can be run.
func RegisterTestCase(tc TestCase) {
if _, ok := Tests[tc.Name()]; ok {
panic(fmt.Sprintf("TestCase %s already registered.", tc.Name()))
}
Tests[tc.Name()] = tc
}
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