Fix static type hints for LazyIntGauge: GAUGE -> IGAUGE

This would previously break repeated metric access.
Should not affect production code, since the static type hint is only
used for checking against an already-present metric at creation time.
Also, added idempotency checks to registry unit tests.

1 files changed, 2 insertions, 2 deletions

diff --git a/library/cpp/monlib/metrics/metric_registry.cpp b/library/cpp/monlib/metrics/metric_registry.cpp
index b986f40249f..5c6cabf2fc7 100644
--- a/library/cpp/monlib/metrics/metric_registry.cpp
+++ b/library/cpp/monlib/metrics/metric_registry.cpp
@@ -77,11 +77,11 @@ namespace NMonitoring {
     }
 
     TLazyIntGauge* TMetricRegistry::LazyIntGauge(TLabels labels, std::function<i64()> supplier) {
-        return Metric<TLazyIntGauge, EMetricType::GAUGE>(std::move(labels), std::move(supplier));
+        return Metric<TLazyIntGauge, EMetricType::IGAUGE>(std::move(labels), std::move(supplier));
     }
 
     TLazyIntGauge* TMetricRegistry::LazyIntGauge(ILabelsPtr labels, std::function<i64()> supplier) {
-        return Metric<TLazyIntGauge, EMetricType::GAUGE>(std::move(labels), std::move(supplier));
+        return Metric<TLazyIntGauge, EMetricType::IGAUGE>(std::move(labels), std::move(supplier));
     }
 
     TCounter* TMetricRegistry::Counter(TLabels labels) {