How to use Empty method of signal Package

Best Syzkaller code snippet using signal.Empty

helpers_test.go

Source:helpers_test.go Github

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...542 pod1 := newPod("best-effort-high", defaultPriority, []v1.Container{543 newContainer("best-effort-high", newResourceList("", "", ""), newResourceList("", "", "")),544 }, []v1.Volume{545 newVolume("local-volume", v1.VolumeSource{546 EmptyDir: &v1.EmptyDirVolumeSource{},547 }),548 })549 pod2 := newPod("best-effort-low", defaultPriority, []v1.Container{550 newContainer("best-effort-low", newResourceList("", "", ""), newResourceList("", "", "")),551 }, []v1.Volume{552 newVolume("local-volume", v1.VolumeSource{553 EmptyDir: &v1.EmptyDirVolumeSource{},554 }),555 })556 pod3 := newPod("burstable-high", defaultPriority, []v1.Container{557 newContainer("burstable-high", newResourceList("", "", "100Mi"), newResourceList("", "", "400Mi")),558 }, []v1.Volume{559 newVolume("local-volume", v1.VolumeSource{560 EmptyDir: &v1.EmptyDirVolumeSource{},561 }),562 })563 pod4 := newPod("burstable-low", defaultPriority, []v1.Container{564 newContainer("burstable-low", newResourceList("", "", "100Mi"), newResourceList("", "", "400Mi")),565 }, []v1.Volume{566 newVolume("local-volume", v1.VolumeSource{567 EmptyDir: &v1.EmptyDirVolumeSource{},568 }),569 })570 pod5 := newPod("guaranteed-high", defaultPriority, []v1.Container{571 newContainer("guaranteed-high", newResourceList("", "", "400Mi"), newResourceList("", "", "400Mi")),572 }, []v1.Volume{573 newVolume("local-volume", v1.VolumeSource{574 EmptyDir: &v1.EmptyDirVolumeSource{},575 }),576 })577 pod6 := newPod("guaranteed-low", defaultPriority, []v1.Container{578 newContainer("guaranteed-low", newResourceList("", "", "400Mi"), newResourceList("", "", "400Mi")),579 }, []v1.Volume{580 newVolume("local-volume", v1.VolumeSource{581 EmptyDir: &v1.EmptyDirVolumeSource{},582 }),583 })584 stats := map[*v1.Pod]statsapi.PodStats{585 pod1: newPodDiskStats(pod1, resource.MustParse("50Mi"), resource.MustParse("100Mi"), resource.MustParse("150Mi")), // 300Mi - 0 = 300Mi586 pod2: newPodDiskStats(pod2, resource.MustParse("25Mi"), resource.MustParse("25Mi"), resource.MustParse("50Mi")), // 100Mi - 0 = 100Mi587 pod3: newPodDiskStats(pod3, resource.MustParse("150Mi"), resource.MustParse("150Mi"), resource.MustParse("50Mi")), // 350Mi - 100Mi = 250Mi588 pod4: newPodDiskStats(pod4, resource.MustParse("25Mi"), resource.MustParse("35Mi"), resource.MustParse("50Mi")), // 110Mi - 100Mi = 10Mi589 pod5: newPodDiskStats(pod5, resource.MustParse("225Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 375Mi - 400Mi = -25Mi590 pod6: newPodDiskStats(pod6, resource.MustParse("25Mi"), resource.MustParse("45Mi"), resource.MustParse("50Mi")), // 120Mi - 400Mi = -280Mi591 }592 statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {593 result, found := stats[pod]594 return result, found595 }596 pods := []*v1.Pod{pod1, pod2, pod3, pod4, pod5, pod6}597 orderedBy(disk(statsFn, []fsStatsType{fsStatsRoot, fsStatsLogs, fsStatsLocalVolumeSource}, v1.ResourceEphemeralStorage)).Sort(pods)598 expected := []*v1.Pod{pod1, pod3, pod2, pod4, pod5, pod6}599 for i := range expected {600 if pods[i] != expected[i] {601 t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)602 }603 }604}605// Tests that we correctly ignore disk requests when the local storage feature gate is disabled.606func TestOrderedbyDiskDisableLocalStorage(t *testing.T) {607 defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.LocalStorageCapacityIsolation, false)()608 pod1 := newPod("best-effort-high", defaultPriority, []v1.Container{609 newContainer("best-effort-high", newResourceList("", "", ""), newResourceList("", "", "")),610 }, []v1.Volume{611 newVolume("local-volume", v1.VolumeSource{612 EmptyDir: &v1.EmptyDirVolumeSource{},613 }),614 })615 pod2 := newPod("best-effort-low", defaultPriority, []v1.Container{616 newContainer("best-effort-low", newResourceList("", "", ""), newResourceList("", "", "")),617 }, []v1.Volume{618 newVolume("local-volume", v1.VolumeSource{619 EmptyDir: &v1.EmptyDirVolumeSource{},620 }),621 })622 pod3 := newPod("burstable-high", defaultPriority, []v1.Container{623 newContainer("burstable-high", newResourceList("", "", "100Mi"), newResourceList("", "", "400Mi")),624 }, []v1.Volume{625 newVolume("local-volume", v1.VolumeSource{626 EmptyDir: &v1.EmptyDirVolumeSource{},627 }),628 })629 pod4 := newPod("burstable-low", defaultPriority, []v1.Container{630 newContainer("burstable-low", newResourceList("", "", "100Mi"), newResourceList("", "", "400Mi")),631 }, []v1.Volume{632 newVolume("local-volume", v1.VolumeSource{633 EmptyDir: &v1.EmptyDirVolumeSource{},634 }),635 })636 pod5 := newPod("guaranteed-high", defaultPriority, []v1.Container{637 newContainer("guaranteed-high", newResourceList("", "", "400Mi"), newResourceList("", "", "400Mi")),638 }, []v1.Volume{639 newVolume("local-volume", v1.VolumeSource{640 EmptyDir: &v1.EmptyDirVolumeSource{},641 }),642 })643 pod6 := newPod("guaranteed-low", defaultPriority, []v1.Container{644 newContainer("guaranteed-low", newResourceList("", "", "400Mi"), newResourceList("", "", "400Mi")),645 }, []v1.Volume{646 newVolume("local-volume", v1.VolumeSource{647 EmptyDir: &v1.EmptyDirVolumeSource{},648 }),649 })650 stats := map[*v1.Pod]statsapi.PodStats{651 pod1: newPodDiskStats(pod1, resource.MustParse("50Mi"), resource.MustParse("100Mi"), resource.MustParse("150Mi")), // 300Mi652 pod2: newPodDiskStats(pod2, resource.MustParse("25Mi"), resource.MustParse("25Mi"), resource.MustParse("50Mi")), // 100Mi653 pod3: newPodDiskStats(pod3, resource.MustParse("150Mi"), resource.MustParse("150Mi"), resource.MustParse("50Mi")), // 350Mi654 pod4: newPodDiskStats(pod4, resource.MustParse("25Mi"), resource.MustParse("35Mi"), resource.MustParse("50Mi")), // 110Mi655 pod5: newPodDiskStats(pod5, resource.MustParse("225Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 375Mi656 pod6: newPodDiskStats(pod6, resource.MustParse("25Mi"), resource.MustParse("45Mi"), resource.MustParse("50Mi")), // 120Mi657 }658 statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {659 result, found := stats[pod]660 return result, found661 }662 pods := []*v1.Pod{pod1, pod3, pod2, pod4, pod5, pod6}663 orderedBy(disk(statsFn, []fsStatsType{fsStatsRoot, fsStatsLogs, fsStatsLocalVolumeSource}, v1.ResourceEphemeralStorage)).Sort(pods)664 expected := []*v1.Pod{pod5, pod3, pod1, pod6, pod4, pod2}665 for i := range expected {666 if pods[i] != expected[i] {667 t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)668 }669 }670}671func TestOrderedbyInodes(t *testing.T) {672 defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.LocalStorageCapacityIsolation, true)()673 low := newPod("low", defaultPriority, []v1.Container{674 newContainer("low", newResourceList("", "", ""), newResourceList("", "", "")),675 }, []v1.Volume{676 newVolume("local-volume", v1.VolumeSource{677 EmptyDir: &v1.EmptyDirVolumeSource{},678 }),679 })680 medium := newPod("medium", defaultPriority, []v1.Container{681 newContainer("medium", newResourceList("", "", ""), newResourceList("", "", "")),682 }, []v1.Volume{683 newVolume("local-volume", v1.VolumeSource{684 EmptyDir: &v1.EmptyDirVolumeSource{},685 }),686 })687 high := newPod("high", defaultPriority, []v1.Container{688 newContainer("high", newResourceList("", "", ""), newResourceList("", "", "")),689 }, []v1.Volume{690 newVolume("local-volume", v1.VolumeSource{691 EmptyDir: &v1.EmptyDirVolumeSource{},692 }),693 })694 stats := map[*v1.Pod]statsapi.PodStats{695 low: newPodInodeStats(low, resource.MustParse("50000"), resource.MustParse("100000"), resource.MustParse("50000")), // 200000696 medium: newPodInodeStats(medium, resource.MustParse("100000"), resource.MustParse("150000"), resource.MustParse("50000")), // 300000697 high: newPodInodeStats(high, resource.MustParse("200000"), resource.MustParse("150000"), resource.MustParse("50000")), // 400000698 }699 statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {700 result, found := stats[pod]701 return result, found702 }703 pods := []*v1.Pod{low, medium, high}704 orderedBy(disk(statsFn, []fsStatsType{fsStatsRoot, fsStatsLogs, fsStatsLocalVolumeSource}, resourceInodes)).Sort(pods)705 expected := []*v1.Pod{high, medium, low}706 for i := range expected {707 if pods[i] != expected[i] {708 t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)709 }710 }711}712// TestOrderedByPriorityDisk ensures we order pods by priority and then greediest resource consumer713func TestOrderedByPriorityDisk(t *testing.T) {714 defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.LocalStorageCapacityIsolation, true)()715 pod1 := newPod("above-requests-low-priority-high-usage", lowPriority, []v1.Container{716 newContainer("above-requests-low-priority-high-usage", newResourceList("", "", ""), newResourceList("", "", "")),717 }, []v1.Volume{718 newVolume("local-volume", v1.VolumeSource{719 EmptyDir: &v1.EmptyDirVolumeSource{},720 }),721 })722 pod2 := newPod("above-requests-low-priority-low-usage", lowPriority, []v1.Container{723 newContainer("above-requests-low-priority-low-usage", newResourceList("", "", ""), newResourceList("", "", "")),724 }, []v1.Volume{725 newVolume("local-volume", v1.VolumeSource{726 EmptyDir: &v1.EmptyDirVolumeSource{},727 }),728 })729 pod3 := newPod("above-requests-high-priority-high-usage", highPriority, []v1.Container{730 newContainer("above-requests-high-priority-high-usage", newResourceList("", "", "100Mi"), newResourceList("", "", "")),731 }, []v1.Volume{732 newVolume("local-volume", v1.VolumeSource{733 EmptyDir: &v1.EmptyDirVolumeSource{},734 }),735 })736 pod4 := newPod("above-requests-high-priority-low-usage", highPriority, []v1.Container{737 newContainer("above-requests-high-priority-low-usage", newResourceList("", "", "100Mi"), newResourceList("", "", "")),738 }, []v1.Volume{739 newVolume("local-volume", v1.VolumeSource{740 EmptyDir: &v1.EmptyDirVolumeSource{},741 }),742 })743 pod5 := newPod("below-requests-low-priority-high-usage", lowPriority, []v1.Container{744 newContainer("below-requests-low-priority-high-usage", newResourceList("", "", "1Gi"), newResourceList("", "", "")),745 }, []v1.Volume{746 newVolume("local-volume", v1.VolumeSource{747 EmptyDir: &v1.EmptyDirVolumeSource{},748 }),749 })750 pod6 := newPod("below-requests-low-priority-low-usage", lowPriority, []v1.Container{751 newContainer("below-requests-low-priority-low-usage", newResourceList("", "", "1Gi"), newResourceList("", "", "")),752 }, []v1.Volume{753 newVolume("local-volume", v1.VolumeSource{754 EmptyDir: &v1.EmptyDirVolumeSource{},755 }),756 })757 pod7 := newPod("below-requests-high-priority-high-usage", highPriority, []v1.Container{758 newContainer("below-requests-high-priority-high-usage", newResourceList("", "", "1Gi"), newResourceList("", "", "")),759 }, []v1.Volume{760 newVolume("local-volume", v1.VolumeSource{761 EmptyDir: &v1.EmptyDirVolumeSource{},762 }),763 })764 pod8 := newPod("below-requests-high-priority-low-usage", highPriority, []v1.Container{765 newContainer("below-requests-high-priority-low-usage", newResourceList("", "", "1Gi"), newResourceList("", "", "")),766 }, []v1.Volume{767 newVolume("local-volume", v1.VolumeSource{768 EmptyDir: &v1.EmptyDirVolumeSource{},769 }),770 })771 stats := map[*v1.Pod]statsapi.PodStats{772 pod1: newPodDiskStats(pod1, resource.MustParse("200Mi"), resource.MustParse("100Mi"), resource.MustParse("200Mi")), // 500 relative to request773 pod2: newPodDiskStats(pod2, resource.MustParse("10Mi"), resource.MustParse("10Mi"), resource.MustParse("30Mi")), // 50 relative to request774 pod3: newPodDiskStats(pod3, resource.MustParse("200Mi"), resource.MustParse("150Mi"), resource.MustParse("250Mi")), // 500 relative to request775 pod4: newPodDiskStats(pod4, resource.MustParse("90Mi"), resource.MustParse("50Mi"), resource.MustParse("10Mi")), // 50 relative to request776 pod5: newPodDiskStats(pod5, resource.MustParse("500Mi"), resource.MustParse("200Mi"), resource.MustParse("100Mi")), // -200 relative to request777 pod6: newPodDiskStats(pod6, resource.MustParse("50Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // -800 relative to request778 pod7: newPodDiskStats(pod7, resource.MustParse("250Mi"), resource.MustParse("500Mi"), resource.MustParse("50Mi")), // -200 relative to request779 pod8: newPodDiskStats(pod8, resource.MustParse("100Mi"), resource.MustParse("60Mi"), resource.MustParse("40Mi")), // -800 relative to request780 }781 statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {782 result, found := stats[pod]783 return result, found784 }785 pods := []*v1.Pod{pod8, pod7, pod6, pod5, pod4, pod3, pod2, pod1}786 expected := []*v1.Pod{pod1, pod2, pod3, pod4, pod5, pod6, pod7, pod8}787 fsStatsToMeasure := []fsStatsType{fsStatsRoot, fsStatsLogs, fsStatsLocalVolumeSource}788 orderedBy(exceedDiskRequests(statsFn, fsStatsToMeasure, v1.ResourceEphemeralStorage), priority, disk(statsFn, fsStatsToMeasure, v1.ResourceEphemeralStorage)).Sort(pods)789 for i := range expected {790 if pods[i] != expected[i] {791 t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)792 }793 }794}795// TestOrderedByPriorityInodes ensures we order pods by priority and then greediest resource consumer796func TestOrderedByPriorityInodes(t *testing.T) {797 pod1 := newPod("low-priority-high-usage", lowPriority, []v1.Container{798 newContainer("low-priority-high-usage", newResourceList("", "", ""), newResourceList("", "", "")),799 }, []v1.Volume{800 newVolume("local-volume", v1.VolumeSource{801 EmptyDir: &v1.EmptyDirVolumeSource{},802 }),803 })804 pod2 := newPod("low-priority-low-usage", lowPriority, []v1.Container{805 newContainer("low-priority-low-usage", newResourceList("", "", ""), newResourceList("", "", "")),806 }, []v1.Volume{807 newVolume("local-volume", v1.VolumeSource{808 EmptyDir: &v1.EmptyDirVolumeSource{},809 }),810 })811 pod3 := newPod("high-priority-high-usage", highPriority, []v1.Container{812 newContainer("high-priority-high-usage", newResourceList("", "", ""), newResourceList("", "", "")),813 }, []v1.Volume{814 newVolume("local-volume", v1.VolumeSource{815 EmptyDir: &v1.EmptyDirVolumeSource{},816 }),817 })818 pod4 := newPod("high-priority-low-usage", highPriority, []v1.Container{819 newContainer("high-priority-low-usage", newResourceList("", "", ""), newResourceList("", "", "")),820 }, []v1.Volume{821 newVolume("local-volume", v1.VolumeSource{822 EmptyDir: &v1.EmptyDirVolumeSource{},823 }),824 })825 stats := map[*v1.Pod]statsapi.PodStats{826 pod1: newPodInodeStats(pod1, resource.MustParse("50000"), resource.MustParse("100000"), resource.MustParse("250000")), // 400000827 pod2: newPodInodeStats(pod2, resource.MustParse("60000"), resource.MustParse("30000"), resource.MustParse("10000")), // 100000828 pod3: newPodInodeStats(pod3, resource.MustParse("150000"), resource.MustParse("150000"), resource.MustParse("50000")), // 350000829 pod4: newPodInodeStats(pod4, resource.MustParse("10000"), resource.MustParse("40000"), resource.MustParse("100000")), // 150000830 }831 statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {832 result, found := stats[pod]833 return result, found834 }835 pods := []*v1.Pod{pod4, pod3, pod2, pod1}836 orderedBy(priority, disk(statsFn, []fsStatsType{fsStatsRoot, fsStatsLogs, fsStatsLocalVolumeSource}, resourceInodes)).Sort(pods)...

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worker_pool_test.go

Source:worker_pool_test.go Github

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...50 t.Run("shouldStartMinWorkers", func(t *testing.T) {51 pool := newWorkerPool(20, 50, 1*time.Minute)52 defer pool.close()53 assert.Equal(t, int32(20), pool.workerCount)54 assert.NotEmpty(t, pool.workers)55 })56 })57 t.Run("close", func(t *testing.T) {58 t.Run("shouldSetClosedOnClose", func(t *testing.T) {59 pool := newWorkerPool(0, 2, 1*time.Minute)60 assert.False(t, pool.isClosed())61 pool.close()62 assert.True(t, pool.isClosed())63 })64 t.Run("shouldWaitForWorkersOnClose", func(t *testing.T) {65 pool := newWorkerPool(20, 40, 1*time.Minute)66 assert.Equal(t, int32(20), pool.workerCount)67 assert.NotEmpty(t, pool.workers)68 pool.close()69 assert.Equal(t, int32(0), pool.workerCount)70 assert.Empty(t, pool.workers)71 })72 })73 t.Run("workerEntryPoint", func(t *testing.T) {74 t.Run("shouldDieAfterKeepalive", func(t *testing.T) {75 pool := newWorkerPool(4, 8, 3*time.Second)76 defer pool.close()77 assert.Equal(t, int32(4), pool.workerCount)78 assert.NotEmpty(t, pool.workers)79 <-time.After(5 * time.Second)80 assert.Equal(t, int32(0), pool.workerCount)81 assert.Empty(t, pool.workers)82 })83 })84 t.Run("submit", func(t *testing.T) {85 t.Run("shouldSucceedWhenThereIsAvailableWorker", func(t *testing.T) {86 var workExecutions int3287 var workSignal = make(chan bool, 1)88 workFunc := func(stopper <-chan signal) {89 atomic.AddInt32(&workExecutions, 1)90 workSignal <- true91 }92 pool := newWorkerPool(1, 1, 5*time.Minute)93 defer pool.close()94 assert.NoError(t, pool.submit(workFunc))95 <-workSignal...

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signal.go

Source:signal.go Github

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...13}14func (s Signal) Len() int {15 return len(s)16}17func (s Signal) Empty() bool {18 return len(s) == 019}20func (s Signal) Copy() Signal {21 c := make(Signal, len(s))22 for e, p := range s {23 c[e] = p24 }25 return c26}27func (s *Signal) Split(n int) Signal {28 if s.Empty() {29 return nil30 }31 c := make(Signal, n)32 for e, p := range *s {33 delete(*s, e)34 c[e] = p35 n--36 if n == 0 {37 break38 }39 }40 if len(*s) == 0 {41 *s = nil42 }43 return c44}45func FromRaw(raw []uint32, prio uint8) Signal {46 if len(raw) == 0 {47 return nil48 }49 s := make(Signal, len(raw))50 for _, e := range raw {51 s[elemType(e)] = prioType(prio)52 }53 return s54}55func (s Signal) Serialize() Serial {56 if s.Empty() {57 return Serial{}58 }59 res := Serial{60 Elems: make([]elemType, len(s)),61 Prios: make([]prioType, len(s)),62 }63 i := 064 for e, p := range s {65 res.Elems[i] = e66 res.Prios[i] = p67 i++68 }69 return res70}71func (ser Serial) Deserialize() Signal {72 if len(ser.Elems) != len(ser.Prios) {73 panic("corrupted Serial")74 }75 if len(ser.Elems) == 0 {76 return nil77 }78 s := make(Signal, len(ser.Elems))79 for i, e := range ser.Elems {80 s[e] = ser.Prios[i]81 }82 return s83}84func (s Signal) Diff(s1 Signal) Signal {85 if s1.Empty() {86 return nil87 }88 var res Signal89 for e, p1 := range s1 {90 if p, ok := s[e]; ok && p >= p1 {91 continue92 }93 if res == nil {94 res = make(Signal)95 }96 res[e] = p197 }98 return res99}100func (s Signal) DiffRaw(raw []uint32, prio uint8) Signal {101 var res Signal102 for _, e := range raw {103 if p, ok := s[elemType(e)]; ok && p >= prioType(prio) {104 continue105 }106 if res == nil {107 res = make(Signal)108 }109 res[elemType(e)] = prioType(prio)110 }111 return res112}113func (s Signal) Intersection(s1 Signal) Signal {114 if s1.Empty() {115 return nil116 }117 res := make(Signal, len(s))118 for e, p := range s {119 if p1, ok := s1[e]; ok && p1 >= p {120 res[e] = p121 }122 }123 return res124}125func (s *Signal) Merge(s1 Signal) {126 if s1.Empty() {127 return128 }129 s0 := *s130 if s0 == nil {131 s0 = make(Signal, len(s1))132 *s = s0133 }134 for e, p1 := range s1 {135 if p, ok := s0[e]; !ok || p < p1 {136 s0[e] = p1137 }138 }139}140type Context struct {...

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Empty

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1import (2func main() {3 gtk.Init(nil)4 builder, err := gtk.BuilderNew()5 if err != nil {6 log.Fatal("Error creating builder:", err)7 }8 builder.AddFromString(`9 win, err := builder.GetObject("MainWindow")10 if err != nil {11 log.Fatal("Error getting window:", err)12 }13 win.(*gtk.Window).Connect("destroy", func() {14 gtk.MainQuit()15 })16 win.(*gtk.Window).ShowAll()17 gtk.Main()18}19import (20func main() {21 gtk.Init(nil)22 builder, err := gtk.BuilderNew()23 if err != nil {24 log.Fatal("Error creating builder:", err)25 }26 builder.AddFromString(`27 win, err := builder.GetObject("MainWindow")28 if err != nil {29 log.Fatal("Error getting

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Empty

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1import (2func main() {3 conn, err := dbus.SystemBus()4 if err != nil {5 fmt.Println("Failed to connect to system bus:", err)6 }7 c := make(chan *dbus.Signal, 10)8 conn.Signal(c)9 conn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,10 fmt.Println("Got signal:", s.Name)11}12import (13func main() {14 conn, err := dbus.SystemBus()15 if err != nil {16 fmt.Println("Failed to connect to system bus:", err)17 }18 c := make(chan *dbus.Signal, 10)19 conn.Signal(c)20 conn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,21 fmt.Println("Got signal:", s.Name)22}23import (24func main() {25 conn, err := dbus.SystemBus()26 if err != nil {27 fmt.Println("Failed to connect to system bus:", err)28 }29 c := make(chan *dbus.Signal, 10)30 conn.Signal(c)31 conn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,32 fmt.Println("Got signal:", s.Name)33}34import (

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1import (2func main() {3 conn, err := dbus.SystemBus()4 if err != nil {5 fmt.Println(err)6 }7 defer conn.Close()8 channel := make(chan *dbus.Signal, 10)9 conn.Signal(channel)10 conn.BusObject().Call("org.freedesktop.DBus.Introspectable.Empty", 0)11 fmt.Println(sig)12}13&{org.freedesktop.DBus 0xc0000a6a80}

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1import (2func main() {3 conn, err := dbus.SystemBus()4 if err != nil {5 fmt.Println("Failed to connect to system bus:", err)6 }7 obj := conn.Object("com.example.dbus.signal", "/com/example/dbus/signal/Object")8 call := obj.Call("com.example.dbus.signal.Object.Empty", 0)9 if call.Err != nil {10 fmt.Println("Failed to call Empty method:", call.Err)11 }12}

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1import (2func main() {3 sig := make(chan os.Signal, 1)4 signal.Notify(sig, os.Interrupt)5 go func() {6 for {7 select {8 fmt.Println("Interrupted")

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1import (2func main() {3 conn, err := dbus.SystemBus()4 if err != nil {5 fmt.Println("Error connecting to system bus")6 }7 signal := make(chan *dbus.Signal, 10)8 conn.Signal(signal)9 conn.BusObject().Call("org.freedesktop.DBus.AddMatch", 0,10 for v := range signal {11 fmt.Println("Signal received: ", v.Name)12 fmt.Println("Path: ", v.Path)13 fmt.Println("Interface: ", v.Interface)14 fmt.Println("Member: ", v.Member)15 fmt.Println("Body: ", v.Body)16 }17}

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1func main() {2 c := make(chan int)3 go func() {4 close(c)5 }()6 fmt.Println("Done!")7}8func main() {9 c := make(chan int)10 go func() {11 close(c)12 }()13 fmt.Println("Done!")14}15func main() {16 c := make(chan int)17 go func() {18 close(c)19 }()20 fmt.Println("Done!")21}22func main() {23 c := make(chan int)24 go func() {25 close(c)26 }()27 fmt.Println("Done!")28}29func main() {30 c := make(chan int)31 go func() {32 close(c)33 }()34 fmt.Println("Done!")35}36func main() {37 c := make(chan int)38 go func() {39 close(c)40 }()41 fmt.Println("Done!")42}43func main() {44 c := make(chan int)45 go func() {46 close(c)47 }()48 fmt.Println("Done!")49}50func main() {51 c := make(chan int)52 go func() {53 close(c)54 }()55 fmt.Println("Done!")56}57func main() {58 c := make(chan int)59 go func() {60 close(c)61 }()62 fmt.Println("Done!")63}

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1import "fmt"2import "time"3func main() {4ch:=make(chan string)5go func(){6}()7fmt.Println(msg)8time.Sleep(1*time.Second)9}10ch:=make(chan type, buffer_size)11import "fmt"12func main() {13ch:=make(chan string, 2)14fmt.Println(<-ch)15fmt.Println(<-ch)16}17close(channel_name)18import "fmt"19func main() {20ch:=make(chan string, 2)21close(ch)22fmt.Println(<-ch)23fmt.Println(<-ch)24}25for i:=range ch{26}27import "fmt"28func main() {29ch:=make(chan string, 2)30close(ch)31for i:=range ch{32fmt.Println(i)33}34}35select{

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Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.

LambdaTest Learning Hubs:

YouTube

You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.

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