Add an E2E test to verify basic namespace functionality

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>

test/e2e/namespace_test.go

@@ -0,0 +1,51 @@
+package integration
+
+import (
+	"os"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("Podman namespaces", func() {
+	var (
+		tempdir    string
+		err        error
+		podmanTest PodmanTest
+	)
+
+	BeforeEach(func() {
+		tempdir, err = CreateTempDirInTempDir()
+		if err != nil {
+			os.Exit(1)
+		}
+		podmanTest = PodmanCreate(tempdir)
+		podmanTest.RestoreAllArtifacts()
+	})
+
+	AfterEach(func() {
+		podmanTest.Cleanup()
+
+	})
+
+	It("podman namespace test", func() {
+		podman1 := podmanTest.Podman([]string{"--namespace", "test1", "run", "-d", ALPINE, "echo", "hello"})
+		podman1.WaitWithDefaultTimeout()
+		Expect(podman1.ExitCode()).To(Equal(0))
+
+		podman2 := podmanTest.Podman([]string{"--namespace", "test2", "ps", "-aq"})
+		podman2.WaitWithDefaultTimeout()
+		Expect(podman2.ExitCode()).To(Equal(0))
+		output := podman2.OutputToStringArray()
+		numCtrs := 0
+		for _, outputLine := range output {
+			if outputLine != "" {
+				numCtrs = numCtrs + 1
+			}
+		}
+		Expect(numCtrs).To(Equal(0))
+
+		numberOfCtrsNoNamespace := podmanTest.NumberOfContainers()
+		Expect(numberOfCtrsNoNamespace).To(Equal(1))
+	})
+})