97 lines
2.6 KiB
Go
97 lines
2.6 KiB
Go
/*
|
|
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
|
|
*
|
|
* 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 sql
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"reflect"
|
|
"testing"
|
|
|
|
"github.com/alecthomas/participle"
|
|
"github.com/bcicen/jstream"
|
|
)
|
|
|
|
func getJSONStructs(b []byte) ([]interface{}, error) {
|
|
dec := jstream.NewDecoder(bytes.NewBuffer(b), 0).ObjectAsKVS()
|
|
var result []interface{}
|
|
for parsedVal := range dec.Stream() {
|
|
result = append(result, parsedVal.Value)
|
|
}
|
|
if err := dec.Err(); err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func TestJsonpathEval(t *testing.T) {
|
|
f, err := os.Open(filepath.Join("jsondata", "books.json"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
b, err := ioutil.ReadAll(f)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
p := participle.MustBuild(
|
|
&JSONPath{},
|
|
participle.Lexer(sqlLexer),
|
|
participle.CaseInsensitive("Keyword"),
|
|
)
|
|
cases := []struct {
|
|
str string
|
|
res []interface{}
|
|
}{
|
|
{"s.title", []interface{}{"Murder on the Orient Express", "The Robots of Dawn", "Pigs Have Wings"}},
|
|
{"s.authorInfo.yearRange", []interface{}{[]interface{}{1890.0, 1976.0}, []interface{}{1920.0, 1992.0}, []interface{}{1881.0, 1975.0}}},
|
|
{"s.authorInfo.name", []interface{}{"Agatha Christie", "Isaac Asimov", "P. G. Wodehouse"}},
|
|
{"s.authorInfo.yearRange[0]", []interface{}{1890.0, 1920.0, 1881.0}},
|
|
{"s.publicationHistory[0].pages", []interface{}{256.0, 336.0, nil}},
|
|
}
|
|
for i, tc := range cases {
|
|
jp := JSONPath{}
|
|
err := p.ParseString(tc.str, &jp)
|
|
// fmt.Println(jp)
|
|
if err != nil {
|
|
t.Fatalf("parse failed!: %d %v %s", i, err, tc)
|
|
}
|
|
|
|
// Read only the first json object from the file
|
|
recs, err := getJSONStructs(b)
|
|
if err != nil || len(recs) != 3 {
|
|
t.Fatalf("%v or length was not 3", err)
|
|
}
|
|
|
|
for j, rec := range recs {
|
|
// fmt.Println(rec)
|
|
r, err := jsonpathEval(jp.PathExpr, rec)
|
|
if err != nil {
|
|
t.Errorf("Error: %d %d %v", i, j, err)
|
|
}
|
|
if !reflect.DeepEqual(r, tc.res[j]) {
|
|
fmt.Printf("%#v (%v) != %v (%v)\n", r, reflect.TypeOf(r), tc.res[j], reflect.TypeOf(tc.res[j]))
|
|
t.Errorf("case: %d %d failed", i, j)
|
|
}
|
|
}
|
|
}
|
|
}
|