Serge Bazanski | be538db | 2020-11-12 00:22:42 +0100 | [diff] [blame] | 1 | // Copyright 2017 The kubecfg authors |
| 2 | // |
| 3 | // |
| 4 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | // you may not use this file except in compliance with the License. |
| 6 | // You may obtain a copy of the License at |
| 7 | // |
| 8 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | // |
| 10 | // Unless required by applicable law or agreed to in writing, software |
| 11 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | // See the License for the specific language governing permissions and |
| 14 | // limitations under the License. |
| 15 | |
| 16 | package utils |
| 17 | |
| 18 | import ( |
| 19 | "encoding/json" |
| 20 | "reflect" |
| 21 | "sort" |
| 22 | "testing" |
| 23 | ) |
| 24 | |
| 25 | func TestJsonWalk(t *testing.T) { |
| 26 | fooObj := map[string]interface{}{ |
| 27 | "apiVersion": "test", |
| 28 | "kind": "Foo", |
| 29 | } |
| 30 | barObj := map[string]interface{}{ |
| 31 | "apiVersion": "test", |
| 32 | "kind": "Bar", |
| 33 | } |
| 34 | |
| 35 | tests := []struct { |
| 36 | input string |
| 37 | result []interface{} |
| 38 | error string |
| 39 | }{ |
| 40 | { |
| 41 | // nil input |
| 42 | input: `null`, |
| 43 | result: []interface{}{}, |
| 44 | }, |
| 45 | { |
| 46 | // single basic object |
| 47 | input: `{"apiVersion": "test", "kind": "Foo"}`, |
| 48 | result: []interface{}{fooObj}, |
| 49 | }, |
| 50 | { |
| 51 | // array of objects |
| 52 | input: `[{"apiVersion": "test", "kind": "Foo"}, {"apiVersion": "test", "kind": "Bar"}]`, |
| 53 | result: []interface{}{barObj, fooObj}, |
| 54 | }, |
| 55 | { |
| 56 | // object of objects |
| 57 | input: `{"foo": {"apiVersion": "test", "kind": "Foo"}, "bar": {"apiVersion": "test", "kind": "Bar"}}`, |
| 58 | result: []interface{}{barObj, fooObj}, |
| 59 | }, |
| 60 | { |
| 61 | // Deeply nested |
| 62 | input: `{"foo": [[{"apiVersion": "test", "kind": "Foo"}], {"apiVersion": "test", "kind": "Bar"}]}`, |
| 63 | result: []interface{}{barObj, fooObj}, |
| 64 | }, |
| 65 | { |
| 66 | // Error: nested misplaced value |
| 67 | input: `{"foo": {"bar": [null, 42]}}`, |
| 68 | error: "Looking for kubernetes object at <top>.foo.bar[1], but instead found float64", |
| 69 | }, |
| 70 | } |
| 71 | |
| 72 | for i, test := range tests { |
| 73 | t.Logf("%d: %s", i, test.input) |
| 74 | var top interface{} |
| 75 | if err := json.Unmarshal([]byte(test.input), &top); err != nil { |
| 76 | t.Errorf("Failed to unmarshal %q: %v", test.input, err) |
| 77 | continue |
| 78 | } |
| 79 | objs, err := jsonWalk(&walkContext{label: "<top>"}, top) |
| 80 | if test.error != "" { |
| 81 | // expect error |
| 82 | if err == nil { |
| 83 | t.Errorf("Test %d failed to fail", i) |
| 84 | } else if err.Error() != test.error { |
| 85 | t.Errorf("Test %d failed with %q but expected %q", i, err, test.error) |
| 86 | } |
| 87 | |
| 88 | continue |
| 89 | } |
| 90 | |
| 91 | // expect success |
| 92 | if err != nil { |
| 93 | t.Errorf("Test %d failed: %v", i, err) |
| 94 | continue |
| 95 | } |
| 96 | keyFunc := func(i int) string { |
| 97 | v := objs[i].(map[string]interface{}) |
| 98 | return v["kind"].(string) |
| 99 | } |
| 100 | sort.Slice(objs, func(i, j int) bool { |
| 101 | return keyFunc(i) < keyFunc(j) |
| 102 | }) |
| 103 | if !reflect.DeepEqual(objs, test.result) { |
| 104 | t.Errorf("Expected %v, got %v", test.result, objs) |
| 105 | } |
| 106 | } |
| 107 | } |