github.com/datastax/go-cassandra-native-protocol@v0.0.0-20220706104457-5e8aad05cf90/crc/crc24_test.go (about)

     1  // Copyright 2021 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 crc
    16  
    17  import (
    18  	"fmt"
    19  	"testing"
    20  )
    21  
    22  func TestChecksumKoopman(t *testing.T) {
    23  	tests := []struct {
    24  		data uint64
    25  		len  int
    26  		want uint32
    27  	}{
    28  		// zero data
    29  		{0, 0, 8867936},
    30  		{0, 1, 59277},
    31  		{0, 3, 8251255},
    32  		{0, 5, 11185162},
    33  		{0, 8, 9640737},
    34  		// data = Long.MaxValue
    35  		{9223372036854775807, 0, 8867936},
    36  		{9223372036854775807, 1, 1294145},
    37  		{9223372036854775807, 3, 8029951},
    38  		{9223372036854775807, 5, 9326200},
    39  		{9223372036854775807, 8, 5032370},
    40  		// random data
    41  		{131077, 3, 10131737},
    42  		{17181442053, 5, 3672222},
    43  		{34359607301, 5, 14445742},
    44  	}
    45  	for _, tt := range tests {
    46  		t.Run(fmt.Sprintf("data %v len %v", tt.data, tt.len), func(t *testing.T) {
    47  			if got := ChecksumKoopman(tt.data, tt.len); got != tt.want {
    48  				t.Errorf("ChecksumKoopman() = %v, want %v", got, tt.want)
    49  			}
    50  		})
    51  	}
    52  }