Improve SentryException#value, remove stringified stack trace

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Features
+
+- Improve `SentryException#value`, remove stringified stack trace ([##1470](https://github.com/getsentry/sentry-dart/pull/#1470))
+
 ### Fixes
 
 - Check if the Native SDKs are enabled when using `autoInitializeNativeSdk=false` ([#1489](https://github.com/getsentry/sentry-dart/pull/1489))

dart/lib/src/sentry_exception_factory.dart

@@ -57,11 +57,15 @@ class SentryExceptionFactory {
       }
     }
 
+    final exceptionString = exception.toString();
+    final stackTraceString = stackTrace.toString();
+    final value = exceptionString.replaceAll(stackTraceString, '').trim();
+
     // if --obfuscate feature is enabled, 'type' won't be human readable.
     // https://flutter.dev/docs/deployment/obfuscate#caveat
     return SentryException(
       type: (throwable.runtimeType).toString(),
-      value: throwable.toString(),
+      value: value.isNotEmpty ? value : null,
       mechanism: mechanism,
       stackTrace: sentryStackTrace,
       throwable: throwable,

dart/test/sentry_exception_factory_test.dart

@@ -169,6 +169,25 @@ void main() {
 
     expect(sentryException.throwable, throwable);
   });
+
+  test('should remove stackTrace string from value', () {
+    final stackTraceError = StackTraceError();
+    final sentryException = fixture.getSut().getSentryException(stackTraceError,
+        stackTrace: StackTraceErrorStackTrace());
+    final expected =
+        "NetworkError(type: NetworkErrorType.unknown, error: Instance of 'iH')";
+
+    expect(sentryException.value, expected);
+  });
+
+  test('no empty value', () {
+    final stackTraceError = StackTraceError();
+    stackTraceError.prefix = "";
+    final sentryException = fixture.getSut().getSentryException(stackTraceError,
+        stackTrace: StackTraceErrorStackTrace());
+
+    expect(sentryException.value, isNull);
+  });
 }
 
 class CustomError extends Error {}
@@ -187,6 +206,65 @@ class CustomExceptionStackTraceExtractor
   }
 }
 
+class StackTraceError extends Error {
+  var prefix =
+      "NetworkError(type: NetworkErrorType.unknown, error: Instance of 'iH')";
+
+  @override
+  String toString() {
+    return '''
+$prefix
+
+pid: 9437, tid: 10069, name 1.ui
+os: android arch: arm64 comp: yes sim: no
+build_id: 'bca64abfdfcc84d231bb8f1ccdbfbd8d'
+isolate_dso_base: 752602b000, vm_dso_base: 752602b000
+isolate_instructions: 7526344980, vm_instructions: 752633f000
+#00 abs 00000075266c2fbf virt 0000000000697fbf _kDartIsolateSnapshotInstructions+0x37e63f
+#1 abs 000000752685211f virt 000000000082711f _kDartIsolateSnapshotInstructions+0x50d79f
+#2 abs 0000007526851cb3 virt 0000000000826cb3 _kDartIsolateSnapshotInstructions+0x50d333
+#3 abs 0000007526851c63 virt 0000000000826c63 _kDartIsolateSnapshotInstructions+0x50d2e3
+#4 abs 0000007526851bf3 virt 0000000000826bf3 _kDartIsolateSnapshotInstructions+0x50d273
+#5 abs 0000007526a0b44b virt 00000000009e044b _kDartIsolateSnapshotInstructions+0x6c6acb
+#6 abs 0000007526a068a7 virt 00000000009db8a7 _kDartIsolateSnapshotInstructions+0x6c1f27
+#7 abs 0000007526b57a2b virt 0000000000b2ca2b _kDartIsolateSnapshotInstructions+0x8130ab
+#8 abs 0000007526b5d93b virt 0000000000b3293b _kDartIsolateSnapshotInstructions+0x818fbb
+#9 abs 0000007526a2333b virt 00000000009f833b _kDartIsolateSnapshotInstructions+0x6de9bb
+#10 abs 0000007526937957 virt 000000000090c957 _kDartIsolateSnapshotInstructions+0x5f2fd7
+#11 abs 0000007526a243a3 virt 00000000009f93a3 _kDartIsolateSnapshotInstructions+0x6dfa23
+#12 abs 000000752636273b virt 000000000033773b _kDartIsolateSnapshotInstructions+0x1ddbb
+#13 abs 0000007526a36ac3 virt 0000000000a0bac3 _kDartIsolateSnapshotInstructions+0x6f2143
+#14 abs 00000075263626af virt 00000000003376af _kDartIsolateSnapshotInstructions+0x1dd2f''';
+  }
+}
+
+class StackTraceErrorStackTrace extends StackTrace {
+  @override
+  String toString() {
+    return '''
+pid: 9437, tid: 10069, name 1.ui
+os: android arch: arm64 comp: yes sim: no
+build_id: 'bca64abfdfcc84d231bb8f1ccdbfbd8d'
+isolate_dso_base: 752602b000, vm_dso_base: 752602b000
+isolate_instructions: 7526344980, vm_instructions: 752633f000
+#00 abs 00000075266c2fbf virt 0000000000697fbf _kDartIsolateSnapshotInstructions+0x37e63f
+#1 abs 000000752685211f virt 000000000082711f _kDartIsolateSnapshotInstructions+0x50d79f
+#2 abs 0000007526851cb3 virt 0000000000826cb3 _kDartIsolateSnapshotInstructions+0x50d333
+#3 abs 0000007526851c63 virt 0000000000826c63 _kDartIsolateSnapshotInstructions+0x50d2e3
+#4 abs 0000007526851bf3 virt 0000000000826bf3 _kDartIsolateSnapshotInstructions+0x50d273
+#5 abs 0000007526a0b44b virt 00000000009e044b _kDartIsolateSnapshotInstructions+0x6c6acb
+#6 abs 0000007526a068a7 virt 00000000009db8a7 _kDartIsolateSnapshotInstructions+0x6c1f27
+#7 abs 0000007526b57a2b virt 0000000000b2ca2b _kDartIsolateSnapshotInstructions+0x8130ab
+#8 abs 0000007526b5d93b virt 0000000000b3293b _kDartIsolateSnapshotInstructions+0x818fbb
+#9 abs 0000007526a2333b virt 00000000009f833b _kDartIsolateSnapshotInstructions+0x6de9bb
+#10 abs 0000007526937957 virt 000000000090c957 _kDartIsolateSnapshotInstructions+0x5f2fd7
+#11 abs 0000007526a243a3 virt 00000000009f93a3 _kDartIsolateSnapshotInstructions+0x6dfa23
+#12 abs 000000752636273b virt 000000000033773b _kDartIsolateSnapshotInstructions+0x1ddbb
+#13 abs 0000007526a36ac3 virt 0000000000a0bac3 _kDartIsolateSnapshotInstructions+0x6f2143
+#14 abs 00000075263626af virt 00000000003376af _kDartIsolateSnapshotInstructions+0x1dd2f''';
+  }
+}
+
 class Fixture {
   final options = SentryOptions(dsn: fakeDsn);
 

flutter/example/lib/main.dart

@@ -137,6 +137,14 @@ class MainScaffold extends StatelessWidget {
         child: Column(
           children: [
             const Center(child: Text('Trigger an action:\n')),
+            ElevatedButton(
+              onPressed: () {
+                final stackTrace = StackTrace.current;
+                NetworkError(type: NetworkErrorType.unknown, error: Instance of 'iH')
+                print(stackTrace);
+              },
+              child: const Text('StackTrace'),
+            ),
             ElevatedButton(
               onPressed: () => sqfliteTest(),
               child: const Text('sqflite'),