53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package allocator
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import (
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"math/big"
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"testing"
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)
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func TestBitCount(t *testing.T) {
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for i, c := range bitCounts {
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actual := 0
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for j := 0; j < 8; j++ {
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if ((1 << uint(j)) & i) != 0 {
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actual++
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}
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}
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if actual != int(c) {
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t.Errorf("%d should have %d bits but recorded as %d", i, actual, c)
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}
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}
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}
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func TestCountBits(t *testing.T) {
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tests := []struct {
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n *big.Int
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expected int
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}{
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{n: big.NewInt(int64(0)), expected: 0},
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{n: big.NewInt(int64(0xffffffffff)), expected: 40},
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}
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for _, test := range tests {
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actual := countBits(test.n)
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if test.expected != actual {
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t.Errorf("%d should have %d bits but recorded as %d", test.n, test.expected, actual)
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}
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}
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}
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