mirror of
https://github.com/hanzoai/tasks.git
synced 2026-10-04 02:04:03 +00:00
Yimin ChenandGitHub
13c0be50e8
## What changed? FullJitter returns [0, input). Fix the test which verified the result in range of [0, 2*input). Also simplify the FullJitter implementation. ## Why? It was confusing what the range of the result should be. ## How did you test it? Unit test ## Potential risks No ## Is hotfix candidate? No
111 lines
3.2 KiB
Go
111 lines
3.2 KiB
Go
// The MIT License
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//
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// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
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//
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// Copyright (c) 2020 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package backoff
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import (
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"math/rand"
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"testing"
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"time"
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"github.com/stretchr/testify/suite"
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)
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type (
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jitterSuite struct {
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suite.Suite
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}
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)
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func TestJitterSuite(t *testing.T) {
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s := new(jitterSuite)
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suite.Run(t, s)
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}
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func (s *jitterSuite) SetupSuite() {
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}
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func (s *jitterSuite) TestJitter_Int64() {
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input := int64(1048576)
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coefficient := float64(0.25)
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lowerBound := int64(float64(input) * (1 - coefficient))
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upperBound := int64(float64(input) * (1 + coefficient))
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for i := 0; i < 1048576; i++ {
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result := Jitter(input, coefficient)
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s.True(result >= lowerBound)
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s.True(result < upperBound)
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result = FullJitter(input)
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s.True(result >= 0)
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s.True(result < input)
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}
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}
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func (s *jitterSuite) TestJitter_Float64() {
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input := float64(1048576.1048576)
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coefficient := float64(0.16)
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lowerBound := float64(input) * (1 - coefficient)
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upperBound := float64(input) * (1 + coefficient)
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for i := 0; i < 1048576; i++ {
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result := Jitter(input, coefficient)
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s.True(result >= lowerBound)
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s.True(result < upperBound)
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result = FullJitter(input)
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s.True(result >= 0)
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s.True(result < input)
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}
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}
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func (s *jitterSuite) TestJitter_Duration() {
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input := time.Duration(1099511627776)
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coefficient := float64(0.1)
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lowerBound := time.Duration(int64(float64(input.Nanoseconds()) * (1 - coefficient)))
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upperBound := time.Duration(int64(float64(input.Nanoseconds()) * (1 + coefficient)))
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for i := 0; i < 1048576; i++ {
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result := Jitter(input, coefficient)
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s.True(result >= lowerBound)
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s.True(result < upperBound)
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result = FullJitter(input)
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s.True(result >= 0)
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s.True(result < input)
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}
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}
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func (s *jitterSuite) TestJitter_InputZeroValue() {
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s.Zero(Jitter(time.Duration(0), rand.Float64()))
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s.Zero(Jitter(int64(0), rand.Float64()))
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s.Zero(Jitter(float64(0), rand.Float64()))
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}
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func (s *jitterSuite) TestJitter_CoeffientZeroValue() {
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s.Equal(time.Duration(1), Jitter(time.Duration(1), 0))
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s.Equal(int64(1), Jitter(int64(1), 0))
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s.Equal(float64(1), Jitter(float64(1), 0))
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}
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