test unknown field case

Signed-off-by: Michael Crenshaw <[email protected]>

pkg/diff/diff_test.go

@@ -1152,6 +1152,29 @@ spec:
 	assert.Equal(t, "200m", requestsAfter["cpu"])
 }
 
+func TestRemarshalResources_stripTypes_unknownField(t *testing.T) {
+	un := unstructured.Unstructured{Object: map[string]interface{}{
+		"apiVersion": "v1",
+		"kind":       "Pod",
+		"spec": map[string]interface{}{
+			"containers": []interface{}{
+				map[string]interface{}{
+					"resources": map[string]interface{}{
+						"requests": map[string]interface{}{
+							"cpu": 0.2,
+						},
+					},
+				},
+			},
+		},
+		"unknownField": "unknown",
+	}}
+	afterUn := remarshal(&un, applyOptions(diffOptionsForTest()))
+	requestsAfter := afterUn.Object["spec"].(map[string]interface{})["containers"].([]interface{})[0].(map[string]interface{})["resources"].(map[string]interface{})["requests"].(map[string]interface{})
+	// Since there's an unknown field, we can't unmarshal into the Pod type, so the field doesn't get normalized to "200m".
+	assert.Equal(t, float64(0.2), requestsAfter["cpu"])
+}
+
 func ExampleDiff() {
 	expectedResource := unstructured.Unstructured{}
 	if err := yaml.Unmarshal([]byte(`