diff --git a/pkg/resource/resid_test.go b/pkg/resource/resid_test.go
new file mode 100644
index 000000000..31eec89bf
--- /dev/null
+++ b/pkg/resource/resid_test.go
@@ -0,0 +1,91 @@
+package resource
+
+import (
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+var stringTests = []struct {
+	x ResId
+	s string
+}{
+	{ResId{gvk: schema.GroupVersionKind{Group: "g", Version: "v", Kind: "k"},
+		name: "nm", prefix: "p", namespace: "ns"}, "g_v_k_ns_p_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{Version: "v", Kind: "k"},
+		name: "nm", prefix: "p", namespace: "ns"}, "_v_k_ns_p_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{Kind: "k"},
+		name: "nm", prefix: "p", namespace: "ns"}, "__k_ns_p_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{},
+		name: "nm", prefix: "p", namespace: "ns"}, "___ns_p_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{},
+		name: "nm", prefix: "p"}, "____p_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{},
+		name: "nm"}, "_____nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{}}, "_____.yaml"},
+	{ResId{}, "_____.yaml"},
+}
+
+func TestString(t *testing.T) {
+	for _, hey := range stringTests {
+		if hey.x.String() != hey.s {
+			t.Fatalf("Actual: %v,  Expected: '%s'", hey.x, hey.s)
+		}
+	}
+}
+
+var gvknStringTests = []struct {
+	x ResId
+	s string
+}{
+	{ResId{gvk: schema.GroupVersionKind{Group: "g", Version: "v", Kind: "k"},
+		name: "nm", prefix: "p", namespace: "ns"}, "g_v_k_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{Version: "v", Kind: "k"},
+		name: "nm", prefix: "p", namespace: "ns"}, "v_k_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{Kind: "k"},
+		name: "nm", prefix: "p", namespace: "ns"}, "_k_nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{},
+		name: "nm", prefix: "p", namespace: "ns"}, "__nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{},
+		name: "nm", prefix: "p"}, "__nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{},
+		name: "nm"}, "__nm.yaml"},
+	{ResId{gvk: schema.GroupVersionKind{}}, "__.yaml"},
+	{ResId{}, "__.yaml"},
+}
+
+func TestGvknString(t *testing.T) {
+	for _, hey := range gvknStringTests {
+		if hey.x.GvknString() != hey.s {
+			t.Fatalf("Actual: %s,  Expected: '%s'", hey.x.GvknString(), hey.s)
+		}
+	}
+}
+
+var GvknEqualsTest = []struct {
+	x1 ResId
+	x2 ResId
+}{
+	{ResId{gvk: schema.GroupVersionKind{Group: "g", Version: "v", Kind: "k"},
+		name: "nm", prefix: "AA", namespace: "X"},
+		ResId{gvk: schema.GroupVersionKind{Group: "g", Version: "v", Kind: "k"},
+			name: "nm", prefix: "BB", namespace: "Z"}},
+	{ResId{gvk: schema.GroupVersionKind{Version: "v", Kind: "k"},
+		name: "nm", prefix: "AA", namespace: "X"},
+		ResId{gvk: schema.GroupVersionKind{Version: "v", Kind: "k"},
+			name: "nm", prefix: "BB", namespace: "Z"}},
+	{ResId{gvk: schema.GroupVersionKind{Kind: "k"},
+		name: "nm", prefix: "AA", namespace: "X"},
+		ResId{gvk: schema.GroupVersionKind{Kind: "k"},
+			name: "nm", prefix: "BB", namespace: "Z"}},
+	{ResId{name: "nm", prefix: "AA", namespace: "X"},
+		ResId{name: "nm", prefix: "BB", namespace: "Z"}},
+}
+
+func TestEquals(t *testing.T) {
+	for _, hey := range GvknEqualsTest {
+		if !hey.x1.GvknEquals(hey.x2) {
+			t.Fatalf("%v should equal %v", hey.x1, hey.x2)
+		}
+	}
+}