fixes #4728 problem that arise because of the zero value of unknown and the loging of kind_sorter

this messes helm template when having unknown (ie NOTES) or other files and the sorter catches namespace

Signed-off-by: Filinto Duran <duranto@gmail.com>

pkg/tiller/kind_sorter.go

@@ -124,12 +124,13 @@ func (k *kindSorter) Less(i, j int) bool {
 	b := k.manifests[j]
 	first, aok := k.ordering[a.Head.Kind]
 	second, bok := k.ordering[b.Head.Kind]
-	// if same kind (including unknown) sub sort alphanumeric
-	if first == second {
-		// if both are unknown and of different kind sort by kind alphabetically
-		if !aok && !bok && a.Head.Kind != b.Head.Kind {
+	// if both are unknown
+	if !aok && !bok {
+		// and of different kind sort by kind alphabetically
+		if a.Head.Kind != b.Head.Kind {
 			return a.Head.Kind < b.Head.Kind
 		}
+		// and of same kind sort by name alphabetically
 		return a.Name < b.Name
 	}
 	// unknown kind is last
@@ -139,6 +140,10 @@ func (k *kindSorter) Less(i, j int) bool {
 	if !bok {
 		return true
 	}
+	// if same kind sort alphanumeric
+	if first == second {
+		return a.Name < b.Name
+	}
 	// sort different kinds
 	return first < second
 }

pkg/tiller/kind_sorter_test.go

@@ -223,3 +223,39 @@ func TestKindSorterSubSort(t *testing.T) {
 		})
 	}
 }
+
+func TestKindSorterUnknownsWithNamespace(t *testing.T) {
+	// a.Kind=Namespace should win over b.Kind=Unknown even if the a.Name > b.Name
+	manifests := []Manifest{
+		{
+			Name: "a",
+			Head: &util.SimpleHead{Kind: "Namespace"},
+		},
+		{
+			Name: "N",
+			Head: &util.SimpleHead{Kind: "Unknown"},
+		},
+	}
+	for _, test := range []struct {
+		description string
+		order       SortOrder
+		expected    string
+	}{
+		// expectation is sorted by kind (unknown is last) and then sub sorted alphabetically within each group
+		{"Namespace,Unknown", InstallOrder, "aN"},
+	} {
+		var buf bytes.Buffer
+		t.Run(test.description, func(t *testing.T) {
+
+			defer buf.Reset()
+			m := make([]Manifest, len(manifests))
+			copy(m, manifests)
+			for _, r := range sortByKind(m, test.order) {
+				buf.WriteString(r.Name)
+			}
+			if got := buf.String(); got != test.expected {
+				t.Errorf("Expected %q, got %q", test.expected, got)
+			}
+		})
+	}
+}