Function counterValue

cmd/cache-proxy/cache_test.go:18–25

counterValue reads a Prometheus counter's current value without pulling in the testutil package (and its extra module deps). Used to assert the Open-vs- openFile hit-count split.

(t *testing.T, c prometheus.Counter)

	"github.com/prometheus/client_golang/prometheus"
	dto "github.com/prometheus/client_model/go"
)

// counterValue reads a Prometheus counter's current value without pulling in the
// testutil package (and its extra module deps). Used to assert the Open-vs-
// openFile hit-count split.
func counterValue(t *testing.T, c prometheus.Counter) float64 {
	t.Helper()
	var m dto.Metric
	if err := c.Write(&m); err != nil {
		t.Fatalf("read counter: %v", err)
	}