Fix play kube command

Before, play kube wasn't properly setting the command. Fix this
Also, begin a dedicated test suite for play kube to catch regressions like this in the future

Signed-off-by: Peter Hunt <pehunt@redhat.com>

pkg/adapter/pods.go

@@ -676,7 +676,7 @@ func kubeContainerToCreateConfig(ctx context.Context, containerYAML v1.Container
 	if imageData != nil && imageData.Config != nil {
 		containerConfig.Command = append(containerConfig.Command, imageData.Config.Entrypoint...)
 	}
-	if len(containerConfig.Command) != 0 {
+	if len(containerYAML.Command) != 0 {
 		containerConfig.Command = append(containerConfig.Command, containerYAML.Command...)
 	} else if imageData != nil && imageData.Config != nil {
 		containerConfig.Command = append(containerConfig.Command, imageData.Config.Cmd...)

test/e2e/play_kube_test.go

@@ -0,0 +1,123 @@
+// +build !remoteclient
+
+package integration
+
+import (
+	"os"
+	"path/filepath"
+	"text/template"
+
+	. "github.com/containers/libpod/test/utils"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var yamlTemplate = `
+apiVersion: v1
+kind: Pod
+metadata:
+  creationTimestamp: "2019-07-17T14:44:08Z"
+  labels:
+    app: {{ .Name }}
+  name: {{ .Name }}
+spec:
+  containers:
+{{ with .Containers }}
+  {{ range . }}
+  - command:
+    - {{ .Cmd }}
+    env:
+    - name: PATH
+      value: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+    - name: TERM
+      value: xterm
+    - name: HOSTNAME
+    - name: container
+      value: podman
+    image: {{ .Image }}
+    name: {{ .Name }}
+    resources: {}
+    securityContext:
+      allowPrivilegeEscalation: true
+      capabilities: {}
+      privileged: false
+      readOnlyRootFilesystem: false
+    workingDir: /
+  {{ end }}
+{{ end }}
+status: {}
+`
+
+type Pod struct {
+	Name       string
+	Containers []Container
+}
+
+type Container struct {
+	Cmd   string
+	Image string
+	Name  string
+}
+
+func generateKubeYaml(ctrs []Container, fileName string) error {
+	f, err := os.Create(fileName)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	testPod := Pod{"test", ctrs}
+
+	t, err := template.New("pod").Parse(yamlTemplate)
+	if err != nil {
+		return err
+	}
+
+	if err := t.Execute(f, testPod); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+var _ = Describe("Podman generate kube", 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.Cleanup()
+		f := CurrentGinkgoTestDescription()
+		processTestResult(f)
+	})
+
+	It("podman play kube test correct command", func() {
+		ctrName := "testCtr"
+		ctrCmd := "top"
+		testContainer := Container{ctrCmd, ALPINE, ctrName}
+		tempFile := filepath.Join(podmanTest.TempDir, "kube.yaml")
+
+		err := generateKubeYaml([]Container{testContainer}, tempFile)
+		Expect(err).To(BeNil())
+
+		kube := podmanTest.Podman([]string{"play", "kube", tempFile})
+		kube.WaitWithDefaultTimeout()
+		Expect(kube.ExitCode()).To(Equal(0))
+
+		inspect := podmanTest.Podman([]string{"inspect", ctrName})
+		inspect.WaitWithDefaultTimeout()
+		Expect(inspect.ExitCode()).To(Equal(0))
+		Expect(inspect.OutputToString()).To(ContainSubstring(ctrCmd))
+	})
+})