wehub-resource-sync
47 lines
1.4 KiB
Go
47 lines
1.4 KiB
Go
package plugin
|
|
|
|
import "testing"
|
|
|
|
func TestAcquireCodeGraphSlotCapsInstances(t *testing.T) {
|
|
// Drain any residual count from parallel tests by asserting a clean start.
|
|
if got := liveCodeGraphInstances.Load(); got != 0 {
|
|
t.Fatalf("expected 0 live instances at start, got %d", got)
|
|
}
|
|
|
|
releases := make([]func(), 0, maxCodeGraphInstances)
|
|
for i := 0; i < maxCodeGraphInstances; i++ {
|
|
release, err := acquireCodeGraphSlot()
|
|
if err != nil {
|
|
t.Fatalf("acquire %d within cap should succeed: %v", i, err)
|
|
}
|
|
releases = append(releases, release)
|
|
}
|
|
|
|
// One past the cap must be refused, and the counter must not leak upward.
|
|
if _, err := acquireCodeGraphSlot(); err == nil {
|
|
t.Fatal("acquiring past the cap should fail")
|
|
}
|
|
if got := liveCodeGraphInstances.Load(); got != int32(maxCodeGraphInstances) {
|
|
t.Fatalf("count must stay at cap after a refused acquire, got %d", got)
|
|
}
|
|
|
|
// Releasing frees a slot, and release is idempotent.
|
|
releases[0]()
|
|
releases[0]()
|
|
if got := liveCodeGraphInstances.Load(); got != int32(maxCodeGraphInstances-1) {
|
|
t.Fatalf("double-release must free exactly one slot, got %d", got)
|
|
}
|
|
release, err := acquireCodeGraphSlot()
|
|
if err != nil {
|
|
t.Fatalf("a freed slot should be reusable: %v", err)
|
|
}
|
|
releases[0] = release
|
|
|
|
for _, r := range releases {
|
|
r()
|
|
}
|
|
if got := liveCodeGraphInstances.Load(); got != 0 {
|
|
t.Fatalf("all slots must be freed at end, got %d", got)
|
|
}
|
|
}
|