Marcel van Lohuizen | 78783f2 | 2019-09-26 12:27:47 +0200 | [diff] [blame] | 1 | // Copyright 2019 CUE Authors |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package json |
| 16 | |
| 17 | import ( |
| 18 | "bytes" |
| 19 | "fmt" |
| 20 | "io" |
| 21 | "strings" |
| 22 | "testing" |
| 23 | |
Koichi Shiraishi | 30a4bee | 2019-12-26 03:06:48 +0900 | [diff] [blame] | 24 | "github.com/stretchr/testify/assert" |
| 25 | |
Marcel van Lohuizen | 78783f2 | 2019-09-26 12:27:47 +0200 | [diff] [blame] | 26 | "cuelang.org/go/cue/ast" |
| 27 | "cuelang.org/go/cue/format" |
Marcel van Lohuizen | 78783f2 | 2019-09-26 12:27:47 +0200 | [diff] [blame] | 28 | ) |
| 29 | |
| 30 | func TestExtract(t *testing.T) { |
| 31 | testCases := []struct { |
| 32 | name string |
| 33 | in string |
| 34 | out string |
| 35 | }{{ |
| 36 | name: "no expand as JSON is not compact", |
| 37 | in: `{"a": 32}`, |
| 38 | out: `{a: 32}`, |
| 39 | }, { |
| 40 | name: "break across new lines", |
| 41 | in: `{"a":32,"b":[1,2],"c-d":"foo-bar-baz"}`, |
| 42 | out: `{ |
| 43 | a: 32 |
| 44 | b: [1, 2] |
| 45 | "c-d": "foo-bar-baz" |
| 46 | }`, |
| 47 | }, { |
| 48 | name: "multiline string", |
| 49 | in: `"a\nb\uD803\uDE6D\nc\\\t\nd\/"`, |
| 50 | out: `""" |
| 51 | a |
| 52 | b` + "\U00010E6D" + ` |
| 53 | c\\\t |
| 54 | d/ |
| 55 | """`, |
| 56 | }, { |
| 57 | name: "multiline string indented", |
| 58 | in: `{"x":{"y":"a\nb\nc\nd"}}`, |
| 59 | out: `{ |
| 60 | x: { |
| 61 | y: """ |
| 62 | a |
| 63 | b |
| 64 | c |
| 65 | d |
| 66 | """ |
| 67 | } |
| 68 | }`, |
| 69 | }, { |
| 70 | name: "don't create multiline string for label", |
| 71 | in: `{"foo\nbar\nbaz\n": 2}`, |
| 72 | out: `{"foo\nbar\nbaz\n": 2}`, |
| 73 | }, { |
| 74 | name: "don't cap indentation", |
| 75 | in: `{"a":{"b":{"c":{"d":"a\nb\nc\nd"}}}}`, |
| 76 | out: `{ |
| 77 | a: { |
| 78 | b: { |
| 79 | c: { |
| 80 | d: """ |
| 81 | a |
| 82 | b |
| 83 | c |
| 84 | d |
| 85 | """ |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | }`, |
| 90 | }, { |
| 91 | name: "keep list formatting", |
| 92 | in: `[1,2, |
| 93 | 3]`, |
| 94 | out: "[1, 2,\n\t3]", |
| 95 | }, { |
| 96 | // TODO: format.Node doesn't break large lists, it probably should. |
| 97 | name: "large list", |
| 98 | in: `[11111111111,2222222222,3333333333,4444444444,5555555555,6666666666]`, |
| 99 | out: "[11111111111, 2222222222, 3333333333, 4444444444, 5555555555, 6666666666]", |
| 100 | }, { |
| 101 | name: "reflow large values unconditionally", |
| 102 | in: `{"a": "11111111112222222222333333333344444444445555555555"}`, |
| 103 | out: "{\n\ta: \"11111111112222222222333333333344444444445555555555\"\n}", |
| 104 | }, { |
| 105 | name: "invalid JSON", |
| 106 | in: `[3_]`, |
| 107 | out: "invalid JSON for file \"invalid JSON\": invalid character '_' after array element", |
Marcel van Lohuizen | f81c40b | 2019-12-10 15:11:52 +0100 | [diff] [blame] | 108 | }, { |
| 109 | name: "numeric keys: Issue #219", |
| 110 | in: `{"20": "a"}`, |
| 111 | out: `{"20": "a"}`, |
Marcel van Lohuizen | b756712 | 2019-12-18 10:44:38 +0100 | [diff] [blame] | 112 | }, { |
| 113 | name: "legacy: hidden fields", |
| 114 | in: `{"_legacy": 1}`, |
| 115 | out: `{"_legacy": 1}`, |
Marcel van Lohuizen | 78783f2 | 2019-09-26 12:27:47 +0200 | [diff] [blame] | 116 | }} |
| 117 | for _, tc := range testCases { |
| 118 | t.Run(tc.name, func(t *testing.T) { |
| 119 | out := &bytes.Buffer{} |
Marcel van Lohuizen | dd75ef6 | 2019-09-29 12:02:55 +0200 | [diff] [blame] | 120 | e, err := Extract(tc.name, []byte(tc.in)) |
Marcel van Lohuizen | 78783f2 | 2019-09-26 12:27:47 +0200 | [diff] [blame] | 121 | toString(out, e, err) |
| 122 | assert.Equal(t, tc.out, out.String()) |
| 123 | |
| 124 | out = &bytes.Buffer{} |
| 125 | d := NewDecoder(nil, tc.name, strings.NewReader(tc.in)) |
| 126 | for { |
| 127 | e, err := d.Extract() |
| 128 | if err == io.EOF { |
| 129 | break |
| 130 | } |
| 131 | toString(out, e, err) |
| 132 | if err != nil { |
| 133 | break |
| 134 | } |
| 135 | } |
| 136 | assert.Equal(t, tc.out, out.String()) |
| 137 | }) |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | func toString(w *bytes.Buffer, e ast.Expr, err error) { |
| 142 | if err != nil { |
| 143 | fmt.Fprint(w, err) |
| 144 | return |
| 145 | } |
| 146 | b, err := format.Node(e) |
| 147 | if err != nil { |
| 148 | fmt.Fprint(w, err) |
| 149 | return |
| 150 | } |
| 151 | fmt.Fprint(w, string(b)) |
| 152 | } |