[sourcemap_testing] Update pubspec to 3.8 and reformat.

Change-Id: Ia019903abd75f2c1df78503fa8f836f7f56714b1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/427564
Reviewed-by: Nate Biggs <[email protected]>
Commit-Queue: Nate Biggs <[email protected]>
Auto-Submit: Mayank Patke <[email protected]>

Author: fishythefish

pkg/sourcemap_testing/lib/src/stacktrace_helper.dart

@@ -284,8 +284,9 @@ Future testStackTrace(
       }
     }
     if (line.isMapped && !found) {
-      List<LineException> exceptions =
-          expectedIndex == 0 ? beforeExceptions : afterExceptions;
+      List<LineException> exceptions = expectedIndex == 0
+          ? beforeExceptions
+          : afterExceptions;
       for (LineException exception in exceptions) {
         String fileName = exception.fileName;
         if (line.methodName == exception.methodName &&

pkg/sourcemap_testing/lib/src/stepping_helper.dart

@@ -99,20 +99,24 @@ void checkD8Steps(
     outputFilename,
   );
 
-  List<_DartStackTraceDataEntry> trace =
-      result.map((entry) => entry.first).toList();
+  List<_DartStackTraceDataEntry> trace = result
+      .map((entry) => entry.first)
+      .toList();
   if (debug) _debugPrint(trace, outputPath);
 
-  List<String> recordStops =
-      trace.where((entry) => !entry.isError).map((entry) => '$entry').toList();
-
-  Set<int> recordStopLines =
-      trace.where((entry) => !entry.isError).map((entry) => entry.line).toSet();
-  Set<String> recordStopLineColumns =
-      trace
-          .where((entry) => !entry.isError)
-          .map((entry) => '${entry.line}:${entry.column}')
-          .toSet();
+  List<String> recordStops = trace
+      .where((entry) => !entry.isError)
+      .map((entry) => '$entry')
+      .toList();
+
+  Set<int> recordStopLines = trace
+      .where((entry) => !entry.isError)
+      .map((entry) => entry.line)
+      .toSet();
+  Set<String> recordStopLineColumns = trace
+      .where((entry) => !entry.isError)
+      .map((entry) => '${entry.line}:${entry.column}')
+      .toSet();
 
   List<String?> expectedStops = [];
   for (Annotation annotation in code.annotations.where(

pkg/sourcemap_testing/pubspec.yaml

@@ -4,7 +4,7 @@ name: sourcemap_testing
 publish_to: none
 
 environment:
-  sdk: ^3.7.0
+  sdk: ^3.8.0
 
 resolution: workspace