forked from mirrors/statsd_exporter
87 lines
2.4 KiB
Go
87 lines
2.4 KiB
Go
// Copyright 2013 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package event
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import (
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"testing"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/statsd_exporter/pkg/clock"
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)
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var eventsFlushed = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "statsd_exporter_event_queue_flushed_total",
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Help: "Number of times events were flushed to exporter",
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},
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)
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func TestEventThresholdFlush(t *testing.T) {
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c := make(chan Events, 100)
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// We're not going to flush during this test, so the duration doesn't matter.
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eq := NewEventQueue(c, 5, time.Second, eventsFlushed)
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e := make(Events, 13)
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go func() {
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eq.Queue(e)
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}()
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batch := <-c
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if len(batch) != 5 {
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t.Fatalf("Expected event batch to be 5 elements, but got %v", len(batch))
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}
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batch = <-c
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if len(batch) != 5 {
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t.Fatalf("Expected event batch to be 5 elements, but got %v", len(batch))
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}
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batch = <-c
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if len(batch) != 3 {
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t.Fatalf("Expected event batch to be 3 elements, but got %v", len(batch))
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}
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}
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func TestEventIntervalFlush(t *testing.T) {
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// Mock a time.NewTicker
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tickerCh := make(chan time.Time)
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clock.ClockInstance = &clock.Clock{
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TickerCh: tickerCh,
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}
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clock.ClockInstance.Instant = time.Unix(0, 0)
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c := make(chan Events, 100)
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eq := NewEventQueue(c, 1000, time.Second*1000, eventsFlushed)
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e := make(Events, 10)
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eq.Queue(e)
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if eq.Len() != 10 {
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t.Fatal("Expected 10 events to be queued, but got", eq.Len())
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}
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if len(eq.C) != 0 {
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t.Fatal("Expected 0 events in the event channel, but got", len(eq.C))
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}
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// Tick time forward to trigger a flush
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clock.ClockInstance.Instant = time.Unix(10000, 0)
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clock.ClockInstance.TickerCh <- time.Unix(10000, 0)
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events := <-eq.C
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if eq.Len() != 0 {
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t.Fatal("Expected 0 events to be queued, but got", eq.Len())
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}
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if len(events) != 10 {
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t.Fatal("Expected 10 events in the event channel, but got", len(events))
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}
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}
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