infoschema_reader_internal_test.go

// Copyright 2023 PingCAP, 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 executor

import (
	"testing"

	"github.com/pingcap/tidb/parser/model"
	"github.com/pingcap/tidb/types"
	"github.com/stretchr/testify/require"
)

func TestSetDataFromCheckConstraints(t *testing.T) {
	mt := memtableRetriever{}
	sctx := defaultCtx()
	dbs := []*model.DBInfo{
		{
			ID:   1,
			Name: model.NewCIStr("test"),
			Tables: []*model.TableInfo{
				{
					ID:   1,
					Name: model.NewCIStr("t1"),
				},
				{
					ID:   2,
					Name: model.NewCIStr("t2"),
					Constraints: []*model.ConstraintInfo{
						{
							Name:       model.NewCIStr("t2_c1"),
							Table:      model.NewCIStr("t2"),
							ExprString: "id<10",
							State:      model.StatePublic,
						},
					},
				},
				{
					ID:   3,
					Name: model.NewCIStr("t3"),
					Constraints: []*model.ConstraintInfo{
						{
							Name:       model.NewCIStr("t3_c1"),
							Table:      model.NewCIStr("t3"),
							ExprString: "id<10",
							State:      model.StateDeleteOnly,
						},
					},
				},
			},
		},
	}
	err := mt.setDataFromCheckConstraints(sctx, dbs)
	require.NoError(t, err)

	require.Equal(t, 1, len(mt.rows))    // 1 row
	require.Equal(t, 4, len(mt.rows[0])) // 4 columns
	require.Equal(t, types.NewStringDatum("def"), mt.rows[0][0])
	require.Equal(t, types.NewStringDatum("test"), mt.rows[0][1])
	require.Equal(t, types.NewStringDatum("t2_c1"), mt.rows[0][2])
	require.Equal(t, types.NewStringDatum("(id<10)"), mt.rows[0][3])
}