By truncating time.Time to an int64 nanosecond count, we lose the ability to precisely order timestamps before 1678 or after 2262, but we gain (linux/amd64, Go 1.17.1): name old time/op new time/op delta JobQueuePushPopDone10k-8 2.85ms ± 5% 2.29ms ± 2% -19.80% (p=0.000 n=20+18) JobQueueBump-8 34.0µs ± 1% 29.8µs ± 1% -12.35% (p=0.000 n=19+19) name old alloc/op new alloc/op delta JobQueuePushPopDone10k-8 2.56MB ± 0% 1.76MB ± 0% -31.31% (p=0.000 n=18+13) name old allocs/op new allocs/op delta JobQueuePushPopDone10k-8 23.0 ± 0% 23.0 ± 0% ~ (all equal) Results for BenchmarkJobQueueBump are with the fixed version, which no longer depends on b.N for the amount of work performed. rand.Rand.Intn is cheap at ~10ns per iteration.
420 lines
11 KiB
Go
420 lines
11 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package model
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import (
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"fmt"
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"math/rand"
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"testing"
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"time"
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"github.com/d4l3k/messagediff"
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)
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func TestJobQueue(t *testing.T) {
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// Some random actions
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q := newJobQueue()
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q.Push("f1", 0, time.Time{})
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q.Push("f2", 0, time.Time{})
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q.Push("f3", 0, time.Time{})
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q.Push("f4", 0, time.Time{})
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progress, queued, _ := q.Jobs(1, 100)
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if len(progress) != 0 || len(queued) != 4 {
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t.Fatal("Wrong length", len(progress), len(queued))
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}
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for i := 1; i < 5; i++ {
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n, ok := q.Pop()
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if !ok || n != fmt.Sprintf("f%d", i) {
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t.Fatal("Wrong element")
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}
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 1 || len(queued) != 3 {
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t.Log(progress)
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t.Log(queued)
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t.Fatal("Wrong length")
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}
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q.Done(n)
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 0 || len(queued) != 3 {
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t.Fatal("Wrong length", len(progress), len(queued))
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}
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q.Push(n, 0, time.Time{})
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 0 || len(queued) != 4 {
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t.Fatal("Wrong length")
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}
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q.Done("f5") // Does not exist
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 0 || len(queued) != 4 {
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t.Fatal("Wrong length")
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}
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}
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if len(q.progress) > 0 || len(q.queued) != 4 {
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t.Fatal("Wrong length")
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}
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for i := 4; i > 0; i-- {
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 4-i || len(queued) != i {
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t.Fatal("Wrong length")
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}
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s := fmt.Sprintf("f%d", i)
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q.BringToFront(s)
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 4-i || len(queued) != i {
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t.Fatal("Wrong length")
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}
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n, ok := q.Pop()
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if !ok || n != s {
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t.Fatal("Wrong element")
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}
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 5-i || len(queued) != i-1 {
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t.Fatal("Wrong length")
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}
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q.Done("f5") // Does not exist
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 5-i || len(queued) != i-1 {
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t.Fatal("Wrong length")
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}
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}
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_, ok := q.Pop()
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if len(q.progress) != 4 || ok {
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t.Fatal("Wrong length")
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}
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q.Done("f1")
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q.Done("f2")
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q.Done("f3")
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q.Done("f4")
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q.Done("f5") // Does not exist
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_, ok = q.Pop()
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if len(q.progress) != 0 || ok {
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t.Fatal("Wrong length")
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}
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 0 || len(queued) != 0 {
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t.Fatal("Wrong length")
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}
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q.BringToFront("")
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q.Done("f5") // Does not exist
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progress, queued, _ = q.Jobs(1, 100)
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if len(progress) != 0 || len(queued) != 0 {
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t.Fatal("Wrong length")
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}
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}
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func TestBringToFront(t *testing.T) {
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q := newJobQueue()
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q.Push("f1", 0, time.Time{})
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q.Push("f2", 0, time.Time{})
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q.Push("f3", 0, time.Time{})
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q.Push("f4", 0, time.Time{})
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_, queued, _ := q.Jobs(1, 100)
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if diff, equal := messagediff.PrettyDiff([]string{"f1", "f2", "f3", "f4"}, queued); !equal {
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t.Errorf("Order does not match. Diff:\n%s", diff)
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}
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q.BringToFront("f1") // corner case: does nothing
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_, queued, _ = q.Jobs(1, 100)
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if diff, equal := messagediff.PrettyDiff([]string{"f1", "f2", "f3", "f4"}, queued); !equal {
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t.Errorf("Order does not match. Diff:\n%s", diff)
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}
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q.BringToFront("f3")
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_, queued, _ = q.Jobs(1, 100)
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if diff, equal := messagediff.PrettyDiff([]string{"f3", "f1", "f2", "f4"}, queued); !equal {
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t.Errorf("Order does not match. Diff:\n%s", diff)
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}
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q.BringToFront("f2")
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_, queued, _ = q.Jobs(1, 100)
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if diff, equal := messagediff.PrettyDiff([]string{"f2", "f3", "f1", "f4"}, queued); !equal {
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t.Errorf("Order does not match. Diff:\n%s", diff)
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}
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q.BringToFront("f4") // corner case: last element
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_, queued, _ = q.Jobs(1, 100)
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if diff, equal := messagediff.PrettyDiff([]string{"f4", "f2", "f3", "f1"}, queued); !equal {
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t.Errorf("Order does not match. Diff:\n%s", diff)
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}
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}
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func TestShuffle(t *testing.T) {
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q := newJobQueue()
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q.Push("f1", 0, time.Time{})
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q.Push("f2", 0, time.Time{})
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q.Push("f3", 0, time.Time{})
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q.Push("f4", 0, time.Time{})
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// This test will fail once in eight million times (1 / (4!)^5) :)
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for i := 0; i < 5; i++ {
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q.Shuffle()
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_, queued, _ := q.Jobs(1, 100)
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if l := len(queued); l != 4 {
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t.Fatalf("Weird length %d returned from jobs(1, 100)", l)
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}
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t.Logf("%v", queued)
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if _, equal := messagediff.PrettyDiff([]string{"f1", "f2", "f3", "f4"}, queued); !equal {
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// The queue was shuffled
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return
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}
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}
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t.Error("Queue was not shuffled after five attempts.")
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}
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func TestSortBySize(t *testing.T) {
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q := newJobQueue()
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q.Push("f1", 20, time.Time{})
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q.Push("f2", 40, time.Time{})
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q.Push("f3", 30, time.Time{})
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q.Push("f4", 10, time.Time{})
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q.SortSmallestFirst()
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_, actual, _ := q.Jobs(1, 100)
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if l := len(actual); l != 4 {
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t.Fatalf("Weird length %d returned from jobs(1, 100)", l)
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}
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expected := []string{"f4", "f1", "f3", "f2"}
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if diff, equal := messagediff.PrettyDiff(expected, actual); !equal {
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t.Errorf("SortSmallestFirst() diff:\n%s", diff)
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}
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q.SortLargestFirst()
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_, actual, _ = q.Jobs(1, 100)
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if l := len(actual); l != 4 {
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t.Fatalf("Weird length %d returned from jobs(1, 100)", l)
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}
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expected = []string{"f2", "f3", "f1", "f4"}
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if diff, equal := messagediff.PrettyDiff(expected, actual); !equal {
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t.Errorf("SortLargestFirst() diff:\n%s", diff)
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}
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}
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func TestSortByAge(t *testing.T) {
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q := newJobQueue()
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q.Push("f1", 0, time.Unix(20, 0))
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q.Push("f2", 0, time.Unix(40, 0))
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q.Push("f3", 0, time.Unix(30, 0))
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q.Push("f4", 0, time.Unix(10, 0))
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q.SortOldestFirst()
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_, actual, _ := q.Jobs(1, 100)
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if l := len(actual); l != 4 {
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t.Fatalf("Weird length %d returned from jobs(1, 100)", l)
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}
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expected := []string{"f4", "f1", "f3", "f2"}
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if diff, equal := messagediff.PrettyDiff(expected, actual); !equal {
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t.Errorf("SortOldestFirst() diff:\n%s", diff)
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}
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q.SortNewestFirst()
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_, actual, _ = q.Jobs(1, 100)
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if l := len(actual); l != 4 {
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t.Fatalf("Weird length %d returned from jobs(1, 100)", l)
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}
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expected = []string{"f2", "f3", "f1", "f4"}
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if diff, equal := messagediff.PrettyDiff(expected, actual); !equal {
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t.Errorf("SortNewestFirst() diff:\n%s", diff)
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}
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}
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func BenchmarkJobQueueBump(b *testing.B) {
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files := genFiles(10000)
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q := newJobQueue()
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for _, f := range files {
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q.Push(f.Name, 0, time.Time{})
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}
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rng := rand.New(rand.NewSource(int64(b.N)))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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r := rng.Intn(len(files))
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q.BringToFront(files[r].Name)
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}
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}
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func BenchmarkJobQueuePushPopDone10k(b *testing.B) {
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files := genFiles(10000)
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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q := newJobQueue()
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for _, f := range files {
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q.Push(f.Name, 0, time.Time{})
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}
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for range files {
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n, _ := q.Pop()
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q.Done(n)
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}
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}
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}
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func TestQueuePagination(t *testing.T) {
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q := newJobQueue()
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// Ten random actions
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names := make([]string, 10)
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for i := 0; i < 10; i++ {
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names[i] = fmt.Sprint("f", i)
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q.Push(names[i], 0, time.Time{})
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}
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progress, queued, skip := q.Jobs(1, 100)
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if len(progress) != 0 || len(queued) != 10 || skip != 0 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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}
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progress, queued, skip = q.Jobs(1, 5)
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if len(progress) != 0 || len(queued) != 5 || skip != 0 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(queued, names[:5]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[:5])
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}
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progress, queued, skip = q.Jobs(2, 5)
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if len(progress) != 0 || len(queued) != 5 || skip != 5 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(queued, names[5:]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[5:])
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}
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progress, queued, skip = q.Jobs(2, 7)
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if len(progress) != 0 || len(queued) != 3 || skip != 7 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(queued, names[7:]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[7:])
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}
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progress, queued, skip = q.Jobs(3, 5)
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if len(progress) != 0 || len(queued) != 0 || skip != 10 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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}
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n, ok := q.Pop()
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if !ok || n != names[0] {
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t.Fatal("Wrong element")
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}
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progress, queued, skip = q.Jobs(1, 100)
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if len(progress) != 1 || len(queued) != 9 || skip != 0 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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}
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progress, queued, skip = q.Jobs(1, 5)
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if len(progress) != 1 || len(queued) != 4 || skip != 0 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(progress, names[:1]) {
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t.Errorf("Wrong elements in progress, got %v, expected %v", progress, names[:1])
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} else if !equalStrings(queued, names[1:5]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[1:5])
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}
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progress, queued, skip = q.Jobs(2, 5)
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if len(progress) != 0 || len(queued) != 5 || skip != 5 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(queued, names[5:]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[5:])
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}
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progress, queued, skip = q.Jobs(2, 7)
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if len(progress) != 0 || len(queued) != 3 || skip != 7 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(queued, names[7:]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[7:])
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}
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progress, queued, skip = q.Jobs(3, 5)
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if len(progress) != 0 || len(queued) != 0 || skip != 10 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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}
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for i := 1; i < 8; i++ {
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n, ok := q.Pop()
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if !ok || n != names[i] {
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t.Fatal("Wrong element")
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}
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}
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progress, queued, skip = q.Jobs(1, 100)
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if len(progress) != 8 || len(queued) != 2 || skip != 0 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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}
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progress, queued, skip = q.Jobs(1, 5)
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if len(progress) != 5 || len(queued) != 0 || skip != 0 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(progress, names[:5]) {
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t.Errorf("Wrong elements in progress, got %v, expected %v", progress, names[:5])
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}
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progress, queued, skip = q.Jobs(2, 5)
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if len(progress) != 3 || len(queued) != 2 || skip != 5 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(progress, names[5:8]) {
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t.Errorf("Wrong elements in progress, got %v, expected %v", progress, names[5:8])
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} else if !equalStrings(queued, names[8:]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[8:])
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}
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progress, queued, skip = q.Jobs(2, 7)
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if len(progress) != 1 || len(queued) != 2 || skip != 7 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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} else if !equalStrings(progress, names[7:8]) {
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t.Errorf("Wrong elements in progress, got %v, expected %v", progress, names[7:8])
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} else if !equalStrings(queued, names[8:]) {
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t.Errorf("Wrong elements in queued, got %v, expected %v", queued, names[8:])
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}
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progress, queued, skip = q.Jobs(3, 5)
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if len(progress) != 0 || len(queued) != 0 || skip != 10 {
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t.Error("Wrong length", len(progress), len(queued), 0)
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}
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}
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func equalStrings(first, second []string) bool {
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if len(first) != len(second) {
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return false
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}
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for i := range first {
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if first[i] != second[i] {
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return false
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}
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}
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return true
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}
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