mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
/*
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Copyright 2014 CoreOS, Inc.
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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 idutil
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import (
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"testing"
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"time"
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)
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func TestNewGenerator(t *testing.T) {
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g := NewGenerator(0x12, time.Unix(0, 0).Add(0x3456*time.Millisecond))
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id := g.Next()
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wid := uint64(0x1200000034560001)
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if id != wid {
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t.Errorf("id = %x, want %x", id, wid)
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}
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}
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func TestNewGeneratorUnique(t *testing.T) {
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g := NewGenerator(0, time.Time{})
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id := g.Next()
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// different server generates different ID
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g1 := NewGenerator(1, time.Time{})
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if gid := g1.Next(); id == gid {
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t.Errorf("generate the same id %x using different server ID", id)
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}
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// restarted server generates different ID
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g2 := NewGenerator(0, time.Now())
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if gid := g2.Next(); id == gid {
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t.Errorf("generate the same id %x after restart", id)
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}
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}
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func TestNext(t *testing.T) {
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g := NewGenerator(0x12, time.Unix(0, 0).Add(0x3456*time.Millisecond))
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wid := uint64(0x1200000034560001)
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for i := 0; i < 1000; i++ {
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id := g.Next()
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if id != wid+uint64(i) {
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t.Errorf("id = %x, want %x", id, wid+uint64(i))
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}
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}
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}
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