github.com/datastax/go-cassandra-native-protocol@v0.0.0-20220706104457-5e8aad05cf90/datatype/custom_test.go (about)

     1  // Copyright 2020 DataStax
     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 datatype
    16  
    17  import (
    18  	"bytes"
    19  	"errors"
    20  	"fmt"
    21  	"testing"
    22  
    23  	"github.com/stretchr/testify/assert"
    24  
    25  	"github.com/datastax/go-cassandra-native-protocol/primitive"
    26  )
    27  
    28  func TestCustomType(t *testing.T) {
    29  	customType := NewCustom("foo.bar.qix")
    30  	assert.Equal(t, primitive.DataTypeCodeCustom, customType.Code())
    31  	assert.Equal(t, "foo.bar.qix", customType.ClassName)
    32  }
    33  
    34  func TestWriteCustomType(t *testing.T) {
    35  	for _, version := range primitive.SupportedProtocolVersions() {
    36  		t.Run(version.String(), func(t *testing.T) {
    37  			tests := []struct {
    38  				name     string
    39  				input    DataType
    40  				expected []byte
    41  				err      error
    42  			}{
    43  				{"simple custom", NewCustom("hello"), []byte{0, 5, byte('h'), byte('e'), byte('l'), byte('l'), byte('o')}, nil},
    44  				{"nil custom", nil, nil, errors.New("expected *Custom, got <nil>")},
    45  			}
    46  			for _, test := range tests {
    47  				t.Run(test.name, func(t *testing.T) {
    48  					var dest = &bytes.Buffer{}
    49  					var err error
    50  					err = writeCustomType(test.input, dest, version)
    51  					actual := dest.Bytes()
    52  					assert.Equal(t, test.expected, actual)
    53  					assert.Equal(t, test.err, err)
    54  				})
    55  			}
    56  		})
    57  	}
    58  }
    59  
    60  func TestLengthOfCustomType(t *testing.T) {
    61  	for _, version := range primitive.SupportedProtocolVersions() {
    62  		t.Run(version.String(), func(t *testing.T) {
    63  			tests := []struct {
    64  				name     string
    65  				input    DataType
    66  				expected int
    67  				err      error
    68  			}{
    69  				{"simple custom", NewCustom("hello"), primitive.LengthOfString("hello"), nil},
    70  				{"nil custom", nil, -1, errors.New("expected *Custom, got <nil>")},
    71  			}
    72  			for _, test := range tests {
    73  				t.Run(test.name, func(t *testing.T) {
    74  					var actual int
    75  					var err error
    76  					actual, err = lengthOfCustomType(test.input, version)
    77  					assert.Equal(t, test.expected, actual)
    78  					assert.Equal(t, test.err, err)
    79  				})
    80  			}
    81  		})
    82  	}
    83  }
    84  
    85  func TestReadCustomType(t *testing.T) {
    86  	for _, version := range primitive.SupportedProtocolVersions() {
    87  		t.Run(version.String(), func(t *testing.T) {
    88  			tests := []struct {
    89  				name     string
    90  				input    []byte
    91  				expected DataType
    92  				err      error
    93  			}{
    94  				{"simple custom", []byte{0, 5, byte('h'), byte('e'), byte('l'), byte('l'), byte('o')}, NewCustom("hello"), nil},
    95  				{
    96  					"cannot read custom",
    97  					[]byte{},
    98  					nil,
    99  					fmt.Errorf("cannot read custom type class name: %w",
   100  						fmt.Errorf("cannot read [string] length: %w",
   101  							fmt.Errorf("cannot read [short]: %w",
   102  								errors.New("EOF")))),
   103  				},
   104  			}
   105  			for _, test := range tests {
   106  				t.Run(test.name, func(t *testing.T) {
   107  					var source = bytes.NewBuffer(test.input)
   108  					var actual DataType
   109  					var err error
   110  					actual, err = readCustomType(source, version)
   111  					assert.Equal(t, test.expected, actual)
   112  					assert.Equal(t, test.err, err)
   113  				})
   114  			}
   115  		})
   116  	}
   117  }
   118  
   119  func TestCustomTypeDeepCopy(t *testing.T) {
   120  	ct := NewCustom("foo.bar.qix")
   121  	clonedCustomType := ct.DeepCopy()
   122  	assert.Equal(t, ct, clonedCustomType)
   123  	clonedCustomType.ClassName = "123"
   124  	assert.Equal(t, "123", clonedCustomType.ClassName)
   125  	assert.Equal(t, "foo.bar.qix", ct.ClassName)
   126  }