github.com/livekit/protocol@v1.16.1-0.20240517185851-47e4c6bba773/utils/timed_version_test.go (about) 1 // Copyright 2023 LiveKit, Inc. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package utils 16 17 import ( 18 "testing" 19 "time" 20 21 "github.com/stretchr/testify/require" 22 ) 23 24 func TestTimedVersion(t *testing.T) { 25 t.Run("timed versions are monotonic and comparable", func(t *testing.T) { 26 gen := NewDefaultTimedVersionGenerator() 27 tv1 := gen.Next() 28 tv2 := gen.Next() 29 tv3 := gen.Next() 30 31 require.True(t, tv3.After(tv1)) 32 require.True(t, tv3.After(tv2)) 33 require.True(t, tv2.After(tv1)) 34 35 tv2.Update(tv3) 36 require.True(t, tv2.After(tv1)) 37 // tv3 and tv2 are equivalent after update 38 require.False(t, tv3.After(tv2)) 39 40 require.Equal(t, 0, tv1.Compare(tv1)) 41 require.Equal(t, -1, tv1.Compare(tv2)) 42 require.Equal(t, 1, tv2.Compare(tv1)) 43 }) 44 45 t.Run("protobuf roundtrip", func(t *testing.T) { 46 gen := NewDefaultTimedVersionGenerator() 47 tv1 := gen.Next() 48 tv2 := TimedVersionFromProto(tv1.ToProto()) 49 require.Equal(t, tv1, tv2) 50 }) 51 52 t.Run("from zero time yields epoch version", func(t *testing.T) { 53 gen := NewDefaultTimedVersionGenerator() 54 tv1 := TimedVersionFromTime(time.Date(0, 0, 0, 0, 0, 0, 0, time.UTC)) 55 tv2 := gen.Next() 56 require.True(t, tv2.After(tv1)) 57 }) 58 59 t.Run("time.Time roundtrip", func(t *testing.T) { 60 ts1 := time.Now().Round(time.Microsecond) 61 tv1 := TimedVersionFromTime(ts1) 62 ts2 := tv1.Time() 63 tv2 := TimedVersionFromTime(ts2) 64 require.Equal(t, ts1, ts2) 65 require.Equal(t, tv1, tv2) 66 }) 67 68 t.Run("timed version from nil is zero", func(t *testing.T) { 69 require.True(t, TimedVersionFromProto(nil).IsZero()) 70 }) 71 }