Add test logging

Author: noahsmartin

Samples/SentrySampleShared/SentrySampleShared/UIViewControllerExtension.swift

@@ -13,6 +13,7 @@ public extension UIViewController {
           }
         }
         if result == nil {
+          print("Could not create transaction observer")
             UIAssert.fail("Transaction was not created")
         }
         return result

Sources/Sentry/SentryPerformanceTracker.m

@@ -71,15 +71,15 @@ - (SentrySpanId *)startSpanWithName:(NSString *)name
         else {
             if ([SentryUIEventTracker isUIEventOperation:span.operation]) {
                 SENTRY_LOG_DEBUG(
-                    @"Cancelling previous UI event span %@", span.spanId.sentrySpanIdString);
+                    @"[NEW SPAN %@] Cancelling previous UI event span %@ (%@)", name, span.spanDescription, span.spanId.sentrySpanIdString);
                 [span finishWithStatus:kSentrySpanStatusCancelled];
                 bindToScope = YES;
             }
         }
 #endif // SENTRY_HAS_UIKIT
 
         SENTRY_LOG_DEBUG(
-            @"Starting new transaction for %@ with bindToScope: %d", name, bindToScope);
+            @"[NEW SPAN %@] Starting new transaction for %@ with bindToScope: %d previousSpan: %@ (%@)", name, name, bindToScope, span.operation, span.spanId.sentrySpanIdString);
 
         newSpan = [SentrySDK.currentHub
             startTransactionWithContext:context

Sources/Sentry/SentryScope.m

@@ -145,6 +145,7 @@ - (void)addBreadcrumb:(SentryBreadcrumb *)crumb
 
 - (void)setSpan:(nullable id<SentrySpan>)span
 {
+    SENTRY_LOG_DEBUG(@"Setting span to %@", span);
     @synchronized(_spanLock) {
         _span = span;