updated tests

Author: bryce-b

Sources/OpenTelemetryApi/Metrics/ProxyMeter.swift

@@ -29,6 +29,14 @@ public struct ProxyMeter: Meter {
         return realMeter?.createDoubleMeasure(name: name, absolute: absolute) ?? AnyMeasureMetric<Double>(NoopMeasureMetric<Double>())
     }
 
+    public func createIntObservableGauge(name: String, callback: @escaping (IntObserverMetric) -> ()) -> IntObserverMetric {
+        return realMeter?.createIntObservableGauge(name: name, callback: callback) ?? NoopIntObserverMetric()
+    }
+
+    public func createDoubleObservableGauge(name: String, callback: @escaping (DoubleObserverMetric) -> ()) -> DoubleObserverMetric {
+        return realMeter?.createDoubleObservableGauge(name: name, callback: callback) ?? NoopDoubleObserverMetric()
+    }
+
     public func createIntObserver(name: String, absolute: Bool, callback: @escaping (IntObserverMetric) -> Void) -> IntObserverMetric {
         return realMeter?.createIntObserver(name: name, absolute: absolute, callback: callback) ?? NoopIntObserverMetric()
     }

Sources/OpenTelemetrySdk/Metrics/MeterSdk.swift

@@ -145,6 +145,8 @@ class MeterSdk: Meter {
 
                 var metric = Metric(namespace: meterName, name: metricName, desc: meterName+metricName, type: .intGauge, resource: resource, instrumentationLibraryInfo: instrumentationLibraryInfo)
 
+                gaugeInstrument.invokeCallback()
+
                 gaugeInstrument.observerHandles.forEach { handle in
                     let labelSet  = handle.key
                     let aggregator = handle.value.aggregator
@@ -163,6 +165,8 @@ class MeterSdk: Meter {
 
                 var metric = Metric(namespace: meterName, name: metricName, desc: meterName+metricName, type: .doubleGauge, resource: resource, instrumentationLibraryInfo: instrumentationLibraryInfo)
 
+                gaugeInstrument.invokeCallback()
+
                 gaugeInstrument.observerHandles.forEach { handle in
                     let labelSet  = handle.key
                     let aggregator = handle.value.aggregator

Tests/OpenTelemetryApiTests/Metrics/DefaultMeterProviderTests.swift

@@ -89,6 +89,14 @@ class TestNoopMeter: Meter {
         return NoopDoubleObserverMetric()
     }
 
+    func createIntObservableGauge(name: String, callback: @escaping (IntObserverMetric) -> ()) -> IntObserverMetric {
+        return NoopIntObserverMetric()
+    }
+
+    func createDoubleObservableGauge(name: String, callback: @escaping (DoubleObserverMetric) -> ()) -> DoubleObserverMetric {
+        return NoopDoubleObserverMetric()
+    }
+
     func getLabelSet(labels: [String: String]) -> LabelSet {
         return LabelSet.empty
     }