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package proc
import (
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
)
// Verify that the tracker finds and tracks or ignores procs based on the
// namer, and that it can distinguish between two procs with the same pid
// but different start time.
func TestTrackerBasic(t *testing.T) {
p1, p2, p3 := 1, 2, 3
n1, n2, n3, n4 := "g1", "g2", "g3", "g4"
t1, t2, t3 := time.Unix(1, 0).UTC(), time.Unix(2, 0).UTC(), time.Unix(3, 0).UTC()
tests := []struct {
procs []IDInfo
want []Update
}{
{
[]IDInfo{newProcStart(p1, n1, 1), newProcStart(p3, n3, 1)},
[]Update{{GroupName: n1, Start: t1, Wchans: msi{}}},
},
{
// p3 (ignored) has exited and p2 has appeared
[]IDInfo{newProcStart(p1, n1, 1), newProcStart(p2, n2, 2)},
[]Update{{GroupName: n1, Start: t1, Wchans: msi{}}, {GroupName: n2, Start: t2, Wchans: msi{}}},
},
{
// p1 has exited and a new proc with a new name has taken its pid
[]IDInfo{newProcStart(p1, n4, 3), newProcStart(p2, n2, 2)},
[]Update{{GroupName: n4, Start: t3, Wchans: msi{}}, {GroupName: n2, Start: t2, Wchans: msi{}}},
},
}
// Note that n3 should not be tracked according to our namer.
tr := NewTracker(newNamer(n1, n2, n4), false, false, false)
opts := cmpopts.SortSlices(lessUpdateGroupName)
for i, tc := range tests {
_, got, err := tr.Update(procInfoIter(tc.procs...))
noerr(t, err)
if diff := cmp.Diff(got, tc.want, opts); diff != "" {
t.Errorf("%d: update differs: (-got +want)\n%s", i, diff)
}
}
}
// TestTrackerChildren verifies that when the tracker is asked to track
// children, processes not selected by the namer are still tracked if
// they're children of ones that are.
func TestTrackerChildren(t *testing.T) {
p1, p2, p3 := 1, 2, 3
n1, n2, n3 := "g1", "g2", "g3"
// In this test everything starts at time t1 for simplicity
t1 := time.Unix(0, 0).UTC()
tests := []struct {
procs []IDInfo
want []Update
}{
{
[]IDInfo{
newProcParent(p1, n1, 0),
newProcParent(p2, n2, p1),
},
[]Update{{GroupName: n2, Start: t1, Wchans: msi{}}},
},
{
[]IDInfo{
newProcParent(p1, n1, 0),
newProcParent(p2, n2, p1),
newProcParent(p3, n3, p2),
},
[]Update{{GroupName: n2, Start: t1, Wchans: msi{}}, {GroupName: n2, Start: t1, Wchans: msi{}}},
},
}
// Only n2 and children of n2s should be tracked
tr := NewTracker(newNamer(n2), true, false, false)
for i, tc := range tests {
_, got, err := tr.Update(procInfoIter(tc.procs...))
noerr(t, err)
if diff := cmp.Diff(got, tc.want); diff != "" {
t.Errorf("%d: update differs: (-got +want)\n%s", i, diff)
}
}
}
// TestTrackerMetrics verifies that the updates returned by the tracker
// match the input we're giving it.
func TestTrackerMetrics(t *testing.T) {
p, n, tm := 1, "g1", time.Unix(0, 0).UTC()
tests := []struct {
proc IDInfo
want Update
}{
{
piinfost(p, n, Counts{1, 2, 3, 4, 5, 6, 0, 0}, Memory{7, 8, 0},
Filedesc{1, 10}, 9, States{Sleeping: 1}),
Update{n, Delta{}, Memory{7, 8, 0}, Filedesc{1, 10}, tm,
9, States{Sleeping: 1}, msi{}, nil},
},
{
piinfost(p, n, Counts{2, 3, 4, 5, 6, 7, 0, 0}, Memory{1, 2, 0},
Filedesc{2, 20}, 1, States{Running: 1}),
Update{n, Delta{1, 1, 1, 1, 1, 1, 0, 0}, Memory{1, 2, 0},
Filedesc{2, 20}, tm, 1, States{Running: 1}, msi{}, nil},
},
}
tr := NewTracker(newNamer(n), false, false, false)
for i, tc := range tests {
_, got, err := tr.Update(procInfoIter(tc.proc))
noerr(t, err)
if diff := cmp.Diff(got, []Update{tc.want}); diff != "" {
t.Errorf("%d: update differs: (-got +want)\n%s", i, diff)
}
}
}
func TestTrackerThreads(t *testing.T) {
p, n, tm := 1, "g1", time.Unix(0, 0).UTC()
tests := []struct {
proc IDInfo
want Update
}{
{
piinfo(p, n, Counts{}, Memory{}, Filedesc{1, 1}, 1),
Update{n, Delta{}, Memory{}, Filedesc{1, 1}, tm, 1, States{}, msi{}, nil},
}, {
piinfot(p, n, Counts{}, Memory{}, Filedesc{1, 1}, []Thread{
{ThreadID(ID{p, 0}), "t1", Counts{1, 2, 3, 4, 5, 6, 0, 0}, "", States{}},
{ThreadID(ID{p + 1, 0}), "t2", Counts{1, 1, 1, 1, 1, 1, 0, 0}, "", States{}},
}),
Update{n, Delta{}, Memory{}, Filedesc{1, 1}, tm, 2, States{}, msi{},
[]ThreadUpdate{
{"t1", Delta{}},
{"t2", Delta{}},
},
},
}, {
piinfot(p, n, Counts{}, Memory{}, Filedesc{1, 1}, []Thread{
{ThreadID(ID{p, 0}), "t1", Counts{2, 3, 4, 5, 6, 7, 0, 0}, "", States{}},
{ThreadID(ID{p + 1, 0}), "t2", Counts{2, 2, 2, 2, 2, 2, 0, 0}, "", States{}},
{ThreadID(ID{p + 2, 0}), "t2", Counts{1, 1, 1, 1, 1, 1, 0, 0}, "", States{}},
}),
Update{n, Delta{}, Memory{}, Filedesc{1, 1}, tm, 3, States{}, msi{},
[]ThreadUpdate{
{"t1", Delta{1, 1, 1, 1, 1, 1, 0, 0}},
{"t2", Delta{1, 1, 1, 1, 1, 1, 0, 0}},
{"t2", Delta{}},
},
},
}, {
piinfot(p, n, Counts{}, Memory{}, Filedesc{1, 1}, []Thread{
{ThreadID(ID{p, 0}), "t1", Counts{2, 3, 4, 5, 6, 7, 0, 0}, "", States{}},
{ThreadID(ID{p + 2, 0}), "t2", Counts{1, 2, 3, 4, 5, 6, 0, 0}, "", States{}},
}),
Update{n, Delta{}, Memory{}, Filedesc{1, 1}, tm, 2, States{}, msi{},
[]ThreadUpdate{
{"t1", Delta{}},
{"t2", Delta{0, 1, 2, 3, 4, 5, 0, 0}},
},
},
},
}
tr := NewTracker(newNamer(n), false, false, false)
opts := cmpopts.SortSlices(lessThreadUpdate)
for i, tc := range tests {
_, got, err := tr.Update(procInfoIter(tc.proc))
noerr(t, err)
if diff := cmp.Diff(got, []Update{tc.want}, opts); diff != "" {
t.Errorf("%d: update differs: (-got +want)\n%s, %v, %v", i, diff, got[0].Threads, tc.want.Threads)
}
}
}
|
