diff options
Diffstat (limited to 'pkg/eventchannel/event_test.go')
-rw-r--r-- | pkg/eventchannel/event_test.go | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/pkg/eventchannel/event_test.go b/pkg/eventchannel/event_test.go deleted file mode 100644 index 3649097d6..000000000 --- a/pkg/eventchannel/event_test.go +++ /dev/null @@ -1,146 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package eventchannel - -import ( - "fmt" - "sync" - "testing" - "time" - - "github.com/golang/protobuf/proto" -) - -// testEmitter is an emitter that can be used in tests. It records all events -// emitted, and whether it has been closed. -type testEmitter struct { - // mu protects all fields below. - mu sync.Mutex - - // events contains all emitted events. - events []proto.Message - - // closed records whether Close() was called. - closed bool -} - -// Emit implements Emitter.Emit. -func (te *testEmitter) Emit(msg proto.Message) (bool, error) { - te.mu.Lock() - defer te.mu.Unlock() - te.events = append(te.events, msg) - return false, nil -} - -// Close implements Emitter.Close. -func (te *testEmitter) Close() error { - te.mu.Lock() - defer te.mu.Unlock() - if te.closed { - return fmt.Errorf("closed called twice") - } - te.closed = true - return nil -} - -// testMessage implements proto.Message for testing. -type testMessage struct { - proto.Message - - // name is the name of the message, used by tests to compare messages. - name string -} - -func TestMultiEmitter(t *testing.T) { - // Create three testEmitters, tied together in a multiEmitter. - me := &multiEmitter{} - var emitters []*testEmitter - for i := 0; i < 3; i++ { - te := &testEmitter{} - emitters = append(emitters, te) - me.AddEmitter(te) - } - - // Emit three messages to multiEmitter. - names := []string{"foo", "bar", "baz"} - for _, name := range names { - m := testMessage{name: name} - if _, err := me.Emit(m); err != nil { - t.Fatal("me.Emit(%v) failed: %v", m, err) - } - } - - // All three emitters should have all three events. - for _, te := range emitters { - if got, want := len(te.events), len(names); got != want { - t.Fatalf("emitter got %d events, want %d", got, want) - } - for i, name := range names { - if got := te.events[i].(testMessage).name; got != name { - t.Errorf("emitter got message with name %q, want %q", got, name) - } - } - } - - // Close multiEmitter. - if err := me.Close(); err != nil { - t.Fatal("me.Close() failed: %v", err) - } - - // All testEmitters should be closed. - for _, te := range emitters { - if !te.closed { - t.Errorf("te.closed got false, want true") - } - } -} - -func TestRateLimitedEmitter(t *testing.T) { - // Create a RateLimittedEmitter that wraps a testEmitter. - te := &testEmitter{} - max := float64(5) // events per second - burst := 10 // events - rle := RateLimitedEmitterFrom(te, max, burst) - - // Send 50 messages in one shot. - for i := 0; i < 50; i++ { - if _, err := rle.Emit(testMessage{}); err != nil { - t.Fatalf("rle.Emit failed: %v", err) - } - } - - // We should have received only 10 messages. - if got, want := len(te.events), 10; got != want { - t.Errorf("got %d events, want %d", got, want) - } - - // Sleep for a second and then send another 50. - time.Sleep(1 * time.Second) - for i := 0; i < 50; i++ { - if _, err := rle.Emit(testMessage{}); err != nil { - t.Fatalf("rle.Emit failed: %v", err) - } - } - - // We should have at least 5 more message, plus maybe a few more if the - // test ran slowly. - got, wantAtLeast, wantAtMost := len(te.events), 15, 20 - if got < wantAtLeast { - t.Errorf("got %d events, want at least %d", got, wantAtLeast) - } - if got > wantAtMost { - t.Errorf("got %d events, want at most %d", got, wantAtMost) - } -} |