github.com/dolthub/go-mysql-server@v0.18.0/sql/expression/function/json/json_value_test.go (about)

     1  // Copyright 2023 Dolthub, Inc.
     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  	"strings"
    19  	"testing"
    20  
    21  	"github.com/stretchr/testify/require"
    22  	"gopkg.in/src-d/go-errors.v1"
    23  
    24  	"github.com/dolthub/go-mysql-server/sql"
    25  	"github.com/dolthub/go-mysql-server/sql/expression"
    26  	"github.com/dolthub/go-mysql-server/sql/types"
    27  )
    28  
    29  func TestJsonValue(t *testing.T) {
    30  	_, err := NewJSONValid()
    31  	require.True(t, errors.Is(err, sql.ErrInvalidArgumentNumber))
    32  
    33  	tests := []struct {
    34  		row  sql.Row
    35  		typ  sql.Type
    36  		path string
    37  		exp  interface{}
    38  	}{
    39  		{row: sql.Row{`null`}, exp: nil},
    40  		{row: sql.Row{`1`}, exp: "1"},
    41  		{row: sql.Row{`[1]`}, exp: `[1]`},
    42  		{row: sql.Row{`{"a": "fjsadflkd"}`}, exp: `{"a": "fjsadflkd"}`},
    43  		{row: sql.Row{`[1, false]`}, exp: `[1, false]`},
    44  		{row: sql.Row{`[1, false]`}, path: "$[0]", typ: types.Int64, exp: int64(1)},
    45  		{row: sql.Row{`[1, false]`}, path: "$[0]", typ: types.Uint64, exp: uint64(1)},
    46  		{row: sql.Row{`[1, false]`}, path: "$[0]", exp: "1"},
    47  		{row: sql.Row{`[1, {"a": 1}]`}, path: "$[1].a", typ: types.Int64, exp: int64(1)},
    48  		{row: sql.Row{`[1, {"a": 1}]`}, path: "$[1]", typ: types.JSON, exp: types.MustJSON(`{"a": 1}`)},
    49  	}
    50  
    51  	for _, tt := range tests {
    52  		args := make([]string, len(tt.row))
    53  		for i, a := range tt.row {
    54  			args[i] = a.(string)
    55  		}
    56  		if tt.path == "" {
    57  			tt.path = "$"
    58  		}
    59  		args = append(args, tt.path)
    60  		if tt.typ != nil {
    61  			args = append(args, tt.typ.String())
    62  		}
    63  		t.Run(strings.Join(args, ", "), func(t *testing.T) {
    64  			args := []sql.Expression{expression.NewGetField(0, types.JSON, "", true)}
    65  			if tt.path != "" {
    66  				args = append(args, expression.NewLiteral(tt.path, types.Text))
    67  			}
    68  			if tt.typ != nil {
    69  				args = append(args, expression.NewLiteral(tt.typ.Zero(), tt.typ))
    70  			}
    71  			f, _ := NewJsonValue(args...)
    72  			require := require.New(t)
    73  			// any error case will result in output of 'false' value
    74  			result, _ := f.Eval(sql.NewEmptyContext(), tt.row)
    75  			require.Equal(tt.exp, result)
    76  		})
    77  	}
    78  }