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

     1  // Copyright 2022 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  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  
    22  	"github.com/dolthub/go-mysql-server/sql"
    23  	"github.com/dolthub/go-mysql-server/sql/expression"
    24  	"github.com/dolthub/go-mysql-server/sql/types"
    25  )
    26  
    27  func TestJSONArray(t *testing.T) {
    28  	f0, err := NewJSONArray()
    29  	require.NoError(t, err)
    30  
    31  	f1, err := NewJSONArray(
    32  		expression.NewGetField(0, types.LongText, "arg1", false),
    33  	)
    34  	require.NoError(t, err)
    35  
    36  	f2, err := NewJSONArray(
    37  		expression.NewGetField(0, types.LongText, "arg1", false),
    38  		expression.NewGetField(1, types.LongText, "arg2", false),
    39  	)
    40  	require.NoError(t, err)
    41  
    42  	f3, err := NewJSONArray(
    43  		expression.NewGetField(0, types.LongText, "arg1", false),
    44  		expression.NewGetField(1, types.LongText, "arg2", false),
    45  		expression.NewGetField(2, types.LongText, "arg3", false),
    46  	)
    47  	require.NoError(t, err)
    48  
    49  	f4, err := NewJSONArray(
    50  		expression.NewGetField(0, types.LongText, "arg1", false),
    51  		expression.NewGetField(1, types.LongText, "arg2", false),
    52  		expression.NewGetField(2, types.LongText, "arg3", false),
    53  		expression.NewGetField(3, types.LongText, "arg4", false),
    54  	)
    55  	require.NoError(t, err)
    56  
    57  	testCases := []struct {
    58  		f        sql.Expression
    59  		row      sql.Row
    60  		expected interface{}
    61  		err      error
    62  	}{
    63  		{f0, sql.Row{}, types.JSONDocument{Val: []interface{}{}}, nil},
    64  		{f1, sql.Row{[]interface{}{1, 2}}, types.JSONDocument{Val: []interface{}{[]interface{}{1, 2}}}, nil},
    65  		{f2, sql.Row{[]interface{}{1, 2}, "second item"}, types.JSONDocument{Val: []interface{}{[]interface{}{1, 2}, "second item"}}, nil},
    66  		{f2, sql.Row{[]interface{}{1, 2}, map[string]interface{}{"name": "x"}}, types.JSONDocument{Val: []interface{}{[]interface{}{1, 2}, map[string]interface{}{"name": "x"}}}, nil},
    67  		{f2, sql.Row{map[string]interface{}{"name": "x"}, map[string]interface{}{"id": 47}}, types.JSONDocument{Val: []interface{}{map[string]interface{}{"name": "x"}, map[string]interface{}{"id": 47}}}, nil},
    68  		{f3, sql.Row{"foo", -44, "b"}, types.JSONDocument{Val: []interface{}{"foo", -44, "b"}}, nil},
    69  		{f4, sql.Row{100, true, nil, "four"}, types.JSONDocument{Val: []interface{}{100, true, nil, "four"}}, nil},
    70  		{f4, sql.Row{100.44, `{"name":null,"id":{"number":998,"type":"A"}}`, nil, `four`},
    71  			types.JSONDocument{Val: []interface{}{100.44, "{\"name\":null,\"id\":{\"number\":998,\"type\":\"A\"}}", nil, "four"}}, nil},
    72  	}
    73  
    74  	for _, tt := range testCases {
    75  		t.Run(tt.f.String(), func(t *testing.T) {
    76  			require := require.New(t)
    77  			result, err := tt.f.Eval(sql.NewEmptyContext(), tt.row)
    78  			if tt.err == nil {
    79  				require.NoError(err)
    80  			} else {
    81  				require.Equal(err.Error(), tt.err.Error())
    82  			}
    83  
    84  			require.Equal(tt.expected, result)
    85  		})
    86  	}
    87  }