vitess.io/vitess@v0.16.2/go/vt/vtgate/semantics/semantic_state_test.go (about)

     1  /*
     2  Copyright 2022 The Vitess Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package semantics
    18  
    19  import (
    20  	"fmt"
    21  	"testing"
    22  
    23  	"github.com/stretchr/testify/assert"
    24  	"github.com/stretchr/testify/require"
    25  
    26  	querypb "vitess.io/vitess/go/vt/proto/query"
    27  	"vitess.io/vitess/go/vt/sqlparser"
    28  	"vitess.io/vitess/go/vt/vtgate/vindexes"
    29  )
    30  
    31  func TestBindingAndExprEquality(t *testing.T) {
    32  	tests := []struct {
    33  		expressions string
    34  		equal       bool
    35  	}{{
    36  		expressions: "t1_id+1, t1.t1_id+1",
    37  		equal:       true,
    38  	}, {
    39  		expressions: "t2_id+1, t1_id+1",
    40  		equal:       false,
    41  	}, {
    42  		expressions: "(t1_id+1)+1, t1.t1_id+1+1",
    43  		equal:       true,
    44  	}}
    45  
    46  	for _, test := range tests {
    47  		t.Run(test.expressions, func(t *testing.T) {
    48  			parse, err := sqlparser.Parse(fmt.Sprintf("select %s from t1, t2", test.expressions))
    49  			require.NoError(t, err)
    50  			st, err := Analyze(parse, "db", fakeSchemaInfoTest())
    51  			require.NoError(t, err)
    52  			exprs := parse.(*sqlparser.Select).SelectExprs
    53  			a := exprs[0].(*sqlparser.AliasedExpr).Expr
    54  			b := exprs[1].(*sqlparser.AliasedExpr).Expr
    55  			assert.Equal(t, st.EqualsExpr(a, b), test.equal)
    56  		})
    57  	}
    58  }
    59  
    60  func fakeSchemaInfoTest() *FakeSI {
    61  	cols1 := []vindexes.Column{{
    62  		Name: sqlparser.NewIdentifierCI("t1_id"),
    63  		Type: querypb.Type_INT64,
    64  	}}
    65  	cols2 := []vindexes.Column{{
    66  		Name: sqlparser.NewIdentifierCI("t2_id"),
    67  		Type: querypb.Type_INT64,
    68  	}}
    69  
    70  	si := &FakeSI{
    71  		Tables: map[string]*vindexes.Table{
    72  			"t1": {Name: sqlparser.NewIdentifierCS("t1"), Columns: cols1, ColumnListAuthoritative: true, Keyspace: ks2},
    73  			"t2": {Name: sqlparser.NewIdentifierCS("t2"), Columns: cols2, ColumnListAuthoritative: true, Keyspace: ks3},
    74  		},
    75  	}
    76  	return si
    77  }