| // Copyright 2017 The kubecfg authors |
| // |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package utils |
| |
| import ( |
| "encoding/json" |
| "reflect" |
| "sort" |
| "testing" |
| ) |
| |
| func TestJsonWalk(t *testing.T) { |
| fooObj := map[string]interface{}{ |
| "apiVersion": "test", |
| "kind": "Foo", |
| } |
| barObj := map[string]interface{}{ |
| "apiVersion": "test", |
| "kind": "Bar", |
| } |
| |
| tests := []struct { |
| input string |
| result []interface{} |
| error string |
| }{ |
| { |
| // nil input |
| input: `null`, |
| result: []interface{}{}, |
| }, |
| { |
| // single basic object |
| input: `{"apiVersion": "test", "kind": "Foo"}`, |
| result: []interface{}{fooObj}, |
| }, |
| { |
| // array of objects |
| input: `[{"apiVersion": "test", "kind": "Foo"}, {"apiVersion": "test", "kind": "Bar"}]`, |
| result: []interface{}{barObj, fooObj}, |
| }, |
| { |
| // object of objects |
| input: `{"foo": {"apiVersion": "test", "kind": "Foo"}, "bar": {"apiVersion": "test", "kind": "Bar"}}`, |
| result: []interface{}{barObj, fooObj}, |
| }, |
| { |
| // Deeply nested |
| input: `{"foo": [[{"apiVersion": "test", "kind": "Foo"}], {"apiVersion": "test", "kind": "Bar"}]}`, |
| result: []interface{}{barObj, fooObj}, |
| }, |
| { |
| // Error: nested misplaced value |
| input: `{"foo": {"bar": [null, 42]}}`, |
| error: "Looking for kubernetes object at <top>.foo.bar[1], but instead found float64", |
| }, |
| } |
| |
| for i, test := range tests { |
| t.Logf("%d: %s", i, test.input) |
| var top interface{} |
| if err := json.Unmarshal([]byte(test.input), &top); err != nil { |
| t.Errorf("Failed to unmarshal %q: %v", test.input, err) |
| continue |
| } |
| objs, err := jsonWalk(&walkContext{label: "<top>"}, top) |
| if test.error != "" { |
| // expect error |
| if err == nil { |
| t.Errorf("Test %d failed to fail", i) |
| } else if err.Error() != test.error { |
| t.Errorf("Test %d failed with %q but expected %q", i, err, test.error) |
| } |
| |
| continue |
| } |
| |
| // expect success |
| if err != nil { |
| t.Errorf("Test %d failed: %v", i, err) |
| continue |
| } |
| keyFunc := func(i int) string { |
| v := objs[i].(map[string]interface{}) |
| return v["kind"].(string) |
| } |
| sort.Slice(objs, func(i, j int) bool { |
| return keyFunc(i) < keyFunc(j) |
| }) |
| if !reflect.DeepEqual(objs, test.result) { |
| t.Errorf("Expected %v, got %v", test.result, objs) |
| } |
| } |
| } |