ceph/src/arrow/go/arrow/datatype_extension_test.go

   1 // Licensed to the Apache Software Foundation (ASF) under one
   2 // or more contributor license agreements.  See the NOTICE file
   3 // distributed with this work for additional information
   4 // regarding copyright ownership.  The ASF licenses this file
   5 // to you under the Apache License, Version 2.0 (the
   6 // "License"); you may not use this file except in compliance
   7 // with the License.  You may obtain a copy of the License at
   8 //
   9 // http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing, software
  12 // distributed under the License is distributed on an "AS IS" BASIS,
  13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 // See the License for the specific language governing permissions and
  15 // limitations under the License.
  16
  17 package arrow_test
  18
  19 import (
  20         "reflect"
  21         "testing"
  22
  23         "github.com/apache/arrow/go/v6/arrow"
  24         "github.com/apache/arrow/go/v6/arrow/internal/testing/types"
  25         "github.com/stretchr/testify/assert"
  26         "github.com/stretchr/testify/suite"
  27 )
  28
  29 type BadExtensionType struct{}
  30
  31 func (BadExtensionType) ID() arrow.Type                           { return arrow.EXTENSION }
  32 func (BadExtensionType) ArrayType() reflect.Type                  { return nil }
  33 func (BadExtensionType) Name() string                             { return "bad" }
  34 func (BadExtensionType) StorageType() arrow.DataType              { return arrow.Null }
  35 func (BadExtensionType) ExtensionEquals(arrow.ExtensionType) bool { return false }
  36 func (BadExtensionType) ExtensionName() string                    { return "bad" }
  37 func (BadExtensionType) Serialize() string                        { return "" }
  38 func (BadExtensionType) Deserialize(_ arrow.DataType, _ string) (arrow.ExtensionType, error) {
  39         return nil, nil
  40 }
  41
  42 func TestMustEmbedBase(t *testing.T) {
  43         var ext interface{} = &BadExtensionType{}
  44         assert.Panics(t, func() {
  45                 var _ arrow.ExtensionType = ext.(arrow.ExtensionType)
  46         })
  47 }
  48
  49 type ExtensionTypeTestSuite struct {
  50         suite.Suite
  51 }
  52
  53 func (e *ExtensionTypeTestSuite) SetupTest() {
  54         e.NoError(arrow.RegisterExtensionType(types.NewUUIDType()))
  55 }
  56
  57 func (e *ExtensionTypeTestSuite) TearDownTest() {
  58         if arrow.GetExtensionType("uuid") != nil {
  59                 e.NoError(arrow.UnregisterExtensionType("uuid"))
  60         }
  61 }
  62
  63 func (e *ExtensionTypeTestSuite) TestExtensionType() {
  64         e.Nil(arrow.GetExtensionType("uuid-unknown"))
  65         e.NotNil(arrow.GetExtensionType("uuid"))
  66
  67         e.Error(arrow.RegisterExtensionType(types.NewUUIDType()))
  68         e.Error(arrow.UnregisterExtensionType("uuid-unknown"))
  69
  70         typ := types.NewUUIDType()
  71         e.Implements((*arrow.ExtensionType)(nil), typ)
  72         e.Equal(arrow.EXTENSION, typ.ID())
  73         e.Equal("extension", typ.Name())
  74
  75         serialized := typ.Serialize()
  76         deserialized, err := typ.Deserialize(&arrow.FixedSizeBinaryType{ByteWidth: 16}, serialized)
  77         e.NoError(err)
  78
  79         e.True(arrow.TypeEqual(deserialized.StorageType(), &arrow.FixedSizeBinaryType{ByteWidth: 16}))
  80         e.True(arrow.TypeEqual(deserialized, typ))
  81         e.False(arrow.TypeEqual(deserialized, &arrow.FixedSizeBinaryType{ByteWidth: 16}))
  82 }
  83
  84 func TestExtensionTypes(t *testing.T) {
  85         suite.Run(t, new(ExtensionTypeTestSuite))
  86 }