update labeller to include skaffoldVersion function

pkg/skaffold/runner/labeller.go

@@ -23,9 +23,9 @@ import (
 )
 
 const (
-	K8ManagedByLabel = "app.kubernetes.io/managed-by"
-	UnknownVersion   = "unknown"
-	Empty            = ""
+	K8ManagedByLabelKey = "app.kubernetes.io/managed-by"
+	UnknownVersion      = "unknown"
+	Empty               = ""
 )
 
 // DefaultLabeller adds K9 style managed-by label
@@ -37,21 +37,24 @@ func NewLabeller(verStr string) *DefaultLabeller {
 	if verStr == Empty {
 		verStr = version.Get().Version
 	}
+	if verStr == Empty {
+		verStr = UnknownVersion
+	}
 	return &DefaultLabeller{
 		version: verStr,
 	}
 }
 
 func (d *DefaultLabeller) Labels() map[string]string {
-	version := d.version
-	if version == Empty {
-		version = UnknownVersion
-	}
 	return map[string]string{
-		K8ManagedByLabel: fmt.Sprintf("skaffold-%s", version),
+		K8ManagedByLabelKey: d.skaffoldVersion(),
 	}
 }
 
-func (d *DefaultLabeller) K8sMangedByLabel() string {
-	return fmt.Sprintf("%s=skaffold-%s", K8ManagedByLabel, d.version)
+func (d *DefaultLabeller) K8sManagedByLabelKeyValueString() string {
+	return fmt.Sprintf("%s=%s", K8ManagedByLabelKey, d.skaffoldVersion())
+}
+
+func (d *DefaultLabeller) skaffoldVersion() string {
+	return fmt.Sprintf("skaffold-%s", d.version)
 }

pkg/skaffold/runner/labeller_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package runner
 
 import (
-	"fmt"
 	"testing"
 
 	"github.com/GoogleContainerTools/skaffold/testutil"
@@ -36,14 +35,12 @@ func TestDefaultLabeller(t *testing.T) {
 		},
 		{
 			description: "empty version should add postfix unknown",
-			expected:    fmt.Sprintf("skaffold-unknown"),
+			expected:    "skaffold-unknown",
 		},
 	}
 	for _, test := range tests {
 		testutil.Run(t, test.description, func(t *testutil.T) {
-			l := &DefaultLabeller{
-				version: test.version,
-			}
+			l := NewLabeller(test.version)
 			labels := l.Labels()
 
 			expected := map[string]string{"app.kubernetes.io/managed-by": test.expected}
@@ -52,12 +49,12 @@ func TestDefaultLabeller(t *testing.T) {
 	}
 }
 
-func TestK8sMangedByLabel(t *testing.T) {
+func TestK8sManagedByLabelKeyValueString(t *testing.T) {
 	defaultLabeller := &DefaultLabeller{
 		version: "version",
 	}
 	expected := "app.kubernetes.io/managed-by=skaffold-version"
-	actual := defaultLabeller.K8sMangedByLabel()
+	actual := defaultLabeller.K8sManagedByLabelKeyValueString()
 	if actual != expected {
 		t.Fatalf("actual label not equal to expected label. Actual: \n %s \n Expected: \n %s", actual, expected)
 	}