add to useFeatures list if enableW3CHeaders is set to true (#87)

Author: Hongyan Jiang

Sources/InstanaAgent/Beacons/CoreBeacon/CoreBeaconFactory.swift

@@ -26,6 +26,9 @@ class CoreBeaconFactory {
         if session.dropBeaconReporting {
             array.append(mobileFeatureDropBeaconReporting)
         }
+        if conf.enableW3CHeaders == true {
+            array.append(mobileFeatureEnableW3CHeaders)
+        }
         return array.isEmpty ? nil : array.joined(separator: ",")
     }
 

Sources/InstanaAgent/Configuration/Defines.swift

@@ -68,6 +68,7 @@ let mobileFeaturePerformanceLowMemory = "lm"
 let mobileFeaturePerformanceANR = "anr"
 let mobileFeatureAutoScreenNameCapture = "sn"
 let mobileFeatureDropBeaconReporting = "db"
+let mobileFeatureEnableW3CHeaders = "ot"
 
 // OpenTelemetry
 let TRACE_PARENT = "traceparent"

Tests/InstanaAgentTests/Beacons/CoreBeacon/CoreBeaconFactoryTests.swift

@@ -246,15 +246,16 @@ class CoreBeaconFactoryTests: InstanaTestCase {
         // Given
         let config = InstanaConfiguration.default(key: "key", reportingURL: URL(string: "http://localhost:3000")!,
                 enableCrashReporting: true, perfConfig: InstanaPerformanceConfig(enableAppStartTimeReport: true,
-                enableAnrReport: true, anrThreshold: 4.0, enableLowMemoryReport: true))
+                enableAnrReport: true, anrThreshold: 4.0, enableLowMemoryReport: true),
+                enableW3CHeaders: true)
         let session = InstanaSession(configuration: config, propertyHandler: InstanaPropertyHandler(),
                                      collectionEnabled: true, autoCaptureScreenNames: true, debugAllScreenNames: true,
                                      dropBeaconReporting: true)
         // When
         let factory = CoreBeaconFactory(session)
 
         // Then
-        AssertTrue(factory.mobileFeatures! == "c,lm,anr,sn,db")
+        AssertTrue(factory.mobileFeatures! == "c,lm,anr,sn,db,ot")
     }
 
     func test_create_from_string() {