github.com/dolthub/go-mysql-server@v0.18.0/sql/analyzer/process_test.go (about)

     1  // Copyright 2020-2021 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 analyzer
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  
    22  	"github.com/dolthub/go-mysql-server/memory"
    23  	"github.com/dolthub/go-mysql-server/sql"
    24  	"github.com/dolthub/go-mysql-server/sql/plan"
    25  )
    26  
    27  func TestTrackProcessSubquery(t *testing.T) {
    28  	require := require.New(t)
    29  	rule := getRuleFrom(OnceAfterAll, TrackProcessId)
    30  	a := NewDefault(sql.NewDatabaseProvider())
    31  
    32  	db := memory.NewDatabase("db")
    33  	pro := memory.NewDBProvider(db)
    34  	ctx := newContext(pro)
    35  
    36  	node := plan.NewProject(
    37  		nil,
    38  		plan.NewSubqueryAlias("f", "",
    39  			plan.NewQueryProcess(
    40  				plan.NewResolvedTable(memory.NewTable(db, "foo", sql.PrimaryKeySchema{}, nil), nil, nil),
    41  				nil,
    42  			),
    43  		),
    44  	)
    45  
    46  	result, _, err := rule.Apply(ctx, a, node, nil, DefaultRuleSelector)
    47  	require.NoError(err)
    48  
    49  	expectedChild := plan.NewProject(
    50  		nil,
    51  		plan.NewSubqueryAlias("f", "",
    52  			plan.NewResolvedTable(memory.NewTable(db, "foo", sql.PrimaryKeySchema{}, nil), nil, nil),
    53  		),
    54  	)
    55  
    56  	proc, ok := result.(*plan.QueryProcess)
    57  	require.True(ok)
    58  	require.Equal(expectedChild, proc.Child())
    59  }
    60  
    61  // wrapper around sql.Table to make it not indexable
    62  type table struct {
    63  	sql.Table
    64  }
    65  
    66  var _ sql.PartitionCounter = (*table)(nil)
    67  
    68  func (t *table) PartitionCount(ctx *sql.Context) (int64, error) {
    69  	return t.Table.(sql.PartitionCounter).PartitionCount(ctx)
    70  }