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package test_bindings
import (
"bytes"
"fmt"
"time"
"github.com/containers/podman/v3/libpod/define"
"github.com/containers/podman/v3/pkg/bindings/containers"
"github.com/containers/podman/v3/pkg/specgen"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gexec"
)
var _ = Describe("Podman containers attach", func() {
var (
bt *bindingTest
s *gexec.Session
)
BeforeEach(func() {
bt = newBindingTest()
bt.RestoreImagesFromCache()
s = bt.startAPIService()
time.Sleep(1 * time.Second)
err := bt.NewConnection()
Expect(err).ShouldNot(HaveOccurred())
})
AfterEach(func() {
s.Kill()
bt.cleanup()
})
It("can run top in container", func() {
name := "TopAttachTest"
id, err := bt.RunTopContainer(&name, nil, nil)
Expect(err).ShouldNot(HaveOccurred())
tickTock := time.NewTimer(2 * time.Second)
go func() {
<-tickTock.C
timeout := uint(5)
err := containers.Stop(bt.conn, id, new(containers.StopOptions).WithTimeout(timeout))
if err != nil {
GinkgoWriter.Write([]byte(err.Error()))
}
}()
stdout := &bytes.Buffer{}
stderr := &bytes.Buffer{}
go func() {
defer GinkgoRecover()
options := new(containers.AttachOptions).WithLogs(true).WithStream(true)
err := containers.Attach(bt.conn, id, nil, stdout, stderr, nil, options)
Expect(err).ShouldNot(HaveOccurred())
}()
time.Sleep(5 * time.Second)
// First character/First line of top output
Expect(stdout.String()).Should(ContainSubstring("Mem: "))
})
It("can echo data via cat in container", func() {
s := specgen.NewSpecGenerator(alpine.name, false)
s.Name = "CatAttachTest"
s.Terminal = true
s.Command = []string{"/bin/cat"}
ctnr, err := containers.CreateWithSpec(bt.conn, s, nil)
Expect(err).ShouldNot(HaveOccurred())
err = containers.Start(bt.conn, ctnr.ID, nil)
Expect(err).ShouldNot(HaveOccurred())
wait := define.ContainerStateRunning
_, err = containers.Wait(bt.conn, ctnr.ID, new(containers.WaitOptions).WithCondition([]define.ContainerStatus{wait}))
Expect(err).ShouldNot(HaveOccurred())
tickTock := time.NewTimer(2 * time.Second)
go func() {
<-tickTock.C
timeout := uint(5)
err := containers.Stop(bt.conn, ctnr.ID, new(containers.StopOptions).WithTimeout(timeout))
if err != nil {
GinkgoWriter.Write([]byte(err.Error()))
}
}()
msg := "Hello, World"
stdin := &bytes.Buffer{}
stdin.WriteString(msg + "\n")
stdout := &bytes.Buffer{}
stderr := &bytes.Buffer{}
go func() {
defer GinkgoRecover()
options := new(containers.AttachOptions).WithStream(true)
err := containers.Attach(bt.conn, ctnr.ID, stdin, stdout, stderr, nil, options)
Expect(err).ShouldNot(HaveOccurred())
}()
time.Sleep(5 * time.Second)
// Tty==true so we get echo'ed stdin + expected output
Expect(stdout.String()).Should(Equal(fmt.Sprintf("%[1]s\r\n%[1]s\r\n", msg)))
Expect(stderr.String()).Should(BeEmpty())
})
})
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