mirror of https://github.com/status-im/consul.git
93 lines
2.0 KiB
Go
93 lines
2.0 KiB
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: BUSL-1.1
|
|
|
|
package telemetry
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"sync"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
"go.opentelemetry.io/otel/attribute"
|
|
)
|
|
|
|
func TestGaugeStore(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
gaugeStore := NewGaugeStore()
|
|
|
|
attributes := []attribute.KeyValue{
|
|
{
|
|
Key: attribute.Key("test_key"),
|
|
Value: attribute.StringValue("test_value"),
|
|
},
|
|
}
|
|
|
|
gaugeStore.Set("test", 1.23, attributes)
|
|
|
|
// Should store a new gauge.
|
|
val, ok := gaugeStore.LoadAndDelete("test")
|
|
require.True(t, ok)
|
|
require.Equal(t, val.Value, 1.23)
|
|
require.Equal(t, val.Attributes, attributes)
|
|
|
|
// Gauge with key "test" have been deleted.
|
|
val, ok = gaugeStore.LoadAndDelete("test")
|
|
require.False(t, ok)
|
|
require.Nil(t, val)
|
|
|
|
gaugeStore.Set("duplicate", 1.5, nil)
|
|
gaugeStore.Set("duplicate", 6.7, nil)
|
|
|
|
// Gauge with key "duplicate" should hold the latest (last seen) value.
|
|
val, ok = gaugeStore.LoadAndDelete("duplicate")
|
|
require.True(t, ok)
|
|
require.Equal(t, val.Value, 6.7)
|
|
}
|
|
|
|
func TestGaugeCallback_Failure(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
k := "consul.raft.apply"
|
|
gaugeStore := NewGaugeStore()
|
|
gaugeStore.Set(k, 1.23, nil)
|
|
|
|
cb := gaugeStore.gaugeCallback(k)
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
|
|
cancel()
|
|
err := cb(ctx, nil)
|
|
require.ErrorIs(t, err, context.Canceled)
|
|
}
|
|
|
|
// TestGaugeStore_Race induces a race condition. When run with go test -race,
|
|
// this test should pass if implementation is concurrency safe.
|
|
func TestGaugeStore_Race(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
gaugeStore := NewGaugeStore()
|
|
|
|
wg := &sync.WaitGroup{}
|
|
samples := 100
|
|
errCh := make(chan error, samples)
|
|
for i := 0; i < samples; i++ {
|
|
wg.Add(1)
|
|
key := fmt.Sprintf("consul.test.%d", i)
|
|
value := 12.34
|
|
go func() {
|
|
defer wg.Done()
|
|
gaugeStore.Set(key, value, nil)
|
|
gv, _ := gaugeStore.LoadAndDelete(key)
|
|
if gv.Value != value {
|
|
errCh <- fmt.Errorf("expected value: '%f', but got: '%f' for key: '%s'", value, gv.Value, key)
|
|
}
|
|
}()
|
|
}
|
|
|
|
wg.Wait()
|
|
|
|
require.Empty(t, errCh)
|
|
}
|