Federico Paolinelli 322790226b Add an echo client to be used instead of nc.
nc behaviour depends on the implementation version of what's on the current host.
Here we use our own client with stable behaviour.

Signed-off-by: Federico Paolinelli <fpaoline@redhat.com>
2020-10-02 15:56:27 +02:00

99 lines
2.7 KiB
Go

package main_test
import (
"fmt"
"io/ioutil"
"net"
"os/exec"
"strings"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/gbytes"
"github.com/onsi/gomega/gexec"
)
var serverBinaryPath, clientBinaryPath string
var _ = SynchronizedBeforeSuite(func() []byte {
serverBinaryPath, err := gexec.Build("github.com/containernetworking/plugins/pkg/testutils/echo/server")
Expect(err).NotTo(HaveOccurred())
clientBinaryPath, err := gexec.Build("github.com/containernetworking/plugins/pkg/testutils/echo/client")
Expect(err).NotTo(HaveOccurred())
return []byte(fmt.Sprintf("%s,%s", serverBinaryPath, clientBinaryPath))
}, func(data []byte) {
binaries := strings.Split(string(data), ",")
serverBinaryPath = binaries[0]
clientBinaryPath = binaries[1]
})
var _ = SynchronizedAfterSuite(func() {}, func() {
gexec.CleanupBuildArtifacts()
})
var _ = Describe("Echosvr", func() {
var session *gexec.Session
BeforeEach(func() {
var err error
cmd := exec.Command(serverBinaryPath)
session, err = gexec.Start(cmd, GinkgoWriter, GinkgoWriter)
Expect(err).NotTo(HaveOccurred())
})
AfterEach(func() {
session.Kill().Wait()
})
Context("Server test", func() {
It("starts and doesn't terminate immediately", func() {
Consistently(session).ShouldNot(gexec.Exit())
})
tryConnect := func() (net.Conn, error) {
programOutput := session.Out.Contents()
addr := strings.TrimSpace(string(programOutput))
conn, err := net.Dial("tcp", addr)
if err != nil {
return nil, err
}
return conn, err
}
It("prints its listening address to stdout", func() {
Eventually(session.Out).Should(gbytes.Say("\n"))
conn, err := tryConnect()
Expect(err).NotTo(HaveOccurred())
conn.Close()
})
It("will echo data back to us", func() {
Eventually(session.Out).Should(gbytes.Say("\n"))
conn, err := tryConnect()
Expect(err).NotTo(HaveOccurred())
defer conn.Close()
fmt.Fprintf(conn, "hello\n")
Expect(ioutil.ReadAll(conn)).To(Equal([]byte("hello")))
})
})
Context("Client Server Test", func() {
It("starts and doesn't terminate immediately", func() {
Consistently(session).ShouldNot(gexec.Exit())
})
It("connects successfully using echo client", func() {
Eventually(session.Out).Should(gbytes.Say("\n"))
serverAddress := strings.TrimSpace(string(session.Out.Contents()))
fmt.Println("Server address", string(serverAddress))
cmd := exec.Command(clientBinaryPath, "-target", serverAddress, "-message", "hello")
clientSession, err := gexec.Start(cmd, GinkgoWriter, GinkgoWriter)
Expect(err).NotTo(HaveOccurred())
Eventually(clientSession.Out).Should(gbytes.Say("hello"))
Eventually(clientSession).Should(gexec.Exit())
})
})
})