"golang.org/x/sys/unix"
"github.com/containernetworking/cni/pkg/testhelpers"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Test helper functions", func() {
Describe("MakeNetworkNS", func() {
It("should return the filepath to a network namespace", func() {
containerID := fmt.Sprintf("c-%x", rand.Int31())
nsPath := testhelpers.MakeNetworkNS(containerID)
Expect(nsPath).To(BeAnExistingFile())
testhelpers.RemoveNetworkNS(containerID)
})
It("should return a network namespace different from that of the caller", func() {
containerID := fmt.Sprintf("c-%x", rand.Int31())
By("discovering the inode of the current netns")
originalNetNSPath := currentNetNSPath()
originalNetNSInode, err := testhelpers.GetInode(originalNetNSPath)
Expect(err).NotTo(HaveOccurred())
By("creating a new netns")
createdNetNSPath := testhelpers.MakeNetworkNS(containerID)
defer testhelpers.RemoveNetworkNS(createdNetNSPath)
By("discovering the inode of the created netns")
command = exec.Command(pathToLoPlugin)
containerID = "some-container-id"
networkNS = testhelpers.MakeNetworkNS(containerID)
environ = []string{
fmt.Sprintf("CNI_CONTAINERID=%s", containerID),
fmt.Sprintf("CNI_NETNS=%s", networkNS),
fmt.Sprintf("CNI_IFNAME=%s", "this is ignored"),
fmt.Sprintf("CNI_ARGS=%s", "none"),
fmt.Sprintf("CNI_PATH=%s", "/some/test/path"),
}
command.Stdin = strings.NewReader("this doesn't matter")
})
AfterEach(func() {
Expect(testhelpers.RemoveNetworkNS(networkNS)).To(Succeed())
})
Context("when given a network namespace", func() {
It("sets the lo device to UP", func() {
command.Env = append(environ, fmt.Sprintf("CNI_COMMAND=%s", "ADD"))
session, err := gexec.Start(command, GinkgoWriter, GinkgoWriter)
Expect(err).NotTo(HaveOccurred())
Eventually(session).Should(gbytes.Say(`{.*}`))
Eventually(session).Should(gexec.Exit(0))
var lo *net.Interface
err = ns.WithNetNSPath(networkNS, true, func(hostNS *os.File) error {
var err error