mirror of
https://github.com/Luzifer/nginx-sso.git
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44 lines
1.2 KiB
Go
44 lines
1.2 KiB
Go
// Copyright 2018 Google LLC
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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 testutil
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import (
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"math/rand"
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"sync"
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"time"
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)
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// NewRand creates a new *rand.Rand seeded with t. The return value is safe for use
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// with multiple goroutines.
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func NewRand(t time.Time) *rand.Rand {
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s := &lockedSource{src: rand.NewSource(t.UnixNano())}
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return rand.New(s)
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}
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// lockedSource makes a rand.Source safe for use by multiple goroutines.
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type lockedSource struct {
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mu sync.Mutex
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src rand.Source
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}
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func (ls *lockedSource) Int63() int64 {
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ls.mu.Lock()
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defer ls.mu.Unlock()
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return ls.src.Int63()
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}
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func (ls *lockedSource) Seed(int64) {
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panic("shouldn't be calling Seed")
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}
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