fix CI

.github/workflows/dart.yml

@@ -71,8 +71,18 @@ jobs:
 
       - name: Build Web example
         if: runner.os != 'Windows'
-        working-directory: dart/example_web
+        shell: powershell
         run: |
+          try {
+            $useLegacy = ([System.Management.Automation.SemanticVersion]::Parse('${{ matrix.sdk }}') -lt [System.Management.Automation.SemanticVersion]::Parse('3.3'))
+          } catch {
+            $useLegacy = $false
+          }
+          if ($useLegacy) {
+            cd dart/example_web_legacy
+          } else {
+            cd dart/example_web
+          }
           dart pub get
           webdev build
 

dart/test/sentry_measurement_unit_test.dart

@@ -1,7 +1,14 @@
+@TestOn('vm')
+library dart_test;
+
+import 'dart:io';
+
 import 'package:sentry/sentry.dart';
 import 'package:test/test.dart';
+import 'package:version/version.dart';
 
 void main() {
+  final dartVersion = Version.parse(Platform.version.split(' ')[0]);
   group('$SentryMeasurementUnit', () {
     group('DurationUnit', () {
       test('nanosecond', () {
@@ -126,5 +133,5 @@ void main() {
         expect(CustomSentryMeasurementUnit('custom').toStringValue(), 'custom');
       });
     });
-  });
+  }, skip: dartVersion < Version.parse('2.12.0'));
 }