mirror of
https://github.com/cubefs/cubefs.git
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35 lines
1.0 KiB
Go
35 lines
1.0 KiB
Go
// Copyright 2023 The CubeFS Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// permissions and limitations under the License.
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package iputil_test
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import (
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"net"
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"testing"
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"github.com/cubefs/cubefs/util/iputil"
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"github.com/stretchr/testify/require"
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)
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// from iputil.GetDistance
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func commonPrefixLen(first net.IP, second net.IP) int {
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return (iputil.GetDistance(first, second) - iputil.DEFAULT_MAX_DISTANCE) * -1
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}
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func TestCommonPrefixLength(t *testing.T) {
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firstV6 := net.ParseIP("fe80::1")
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secondV6 := net.ParseIP("fe80::2")
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require.Equal(t, 64, commonPrefixLen(firstV6, secondV6))
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}
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