blob: d12da3cf3c987b4f080aec7076d67c5dc1313951 [file] [log] [blame]
// Copyright 2019 CUE 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 json
import (
"bytes"
"fmt"
"io"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"cuelang.org/go/cue/ast"
"cuelang.org/go/cue/format"
)
func TestExtract(t *testing.T) {
testCases := []struct {
name string
in string
out string
}{{
name: "no expand as JSON is not compact",
in: `{"a": 32}`,
out: `{a: 32}`,
}, {
name: "break across new lines",
in: `{"a":32,"b":[1,2],"c-d":"foo-bar-baz"}`,
out: `{
a: 32
b: [1, 2]
"c-d": "foo-bar-baz"
}`,
}, {
name: "multiline string",
in: `"a\nb\uD803\uDE6D\nc\\\t\nd\/"`,
out: `"""
a
b` + "\U00010E6D" + `
c\\\t
d/
"""`,
}, {
name: "multiline string indented",
in: `{"x":{"y":"a\nb\nc\nd"}}`,
out: `{
x: {
y: """
a
b
c
d
"""
}
}`,
}, {
name: "don't create multiline string for label",
in: `{"foo\nbar\nbaz\n": 2}`,
out: `{"foo\nbar\nbaz\n": 2}`,
}, {
name: "don't cap indentation",
in: `{"a":{"b":{"c":{"d":"a\nb\nc\nd"}}}}`,
out: `{
a: {
b: {
c: {
d: """
a
b
c
d
"""
}
}
}
}`,
}, {
name: "keep list formatting",
in: `[1,2,
3]`,
out: "[1, 2,\n\t3]",
}, {
// TODO: format.Node doesn't break large lists, it probably should.
name: "large list",
in: `[11111111111,2222222222,3333333333,4444444444,5555555555,6666666666]`,
out: "[11111111111, 2222222222, 3333333333, 4444444444, 5555555555, 6666666666]",
}, {
name: "reflow large values unconditionally",
in: `{"a": "11111111112222222222333333333344444444445555555555"}`,
out: "{\n\ta: \"11111111112222222222333333333344444444445555555555\"\n}",
}, {
name: "invalid JSON",
in: `[3_]`,
out: "invalid JSON for file \"invalid JSON\": invalid character '_' after array element",
}, {
name: "numeric keys: Issue #219",
in: `{"20": "a"}`,
out: `{"20": "a"}`,
}, {
name: "legacy: hidden fields",
in: `{"_legacy": 1}`,
out: `{"_legacy": 1}`,
}}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
out := &bytes.Buffer{}
e, err := Extract(tc.name, []byte(tc.in))
toString(out, e, err)
assert.Equal(t, tc.out, out.String())
out = &bytes.Buffer{}
d := NewDecoder(nil, tc.name, strings.NewReader(tc.in))
for {
e, err := d.Extract()
if err == io.EOF {
break
}
toString(out, e, err)
if err != nil {
break
}
}
assert.Equal(t, tc.out, out.String())
})
}
}
func toString(w *bytes.Buffer, e ast.Expr, err error) {
if err != nil {
fmt.Fprint(w, err)
return
}
b, err := format.Node(e)
if err != nil {
fmt.Fprint(w, err)
return
}
fmt.Fprint(w, string(b))
}