151 lines
4.3 KiB
Go
151 lines
4.3 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package server
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import (
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"bytes"
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"context"
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"os"
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"syscall"
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"testing"
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"time"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/cio"
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cioutil "github.com/containerd/containerd/pkg/ioutil"
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"github.com/stretchr/testify/assert"
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)
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func TestCWWrite(t *testing.T) {
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var buf bytes.Buffer
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cw := &cappedWriter{w: cioutil.NewNopWriteCloser(&buf), remain: 10}
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n, err := cw.Write([]byte("hello"))
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assert.NoError(t, err)
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assert.Equal(t, 5, n)
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n, err = cw.Write([]byte("helloworld"))
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assert.NoError(t, err, "no errors even it hits the cap")
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assert.Equal(t, 10, n, "no indication of partial write")
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assert.True(t, cw.isFull())
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assert.Equal(t, []byte("hellohello"), buf.Bytes(), "the underlying writer is capped")
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_, err = cw.Write([]byte("world"))
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assert.NoError(t, err)
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assert.True(t, cw.isFull())
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assert.Equal(t, []byte("hellohello"), buf.Bytes(), "the underlying writer is capped")
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}
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func TestCWClose(t *testing.T) {
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var buf bytes.Buffer
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cw := &cappedWriter{w: cioutil.NewNopWriteCloser(&buf), remain: 5}
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err := cw.Close()
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assert.NoError(t, err)
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}
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func TestDrainExecSyncIO(t *testing.T) {
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ctx := context.TODO()
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t.Run("NoTimeout", func(t *testing.T) {
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ep := &fakeExecProcess{
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id: t.Name(),
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pid: uint32(os.Getpid()),
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}
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attachDoneCh := make(chan struct{})
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time.AfterFunc(2*time.Second, func() { close(attachDoneCh) })
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assert.NoError(t, drainExecSyncIO(ctx, ep, 0, attachDoneCh))
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assert.Equal(t, 0, len(ep.actionEvents))
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})
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t.Run("With3Seconds", func(t *testing.T) {
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ep := &fakeExecProcess{
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id: t.Name(),
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pid: uint32(os.Getpid()),
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}
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attachDoneCh := make(chan struct{})
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time.AfterFunc(100*time.Second, func() { close(attachDoneCh) })
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assert.Error(t, drainExecSyncIO(ctx, ep, 3*time.Second, attachDoneCh))
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assert.Equal(t, []string{"Delete"}, ep.actionEvents)
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})
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}
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type fakeExecProcess struct {
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id string
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pid uint32
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actionEvents []string
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}
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// ID of the process
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func (p *fakeExecProcess) ID() string {
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return p.id
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}
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// Pid is the system specific process id
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func (p *fakeExecProcess) Pid() uint32 {
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return p.pid
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}
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// Start starts the process executing the user's defined binary
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func (p *fakeExecProcess) Start(context.Context) error {
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p.actionEvents = append(p.actionEvents, "Start")
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return nil
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}
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// Delete removes the process and any resources allocated returning the exit status
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func (p *fakeExecProcess) Delete(context.Context, ...containerd.ProcessDeleteOpts) (*containerd.ExitStatus, error) {
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p.actionEvents = append(p.actionEvents, "Delete")
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return nil, nil
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}
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// Kill sends the provided signal to the process
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func (p *fakeExecProcess) Kill(context.Context, syscall.Signal, ...containerd.KillOpts) error {
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p.actionEvents = append(p.actionEvents, "Kill")
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return nil
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}
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// Wait asynchronously waits for the process to exit, and sends the exit code to the returned channel
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func (p *fakeExecProcess) Wait(context.Context) (<-chan containerd.ExitStatus, error) {
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p.actionEvents = append(p.actionEvents, "Wait")
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return nil, nil
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}
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// CloseIO allows various pipes to be closed on the process
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func (p *fakeExecProcess) CloseIO(context.Context, ...containerd.IOCloserOpts) error {
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p.actionEvents = append(p.actionEvents, "CloseIO")
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return nil
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}
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// Resize changes the width and height of the process's terminal
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func (p *fakeExecProcess) Resize(ctx context.Context, w, h uint32) error {
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p.actionEvents = append(p.actionEvents, "Resize")
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return nil
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}
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// IO returns the io set for the process
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func (p *fakeExecProcess) IO() cio.IO {
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p.actionEvents = append(p.actionEvents, "IO")
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return nil
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}
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// Status returns the executing status of the process
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func (p *fakeExecProcess) Status(context.Context) (containerd.Status, error) {
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p.actionEvents = append(p.actionEvents, "Status")
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return containerd.Status{}, nil
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}
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