podman volume exists

Add podman volume exists command with remote support.

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

test/e2e/volume_exists_test.go

@@ -0,0 +1,50 @@
+package integration
+
+import (
+	"os"
+
+	. "github.com/containers/podman/v2/test/utils"
+	"github.com/containers/storage/pkg/stringid"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Podman volume exists", func() {
+	var (
+		tempdir    string
+		err        error
+		podmanTest *PodmanTestIntegration
+	)
+
+	BeforeEach(func() {
+		tempdir, err = CreateTempDirInTempDir()
+		if err != nil {
+			os.Exit(1)
+		}
+		podmanTest = PodmanTestCreate(tempdir)
+		podmanTest.Setup()
+		podmanTest.SeedImages()
+	})
+
+	AfterEach(func() {
+		podmanTest.CleanupVolume()
+		f := CurrentGinkgoTestDescription()
+		processTestResult(f)
+
+	})
+
+	It("podman volume exists", func() {
+		vol := "vol" + stringid.GenerateNonCryptoID()
+		session := podmanTest.Podman([]string{"volume", "create", vol})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(BeZero())
+
+		session = podmanTest.Podman([]string{"volume", "exists", vol})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(0))
+
+		session = podmanTest.Podman([]string{"volume", "exists", stringid.GenerateNonCryptoID()})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ExitCode()).To(Equal(1))
+	})
+})