77 lines
2.4 KiB
Go
77 lines
2.4 KiB
Go
package metrics
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import (
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"testing"
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"github.com/go-kit/kit/metrics"
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"github.com/stretchr/testify/assert"
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)
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func TestNewMultiRegistry(t *testing.T) {
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registries := []Registry{newCollectingRetryMetrics(), newCollectingRetryMetrics()}
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registry := NewMultiRegistry(registries)
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registry.BackendReqsCounter().With("key", "requests").Add(1)
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registry.BackendReqDurationHistogram().With("key", "durations").Observe(2)
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registry.BackendRetriesCounter().With("key", "retries").Add(3)
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for _, collectingRegistry := range registries {
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cReqsCounter := collectingRegistry.BackendReqsCounter().(*counterMock)
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cReqDurationHistogram := collectingRegistry.BackendReqDurationHistogram().(*histogramMock)
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cRetriesCounter := collectingRegistry.BackendRetriesCounter().(*counterMock)
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wantCounterValue := float64(1)
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if cReqsCounter.counterValue != wantCounterValue {
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t.Errorf("Got value %f for ReqsCounter, want %f", cReqsCounter.counterValue, wantCounterValue)
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}
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wantHistogramValue := float64(2)
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if cReqDurationHistogram.lastHistogramValue != wantHistogramValue {
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t.Errorf("Got last observation %f for ReqDurationHistogram, want %f", cReqDurationHistogram.lastHistogramValue, wantHistogramValue)
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}
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wantCounterValue = float64(3)
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if cRetriesCounter.counterValue != wantCounterValue {
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t.Errorf("Got value %f for RetriesCounter, want %f", cRetriesCounter.counterValue, wantCounterValue)
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}
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assert.Equal(t, []string{"key", "requests"}, cReqsCounter.lastLabelValues)
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assert.Equal(t, []string{"key", "durations"}, cReqDurationHistogram.lastLabelValues)
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assert.Equal(t, []string{"key", "retries"}, cRetriesCounter.lastLabelValues)
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}
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}
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func newCollectingRetryMetrics() Registry {
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return &standardRegistry{
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backendReqsCounter: &counterMock{},
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backendReqDurationHistogram: &histogramMock{},
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backendRetriesCounter: &counterMock{},
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}
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}
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type counterMock struct {
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counterValue float64
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lastLabelValues []string
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}
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func (c *counterMock) With(labelValues ...string) metrics.Counter {
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c.lastLabelValues = labelValues
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return c
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}
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func (c *counterMock) Add(delta float64) {
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c.counterValue += delta
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}
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type histogramMock struct {
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lastHistogramValue float64
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lastLabelValues []string
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}
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func (c *histogramMock) With(labelValues ...string) metrics.Histogram {
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c.lastLabelValues = labelValues
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return c
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}
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func (c *histogramMock) Observe(value float64) {
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c.lastHistogramValue = value
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}
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