// Copyright 2024 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 exec_test

import (
	"testing"

	"github.com/pingcap/tidb/pkg/parser/model"
	"github.com/pingcap/tidb/pkg/sessionctx"
	"github.com/pingcap/tidb/pkg/statistics/handle/autoanalyze/exec"
	"github.com/pingcap/tidb/pkg/testkit"
	"github.com/stretchr/testify/require"
)

func TestExecAutoAnalyzes(t *testing.T) {
	store, dom := testkit.CreateMockStoreAndDomain(t)
	tk := testkit.NewTestKit(t, store)
	tk.MustExec("use test")

	tk.MustExec("create table t (a int, b int, index idx(a))")
	tk.MustExec("insert into t values (1, 1), (2, 2), (3, 3)")

	se := tk.Session()
	sctx := se.(sessionctx.Context)
	handle := dom.StatsHandle()

	exec.AutoAnalyze(
		sctx,
		handle,
		dom.SysProcTracker(),
		2, "analyze table %n", "t",
	)

	// Check the result of analyze.
	is := dom.InfoSchema()
	tbl, err := is.TableByName(model.NewCIStr("test"), model.NewCIStr("t"))
	require.NoError(t, err)
	tblStats := handle.GetTableStats(tbl.Meta())
	require.Equal(t, int64(3), tblStats.RealtimeCount)
}