vitess.io/vitess@v0.16.2/go/vt/vtgate/engine/projection_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 engine
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  	"testing"
    23  
    24  	"github.com/stretchr/testify/assert"
    25  	"github.com/stretchr/testify/require"
    26  
    27  	"vitess.io/vitess/go/sqltypes"
    28  	querypb "vitess.io/vitess/go/vt/proto/query"
    29  	"vitess.io/vitess/go/vt/sqlparser"
    30  	"vitess.io/vitess/go/vt/vtgate/evalengine"
    31  )
    32  
    33  func TestMultiply(t *testing.T) {
    34  	expr := &sqlparser.BinaryExpr{
    35  		Operator: sqlparser.MultOp,
    36  		Left:     &sqlparser.Offset{V: 0},
    37  		Right:    &sqlparser.Offset{V: 1},
    38  	}
    39  	evalExpr, err := evalengine.Translate(expr, nil)
    40  	require.NoError(t, err)
    41  	fp := &fakePrimitive{
    42  		results: []*sqltypes.Result{sqltypes.MakeTestResult(
    43  			sqltypes.MakeTestFields("a|b", "uint64|uint64"),
    44  			"3|2",
    45  			"1|0",
    46  			"1|2",
    47  		)},
    48  	}
    49  	proj := &Projection{
    50  		Cols:       []string{"apa"},
    51  		Exprs:      []evalengine.Expr{evalExpr},
    52  		Input:      fp,
    53  		noTxNeeded: noTxNeeded{},
    54  	}
    55  	qr, err := proj.TryExecute(context.Background(), &noopVCursor{}, map[string]*querypb.BindVariable{}, false)
    56  	require.NoError(t, err)
    57  	assert.Equal(t, "[[UINT64(6)] [UINT64(0)] [UINT64(2)]]", fmt.Sprintf("%v", qr.Rows))
    58  
    59  	fp = &fakePrimitive{
    60  		results: []*sqltypes.Result{sqltypes.MakeTestResult(
    61  			sqltypes.MakeTestFields("a|b", "uint64|uint64"),
    62  			"3|2",
    63  			"1|0",
    64  			"1|2",
    65  		)},
    66  	}
    67  	proj.Input = fp
    68  	qr, err = wrapStreamExecute(proj, &noopVCursor{}, nil, true)
    69  	require.NoError(t, err)
    70  	assert.Equal(t, "[[UINT64(6)] [UINT64(0)] [UINT64(2)]]", fmt.Sprintf("%v", qr.Rows))
    71  }
    72  
    73  func TestEmptyInput(t *testing.T) {
    74  	expr := &sqlparser.BinaryExpr{
    75  		Operator: sqlparser.MultOp,
    76  		Left:     &sqlparser.Offset{V: 0},
    77  		Right:    &sqlparser.Offset{V: 1},
    78  	}
    79  	evalExpr, err := evalengine.Translate(expr, nil)
    80  	require.NoError(t, err)
    81  	fp := &fakePrimitive{
    82  		results: []*sqltypes.Result{sqltypes.MakeTestResult(sqltypes.MakeTestFields("a|b", "uint64|uint64"))},
    83  	}
    84  	proj := &Projection{
    85  		Cols:       []string{"count(*)"},
    86  		Exprs:      []evalengine.Expr{evalExpr},
    87  		Input:      fp,
    88  		noTxNeeded: noTxNeeded{},
    89  	}
    90  	qr, err := proj.TryExecute(context.Background(), &noopVCursor{}, map[string]*querypb.BindVariable{}, false)
    91  	require.NoError(t, err)
    92  	assert.Equal(t, "[]", fmt.Sprintf("%v", qr.Rows))
    93  
    94  	//fp = &fakePrimitive{
    95  	//	results: []*sqltypes.Result{sqltypes.MakeTestResult(
    96  	//		sqltypes.MakeTestFields("a|b", "uint64|uint64"),
    97  	//		"3|2",
    98  	//		"1|0",
    99  	//		"1|2",
   100  	//	)},
   101  	//}
   102  	//proj.Input = fp
   103  	//qr, err = wrapStreamExecute(proj, newNoopVCursor(context.Background()), nil, true)
   104  	//require.NoError(t, err)
   105  	//assert.Equal(t, "[[UINT64(6)] [UINT64(0)] [UINT64(2)]]", fmt.Sprintf("%v", qr.Rows))
   106  }
   107  
   108  func TestHexAndBinaryArgument(t *testing.T) {
   109  	hexExpr, err := evalengine.Translate(sqlparser.Argument("vtg1"), nil)
   110  	require.NoError(t, err)
   111  	proj := &Projection{
   112  		Cols:       []string{"hex"},
   113  		Exprs:      []evalengine.Expr{hexExpr},
   114  		Input:      &SingleRow{},
   115  		noTxNeeded: noTxNeeded{},
   116  	}
   117  	qr, err := proj.TryExecute(context.Background(), &noopVCursor{}, map[string]*querypb.BindVariable{
   118  		"vtg1": sqltypes.HexNumBindVariable([]byte("0x9")),
   119  	}, false)
   120  	require.NoError(t, err)
   121  	assert.Equal(t, `[[VARBINARY("\t")]]`, fmt.Sprintf("%v", qr.Rows))
   122  }