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minio/pkg/s3select/sql/parser_test.go

385 lines
8.6 KiB

/*
* 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"
"testing"
"github.com/alecthomas/participle"
"github.com/alecthomas/participle/lexer"
)
func TestJSONPathElement(t *testing.T) {
p := participle.MustBuild(
&JSONPathElement{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
participle.CaseInsensitive("Timeword"),
)
j := JSONPathElement{}
cases := []string{
// Key
"['name']", ".name", `."name"`,
// Index
"[2]", "[0]", "[100]",
// Object wilcard
".*",
// array wildcard
"[*]",
}
for i, tc := range cases {
err := p.ParseString(tc, &j)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
// repr.Println(j, repr.Indent(" "), repr.OmitEmpty(true))
}
}
func TestJSONPath(t *testing.T) {
p := participle.MustBuild(
&JSONPath{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
participle.CaseInsensitive("Timeword"),
)
j := JSONPath{}
cases := []string{
"S3Object",
"S3Object.id",
"S3Object.book.title",
"S3Object.id[1]",
"S3Object.id['abc']",
"S3Object.id['ab']",
"S3Object.words.*.id",
"S3Object.words.name[*].val",
"S3Object.words.name[*].val[*]",
"S3Object.words.name[*].val.*",
}
for i, tc := range cases {
err := p.ParseString(tc, &j)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
// repr.Println(j, repr.Indent(" "), repr.OmitEmpty(true))
}
}
func TestIdentifierParsing(t *testing.T) {
p := participle.MustBuild(
&Identifier{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
)
id := Identifier{}
validCases := []string{
"a",
"_a",
"abc_a",
"a2",
`"abc"`,
`"abc\a""ac"`,
}
for i, tc := range validCases {
err := p.ParseString(tc, &id)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
// repr.Println(id, repr.Indent(" "), repr.OmitEmpty(true))
}
invalidCases := []string{
"+a",
"-a",
"1a",
`"ab`,
`abc"`,
`aa""a`,
`"a"a"`,
}
for i, tc := range invalidCases {
err := p.ParseString(tc, &id)
if err == nil {
t.Fatalf("%d: %v", i, err)
}
// fmt.Println(tc, err)
}
}
func TestLiteralStringParsing(t *testing.T) {
var k ObjectKey
p := participle.MustBuild(
&ObjectKey{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
)
validCases := []string{
"['abc']",
"['ab''c']",
"['a''b''c']",
"['abc-x_1##@(*&(#*))/\\']",
}
for i, tc := range validCases {
err := p.ParseString(tc, &k)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
if string(*k.Lit) == "" {
t.Fatalf("Incorrect parse %#v", k)
}
// repr.Println(k, repr.Indent(" "), repr.OmitEmpty(true))
}
invalidCases := []string{
"['abc'']",
"['-abc'sc']",
"[abc']",
"['ac]",
}
for i, tc := range invalidCases {
err := p.ParseString(tc, &k)
if err == nil {
t.Fatalf("%d: %v", i, err)
}
// fmt.Println(tc, err)
}
}
func TestFunctionParsing(t *testing.T) {
var fex FuncExpr
p := participle.MustBuild(
&FuncExpr{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
participle.CaseInsensitive("Timeword"),
)
validCases := []string{
"count(*)",
"sum(2 + s.id)",
"sum(t)",
"avg(s.id[1])",
"coalesce(s.id[1], 2, 2 + 3)",
"cast(s as string)",
"cast(s AS INT)",
"cast(s as DECIMAL)",
"extract(YEAR from '2018-01-09')",
"extract(month from '2018-01-09')",
"extract(hour from '2018-01-09')",
"extract(day from '2018-01-09')",
"substring('abcd' from 2 for 2)",
"substring('abcd' from 2)",
"substring('abcd' , 2 , 2)",
"substring('abcd' , 22 )",
"trim(' aab ')",
"trim(leading from ' aab ')",
"trim(trailing from ' aab ')",
"trim(both from ' aab ')",
"trim(both '12' from ' aab ')",
"trim(leading '12' from ' aab ')",
"trim(trailing '12' from ' aab ')",
"count(23)",
}
for i, tc := range validCases {
err := p.ParseString(tc, &fex)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
// repr.Println(fex, repr.Indent(" "), repr.OmitEmpty(true))
}
}
func TestSqlLexer(t *testing.T) {
// s := bytes.NewBuffer([]byte("s.['name'].*.[*].abc.[\"abc\"]"))
s := bytes.NewBuffer([]byte("S3Object.words.*.id"))
// s := bytes.NewBuffer([]byte("COUNT(Id)"))
lex, err := sqlLexer.Lex(s)
if err != nil {
t.Fatal(err)
}
tokens, err := lexer.ConsumeAll(lex)
if err != nil {
t.Fatal(err)
}
// for i, t := range tokens {
// fmt.Printf("%d: %#v\n", i, t)
// }
if len(tokens) != 7 {
t.Fatalf("Expected 7 got %d", len(tokens))
}
}
func TestSelectWhere(t *testing.T) {
p := participle.MustBuild(
&Select{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
)
s := Select{}
cases := []string{
"select * from s3object",
"select a, b from s3object s",
"select a, b from s3object as s",
"select a, b from s3object as s where a = 1",
"select a, b from s3object s where a = 1",
"select a, b from s3object where a = 1",
}
for i, tc := range cases {
err := p.ParseString(tc, &s)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
// repr.Println(s, repr.Indent(" "), repr.OmitEmpty(true))
}
}
func TestLikeClause(t *testing.T) {
p := participle.MustBuild(
&Select{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
)
s := Select{}
cases := []string{
`select * from s3object where Name like 'abcd'`,
`select Name like 'abc' from s3object`,
`select * from s3object where Name not like 'abc'`,
`select * from s3object where Name like 'abc' escape 't'`,
`select * from s3object where Name like 'a\%' escape '?'`,
`select * from s3object where Name not like 'abc\' escape '?'`,
`select * from s3object where Name like 'a\%' escape LOWER('?')`,
`select * from s3object where Name not like LOWER('Bc\') escape '?'`,
}
for i, tc := range cases {
err := p.ParseString(tc, &s)
if err != nil {
t.Errorf("%d: %v", i, err)
}
}
}
func TestBetweenClause(t *testing.T) {
p := participle.MustBuild(
&Select{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
)
s := Select{}
cases := []string{
`select * from s3object where Id between 1 and 2`,
`select * from s3object where Id between 1 and 2 and name = 'Ab'`,
`select * from s3object where Id not between 1 and 2`,
`select * from s3object where Id not between 1 and 2 and name = 'Bc'`,
}
for i, tc := range cases {
err := p.ParseString(tc, &s)
if err != nil {
t.Errorf("%d: %v", i, err)
}
}
}
func TestFromClauseJSONPath(t *testing.T) {
p := participle.MustBuild(
&Select{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
)
s := Select{}
cases := []string{
"select * from s3object",
"select * from s3object[*].name",
"select * from s3object[*].books[*]",
"select * from s3object[*].books[*].name",
"select * from s3object where name > 2",
"select * from s3object[*].name where name > 2",
"select * from s3object[*].books[*] where name > 2",
"select * from s3object[*].books[*].name where name > 2",
"select * from s3object[*].books[*] s",
"select * from s3object[*].books[*].name as s",
"select * from s3object s where name > 2",
"select * from s3object[*].name as s where name > 2",
}
for i, tc := range cases {
err := p.ParseString(tc, &s)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
// repr.Println(s, repr.Indent(" "), repr.OmitEmpty(true))
}
}
func TestSelectParsing(t *testing.T) {
p := participle.MustBuild(
&Select{},
participle.Lexer(sqlLexer),
participle.CaseInsensitive("Keyword"),
)
s := Select{}
cases := []string{
"select * from s3object where name > 2 or value > 1 or word > 2",
"select s.word.id + 2 from s3object s",
"select 1-2-3 from s3object s limit 1",
}
for i, tc := range cases {
err := p.ParseString(tc, &s)
if err != nil {
t.Fatalf("%d: %v", i, err)
}
// repr.Println(s, repr.Indent(" "), repr.OmitEmpty(true))
}
}
func TestSqlLexerArithOps(t *testing.T) {
s := bytes.NewBuffer([]byte("year from select month hour distinct"))
lex, err := sqlLexer.Lex(s)
if err != nil {
t.Fatal(err)
}
tokens, err := lexer.ConsumeAll(lex)
if err != nil {
t.Fatal(err)
}
if len(tokens) != 7 {
t.Errorf("Expected 7 got %d", len(tokens))
}
// for i, t := range tokens {
// fmt.Printf("%d: %#v\n", i, t)
// }
}