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/*
Copyright 2016 The Kubernetes 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 ebtables
import (
"strings"
"testing"
"k8s.io/utils/exec"
fakeexec "k8s.io/utils/exec/testing"
)
func TestEnsureChain(t *testing.T) {
fcmd := fakeexec.FakeCmd{
CombinedOutputScript: []fakeexec.FakeAction{
// Does not Exists
func() ([]byte, []byte, error) { return nil, nil, &fakeexec.FakeExitError{Status: 1} },
// Success
func() ([]byte, []byte, error) { return []byte{}, nil, nil },
// Exists
func() ([]byte, []byte, error) { return nil, nil, nil },
// Does not Exists
func() ([]byte, []byte, error) { return nil, nil, &fakeexec.FakeExitError{Status: 1} },
// Fail to create chain
func() ([]byte, []byte, error) { return nil, nil, &fakeexec.FakeExitError{Status: 2} },
},
}
fexec := fakeexec.FakeExec{
CommandScript: []fakeexec.FakeCommandAction{
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
},
}
runner := New(&fexec)
exists, err := runner.EnsureChain(TableFilter, "TEST-CHAIN")
if exists {
t.Errorf("expected exists = false")
}
if err != nil {
t.Errorf("expected err = nil")
}
exists, err = runner.EnsureChain(TableFilter, "TEST-CHAIN")
if !exists {
t.Errorf("expected exists = true")
}
if err != nil {
t.Errorf("expected err = nil")
}
exists, err = runner.EnsureChain(TableFilter, "TEST-CHAIN")
if exists {
t.Errorf("expected exists = false")
}
errStr := "Failed to ensure TEST-CHAIN chain: exit 2, output:"
if err == nil || !strings.Contains(err.Error(), errStr) {
t.Errorf("expected error: %q", errStr)
}
}
func TestEnsureRule(t *testing.T) {
fcmd := fakeexec.FakeCmd{
CombinedOutputScript: []fakeexec.FakeAction{
// Exists
func() ([]byte, []byte, error) {
return []byte(`Bridge table: filter
Bridge chain: OUTPUT, entries: 4, policy: ACCEPT
-j TEST
`), nil, nil
},
// Does not Exists.
func() ([]byte, []byte, error) {
return []byte(`Bridge table: filter
Bridge chain: TEST, entries: 0, policy: ACCEPT`), nil, nil
},
// Fail to create
func() ([]byte, []byte, error) { return nil, nil, &fakeexec.FakeExitError{Status: 2} },
},
}
fexec := fakeexec.FakeExec{
CommandScript: []fakeexec.FakeCommandAction{
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
},
}
runner := New(&fexec)
exists, err := runner.EnsureRule(Append, TableFilter, ChainOutput, "-j", "TEST")
if !exists {
t.Errorf("expected exists = true")
}
if err != nil {
t.Errorf("expected err = nil")
}
exists, err = runner.EnsureRule(Append, TableFilter, ChainOutput, "-j", "NEXT-TEST")
if exists {
t.Errorf("expected exists = false")
}
errStr := "Failed to ensure rule: exit 2, output: "
if err == nil || err.Error() != errStr {
t.Errorf("expected error: %q", errStr)
}
}
func TestDeleteRule(t *testing.T) {
fcmd := fakeexec.FakeCmd{
CombinedOutputScript: []fakeexec.FakeAction{
// Exists
func() ([]byte, []byte, error) {
return []byte(`Bridge table: filter
Bridge chain: OUTPUT, entries: 4, policy: ACCEPT
-j TEST
`), nil, nil
},
// Fail to delete
func() ([]byte, []byte, error) { return nil, nil, &fakeexec.FakeExitError{Status: 2} },
// Does not Exists.
func() ([]byte, []byte, error) {
return []byte(`Bridge table: filter
Bridge chain: TEST, entries: 0, policy: ACCEPT`), nil, nil
},
},
}
fexec := fakeexec.FakeExec{
CommandScript: []fakeexec.FakeCommandAction{
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
},
}
runner := New(&fexec)
err := runner.DeleteRule(TableFilter, ChainOutput, "-j", "TEST")
errStr := "Failed to delete rule: exit 2, output: "
if err == nil || err.Error() != errStr {
t.Errorf("expected error: %q", errStr)
}
err = runner.DeleteRule(TableFilter, ChainOutput, "-j", "TEST")
if err != nil {
t.Errorf("expected err = nil")
}
}
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