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https://github.com/featurebasedb/featurebase.git
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0a94f8393f
In addition to adding some tests, this commit moves the `GenerateUint64Slice()` helper function into a new `generator` package so that it can be used in both internal and non-internal tests.
51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
// Copyright 2020 Pilosa Corp.
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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 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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package generator
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import (
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"math/rand"
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"sort"
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)
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// Uint64Slice generates between [0, n) random uint64 numbers between min and max.
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func Uint64Slice(n int, min, max uint64, sorted bool, rand *rand.Rand) []uint64 {
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a := make([]uint64, rand.Intn(n))
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for i := range a {
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a[i] = min + uint64(rand.Int63n(int64(max-min)))
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}
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if sorted {
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sort.Sort(uint64Slice(a))
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}
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return a
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}
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// Uint64SetSlice returns the values in a uint64 set.
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func Uint64SetSlice(m map[uint64]struct{}) []uint64 {
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a := make([]uint64, 0, len(m))
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for v := range m {
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a = append(a, v)
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}
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sort.Sort(uint64Slice(a))
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return a
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}
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// uint64Slice represents a sortable slice of uint64 numbers.
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type uint64Slice []uint64
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func (u uint64Slice) Swap(i, j int) { u[i], u[j] = u[j], u[i] }
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func (u uint64Slice) Len() int { return len(u) }
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func (u uint64Slice) Less(i, j int) bool { return u[i] < u[j] }
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