mirror of
https://github.com/kubernetes-sigs/prometheus-adapter.git
synced 2026-04-07 10:17:51 +00:00
462 lines
11 KiB
Go
462 lines
11 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package unstructured
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import (
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"fmt"
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"reflect"
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"testing"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/diff"
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"k8s.io/apimachinery/pkg/util/json"
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)
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// Definte a number of test types.
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type A struct {
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A int `json:"aa,omitempty"`
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B string `json:"ab,omitempty"`
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C bool `json:"ac,omitempty"`
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}
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type B struct {
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A A `json:"ba"`
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B string `json:"bb"`
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C map[string]string `json:"bc"`
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D []string `json:"bd"`
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}
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type C struct {
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A []A `json:"ca"`
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B `json:",inline"`
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C string `json:"cc"`
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D *int64 `json:"cd"`
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E map[string]int `json:"ce"`
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F []bool `json:"cf"`
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G []int `json:"cg"`
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H float32 `json:"ch"`
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I []interface{} `json:"ci"`
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}
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type D struct {
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A []interface{} `json:"da"`
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}
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type E struct {
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A interface{} `json:"ea"`
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}
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type F struct {
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A string `json:"fa"`
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B map[string]string `json:"fb"`
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C []A `json:"fc"`
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D int `json:"fd"`
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E float32 `json:"fe"`
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F []string `json:"ff"`
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G []int `json:"fg"`
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H []bool `json:"fh"`
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I []float32 `json:"fi"`
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}
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// Implement runtime.Object to make types usable for tests.
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func (c *C) GetObjectKind() schema.ObjectKind {
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return schema.EmptyObjectKind
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}
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func (d *D) GetObjectKind() schema.ObjectKind {
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return schema.EmptyObjectKind
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}
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func (e *E) GetObjectKind() schema.ObjectKind {
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return schema.EmptyObjectKind
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}
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func (f *F) GetObjectKind() schema.ObjectKind {
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return schema.EmptyObjectKind
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}
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func doRoundTrip(t *testing.T, item runtime.Object) {
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data, err := json.Marshal(item)
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if err != nil {
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t.Errorf("Error when marshaling object: %v", err)
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return
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}
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unstr := make(map[string]interface{})
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err = json.Unmarshal(data, &unstr)
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if err != nil {
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t.Errorf("Error when unmarshaling to unstructured: %v", err)
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return
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}
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data, err = json.Marshal(unstr)
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if err != nil {
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t.Errorf("Error when marshaling unstructured: %v", err)
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return
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}
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unmarshalledObj := reflect.New(reflect.TypeOf(item).Elem()).Interface()
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err = json.Unmarshal(data, &unmarshalledObj)
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if err != nil {
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t.Errorf("Error when unmarshaling to object: %v", err)
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return
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}
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if !reflect.DeepEqual(item, unmarshalledObj) {
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t.Errorf("Object changed during JSON operations, diff: %v", diff.ObjectReflectDiff(item, unmarshalledObj))
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return
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}
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newUnstr := make(map[string]interface{})
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err = DefaultConverter.ToUnstructured(item, &newUnstr)
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if err != nil {
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t.Errorf("ToUnstructured failed: %v", err)
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return
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}
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newObj := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
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err = DefaultConverter.FromUnstructured(newUnstr, newObj)
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if err != nil {
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t.Errorf("FromUnstructured failed: %v", err)
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return
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}
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if !reflect.DeepEqual(item, newObj) {
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t.Errorf("Object changed, diff: %v", diff.ObjectReflectDiff(item, newObj))
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}
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}
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func TestRoundTrip(t *testing.T) {
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intVal := int64(42)
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testCases := []struct {
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obj runtime.Object
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}{
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{
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// This (among others) tests nil map, slice and pointer.
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obj: &C{
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C: "ccc",
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},
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},
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{
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// This (among others) tests empty map and slice.
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obj: &C{
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A: []A{},
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C: "ccc",
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E: map[string]int{},
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I: []interface{}{},
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},
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},
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{
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obj: &C{
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A: []A{
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{
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A: 1,
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B: "11",
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C: true,
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},
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{
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A: 2,
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B: "22",
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C: false,
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},
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},
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B: B{
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A: A{
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A: 3,
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B: "33",
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},
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B: "bbb",
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C: map[string]string{
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"k1": "v1",
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"k2": "v2",
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},
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D: []string{"s1", "s2"},
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},
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C: "ccc",
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D: &intVal,
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E: map[string]int{
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"k1": 1,
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"k2": 2,
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},
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F: []bool{true, false, false},
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G: []int{1, 2, 5},
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H: 3.3,
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I: []interface{}{nil, nil, nil},
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},
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},
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{
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// Test slice of interface{} with empty slices.
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obj: &D{
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A: []interface{}{[]interface{}{}, []interface{}{}},
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},
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},
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{
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// Test slice of interface{} with different values.
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obj: &D{
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A: []interface{}{3.0, "3.0", nil},
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},
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},
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}
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for i := range testCases {
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doRoundTrip(t, testCases[i].obj)
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if t.Failed() {
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break
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}
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}
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}
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// Verifies that:
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// 1) serialized json -> object
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// 2) serialized json -> map[string]interface{} -> object
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// produces the same object.
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func doUnrecognized(t *testing.T, jsonData string, item runtime.Object, expectedErr error) {
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unmarshalledObj := reflect.New(reflect.TypeOf(item).Elem()).Interface()
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err := json.Unmarshal([]byte(jsonData), &unmarshalledObj)
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if (err != nil) != (expectedErr != nil) {
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t.Errorf("Unexpected error when unmarshaling to object: %v, expected: %v", err, expectedErr)
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return
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}
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unstr := make(map[string]interface{})
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err = json.Unmarshal([]byte(jsonData), &unstr)
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if err != nil {
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t.Errorf("Error when unmarshaling to unstructured: %v", err)
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return
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}
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newObj := reflect.New(reflect.TypeOf(item).Elem()).Interface().(runtime.Object)
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err = DefaultConverter.FromUnstructured(unstr, newObj)
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if (err != nil) != (expectedErr != nil) {
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t.Errorf("Unexpected error in FromUnstructured: %v, expected: %v", err, expectedErr)
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}
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if expectedErr == nil && !reflect.DeepEqual(unmarshalledObj, newObj) {
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t.Errorf("Object changed, diff: %v", diff.ObjectReflectDiff(unmarshalledObj, newObj))
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}
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}
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func TestUnrecognized(t *testing.T) {
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testCases := []struct {
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data string
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obj runtime.Object
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err error
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}{
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{
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data: "{\"da\":[3.0,\"3.0\",null]}",
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obj: &D{},
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},
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{
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data: "{\"ea\":[3.0,\"3.0\",null]}",
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obj: &E{},
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},
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{
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data: "{\"ea\":[null,null,null]}",
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obj: &E{},
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},
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{
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data: "{\"ea\":[[],[null]]}",
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obj: &E{},
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},
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{
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data: "{\"ea\":{\"a\":[],\"b\":null}}",
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obj: &E{},
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},
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{
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data: "{\"fa\":\"fa\",\"fb\":{\"a\":\"a\"}}",
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obj: &F{},
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},
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{
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data: "{\"fa\":\"fa\",\"fb\":{\"a\":null}}",
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obj: &F{},
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},
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{
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data: "{\"fc\":[null]}",
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obj: &F{},
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},
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{
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data: "{\"fc\":[{\"aa\":123,\"ab\":\"bbb\"}]}",
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obj: &F{},
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},
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{
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// Only unknown fields
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data: "{\"fx\":[{\"aa\":123,\"ab\":\"bbb\"}],\"fz\":123}",
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obj: &F{},
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},
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{
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data: "{\"fc\":[{\"aa\":\"aaa\",\"ab\":\"bbb\"}]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal string into Go value of type int"),
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},
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{
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data: "{\"fd\":123,\"fe\":3.5}",
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obj: &F{},
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},
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{
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data: "{\"ff\":[\"abc\"],\"fg\":[123],\"fh\":[true,false]}",
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obj: &F{},
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},
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{
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// Invalid string data
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data: "{\"fa\":123}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type string"),
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},
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{
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// Invalid string data
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data: "{\"fa\":13.5}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type string"),
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},
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{
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// Invalid string data
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data: "{\"fa\":true}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal bool into Go value of type string"),
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},
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{
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// Invalid []string data
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data: "{\"ff\":123}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type []string"),
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},
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{
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// Invalid []string data
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data: "{\"ff\":3.5}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type []string"),
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},
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{
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// Invalid []string data
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data: "{\"ff\":[123,345]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type string"),
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},
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{
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// Invalid []int data
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data: "{\"fg\":123}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type []int"),
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},
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{
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// Invalid []int data
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data: "{\"fg\":\"abc\"}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal string into Go value of type []int"),
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},
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{
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// Invalid []int data
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data: "{\"fg\":[\"abc\"]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal string into Go value of type int"),
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},
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{
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// Invalid []int data
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data: "{\"fg\":[3.5]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number 3.5 into Go value of type int"),
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},
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{
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// Invalid []int data
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data: "{\"fg\":[true,false]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number 3.5 into Go value of type int"),
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},
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{
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// Invalid []bool data
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data: "{\"fh\":123}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type []bool"),
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},
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{
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// Invalid []bool data
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data: "{\"fh\":\"abc\"}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal string into Go value of type []bool"),
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},
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{
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// Invalid []bool data
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data: "{\"fh\":[\"abc\"]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal string into Go value of type bool"),
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},
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{
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// Invalid []bool data
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data: "{\"fh\":[3.5]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type bool"),
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},
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{
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// Invalid []bool data
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data: "{\"fh\":[123]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type bool"),
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},
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{
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// Invalid []float data
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data: "{\"fi\":123}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal number into Go value of type []float32"),
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},
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{
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// Invalid []float data
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data: "{\"fi\":\"abc\"}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal string into Go value of type []float32"),
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},
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{
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// Invalid []float data
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data: "{\"fi\":[\"abc\"]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal string into Go value of type float32"),
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},
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{
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// Invalid []float data
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data: "{\"fi\":[true]}",
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obj: &F{},
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err: fmt.Errorf("json: cannot unmarshal bool into Go value of type float32"),
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},
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}
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for i := range testCases {
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doUnrecognized(t, testCases[i].data, testCases[i].obj, testCases[i].err)
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if t.Failed() {
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break
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}
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}
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}
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func TestFloatIntConversion(t *testing.T) {
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unstr := map[string]interface{}{"fd": float64(3)}
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var obj F
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if err := DefaultConverter.FromUnstructured(unstr, &obj); err != nil {
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t.Errorf("Unexpected error in FromUnstructured: %v", err)
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}
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data, err := json.Marshal(unstr)
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if err != nil {
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t.Fatalf("Error when marshaling unstructured: %v", err)
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}
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var unmarshalled F
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if err := json.Unmarshal(data, &unmarshalled); err != nil {
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t.Fatalf("Error when unmarshaling to object: %v", err)
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}
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if !reflect.DeepEqual(obj, unmarshalled) {
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t.Errorf("Incorrect conversion, diff: %v", diff.ObjectReflectDiff(obj, unmarshalled))
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}
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}
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