kubeadm: updated cmd tests as discussed in SIG

After today's SIG meeting, it was discussed how to proceed with these
types of test-cmd tests.  They will live in kubeamd/test/cmd and will
provide a flag that will allow you to skip them (--kubeadm-cmd-skip) and
by default will fail if kubeadm binary is not present

cmd/kubeadm/BUILD

@@ -33,7 +33,7 @@ filegroup(
     srcs = [
         ":package-srcs",
         "//cmd/kubeadm/app:all-srcs",
-        "//cmd/kubeadm/test:all-srcs",
+        "//cmd/kubeadm/test/cmd:all-srcs",
     ],
     tags = ["automanaged"],
 )

cmd/kubeadm/test/cmd/BUILD

@@ -17,7 +17,7 @@ go_library(
 go_test(
     name = "go_default_test",
     srcs = ["token_test.go"],
-    args = ["--kubeadm-path=../kubeadm"],
+    args = ["--kubeadm-path=../../kubeadm"],
     data = ["//cmd/kubeadm"],
     library = ":go_default_library",
     tags = [

cmd/kubeadm/test/cmd/token_test.go

@@ -29,17 +29,11 @@ const (
 )
 
 var kubeadmPath = flag.String("kubeadm-path", filepath.Join(os.Getenv("KUBE_ROOT"), "cluster/kubeadm.sh"), "Location of kubeadm")
-var testCmd = true
-
-func init() {
-	if _, err := os.Stat(*kubeadmPath); os.IsNotExist(err) {
-		testCmd = false
-	}
-}
+var kubeadmCmdSkip = flag.Bool("kubeadm-cmd-skip", false, "Skip kubeadm cmd tests")
 
 func TestCmdTokenGenerate(t *testing.T) {
-	if !testCmd {
-		t.Log("kubeadm not found, skipping")
+	if *kubeadmCmdSkip {
+		t.Log("kubeadm cmd tests being skipped")
 		t.Skip()
 	}
 	stdout, _, err := RunCmd(*kubeadmPath, "ex", "token", "generate")
@@ -66,8 +60,8 @@ func TestCmdTokenGenerateTypoError(t *testing.T) {
 		with a non-zero status code after showing the command's usage, so that
 		the usage itself isn't captured as a token without the user noticing.
 	*/
-	if !testCmd {
-		t.Log("kubeadm not found, skipping")
+	if *kubeadmCmdSkip {
+		t.Log("kubeadm cmd tests being skipped")
 		t.Skip()
 	}
 

hack/make-rules/test-kubeadm-cmd.sh

@@ -28,5 +28,5 @@ KUBEADM_PATH="${KUBEADM_PATH:=$(kube::realpath "${KUBE_ROOT}")/cluster/kubeadm.s
 make -C "${KUBE_ROOT}" WHAT=cmd/kubeadm
 
 make -C "${KUBE_ROOT}" test \
-  WHAT=k8s.io/kubernetes/cmd/kubeadm/test \
+  WHAT=k8s.io/kubernetes/cmd/kubeadm/test/cmd \
   KUBE_TEST_ARGS="--kubeadm-path '${KUBEADM_PATH}'"

hack/verify-flags/known-flags.txt

@@ -325,6 +325,7 @@ kube-master
 kube-master-url
 kube-reserved
 kubeadm-path
+kubeadm-cmd-skip
 kubecfg-file
 kubectl-path
 kubelet-address