vitess.io/vitess@v0.16.2/go/vt/vtgate/vindexes/hash_test.go (about)

     1  /*
     2  Copyright 2019 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 vindexes
    18  
    19  import (
    20  	"context"
    21  	"reflect"
    22  	"testing"
    23  
    24  	"github.com/stretchr/testify/assert"
    25  	"github.com/stretchr/testify/require"
    26  
    27  	"vitess.io/vitess/go/sqltypes"
    28  	"vitess.io/vitess/go/vt/key"
    29  )
    30  
    31  var hash SingleColumn
    32  
    33  func init() {
    34  	hv, err := CreateVindex("hash", "nn", map[string]string{"Table": "t", "Column": "c"})
    35  	if err != nil {
    36  		panic(err)
    37  	}
    38  	hash = hv.(SingleColumn)
    39  }
    40  
    41  func TestHashInfo(t *testing.T) {
    42  	assert.Equal(t, 1, hash.Cost())
    43  	assert.Equal(t, "nn", hash.String())
    44  	assert.True(t, hash.IsUnique())
    45  	assert.False(t, hash.NeedsVCursor())
    46  }
    47  
    48  func TestHashMap(t *testing.T) {
    49  	got, err := hash.Map(context.Background(), nil, []sqltypes.Value{
    50  		sqltypes.NewInt64(1),
    51  		sqltypes.NewInt64(2),
    52  		sqltypes.NewInt64(3),
    53  		sqltypes.NULL,
    54  		sqltypes.NewInt64(4),
    55  		sqltypes.NewInt64(5),
    56  		sqltypes.NewInt64(6),
    57  		sqltypes.NewInt64(0),
    58  		sqltypes.NewInt64(-1),
    59  		sqltypes.NewUint64(18446744073709551615), // 2^64 - 1
    60  		sqltypes.NewInt64(9223372036854775807),   // 2^63 - 1
    61  		sqltypes.NewUint64(9223372036854775807),  // 2^63 - 1
    62  		sqltypes.NewInt64(-9223372036854775808),  // - 2^63
    63  	})
    64  	require.NoError(t, err)
    65  	want := []key.Destination{
    66  		key.DestinationKeyspaceID([]byte("\x16k@\xb4J\xbaK\xd6")),
    67  		key.DestinationKeyspaceID([]byte("\x06\xe7\xea\"Βp\x8f")),
    68  		key.DestinationKeyspaceID([]byte("N\xb1\x90ɢ\xfa\x16\x9c")),
    69  		key.DestinationNone{},
    70  		key.DestinationKeyspaceID([]byte("\xd2\xfd\x88g\xd5\r-\xfe")),
    71  		key.DestinationKeyspaceID([]byte("p\xbb\x02<\x81\f\xa8z")),
    72  		key.DestinationKeyspaceID([]byte("\xf0\x98H\n\xc4ľq")),
    73  		key.DestinationKeyspaceID([]byte("\x8c\xa6M\xe9\xc1\xb1#\xa7")),
    74  		key.DestinationKeyspaceID([]byte("5UP\xb2\x15\x0e$Q")),
    75  		key.DestinationKeyspaceID([]byte("5UP\xb2\x15\x0e$Q")),
    76  		key.DestinationKeyspaceID([]byte("\xf7}H\xaaݡ\xf1\xbb")),
    77  		key.DestinationKeyspaceID([]byte("\xf7}H\xaaݡ\xf1\xbb")),
    78  		key.DestinationKeyspaceID([]byte("\x95\xf8\xa5\xe5\xdd1\xd9\x00")),
    79  	}
    80  	if !reflect.DeepEqual(got, want) {
    81  		for i, v := range got {
    82  			if v.String() != want[i].String() {
    83  				t.Errorf("Map() %d: %#v, want %#v", i, v, want[i])
    84  			}
    85  		}
    86  	}
    87  }
    88  
    89  func TestHashVerify(t *testing.T) {
    90  	ids := []sqltypes.Value{sqltypes.NewInt64(1), sqltypes.NewInt64(2)}
    91  	ksids := [][]byte{[]byte("\x16k@\xb4J\xbaK\xd6"), []byte("\x16k@\xb4J\xbaK\xd6")}
    92  	got, err := hash.Verify(context.Background(), nil, ids, ksids)
    93  	if err != nil {
    94  		t.Fatal(err)
    95  	}
    96  	want := []bool{true, false}
    97  	if !reflect.DeepEqual(got, want) {
    98  		t.Errorf("binaryMD5.Verify: %v, want %v", got, want)
    99  	}
   100  
   101  	// Failure test
   102  	_, err = hash.Verify(context.Background(), nil, []sqltypes.Value{sqltypes.NewVarBinary("aa")}, [][]byte{nil})
   103  	require.EqualError(t, err, "could not parse value: 'aa'")
   104  }
   105  
   106  func TestHashReverseMap(t *testing.T) {
   107  	got, err := hash.(Reversible).ReverseMap(nil, [][]byte{
   108  		[]byte("\x16k@\xb4J\xbaK\xd6"),
   109  		[]byte("\x06\xe7\xea\"Βp\x8f"),
   110  		[]byte("N\xb1\x90ɢ\xfa\x16\x9c"),
   111  		[]byte("\xd2\xfd\x88g\xd5\r-\xfe"),
   112  		[]byte("p\xbb\x02<\x81\f\xa8z"),
   113  		[]byte("\xf0\x98H\n\xc4ľq"),
   114  		[]byte("\x8c\xa6M\xe9\xc1\xb1#\xa7"),
   115  		[]byte("5UP\xb2\x15\x0e$Q"),
   116  		[]byte("5UP\xb2\x15\x0e$Q"),
   117  		[]byte("\xf7}H\xaaݡ\xf1\xbb"),
   118  		[]byte("\xf7}H\xaaݡ\xf1\xbb"),
   119  		[]byte("\x95\xf8\xa5\xe5\xdd1\xd9\x00"),
   120  	})
   121  	require.NoError(t, err)
   122  	neg1 := int64(-1)
   123  	negmax := int64(-9223372036854775808)
   124  	want := []sqltypes.Value{
   125  		sqltypes.NewUint64(uint64(1)),
   126  		sqltypes.NewUint64(2),
   127  		sqltypes.NewUint64(3),
   128  		sqltypes.NewUint64(4),
   129  		sqltypes.NewUint64(5),
   130  		sqltypes.NewUint64(6),
   131  		sqltypes.NewUint64(0),
   132  		sqltypes.NewUint64(uint64(neg1)),
   133  		sqltypes.NewUint64(18446744073709551615), // 2^64 - 1
   134  		sqltypes.NewUint64(9223372036854775807),  // 2^63 - 1
   135  		sqltypes.NewUint64(9223372036854775807),  // 2^63 - 1
   136  		sqltypes.NewUint64(uint64(negmax)),       // - 2^63
   137  	}
   138  	if !reflect.DeepEqual(got, want) {
   139  		t.Errorf("ReverseMap(): %v, want %v", got, want)
   140  	}
   141  }
   142  
   143  func TestHashReverseMapNeg(t *testing.T) {
   144  	_, err := hash.(Reversible).ReverseMap(nil, [][]byte{[]byte("\x16k@\xb4J\xbaK\xd6\x16k@\xb4J\xbaK\xd6")})
   145  	want := "invalid keyspace id: 166b40b44aba4bd6166b40b44aba4bd6"
   146  	if err.Error() != want {
   147  		t.Error(err)
   148  	}
   149  }