[coverage] Add a test to document crbug/v8/10628

Just a test for now to document how trailing space after async
functions is not removed by SourceRangeAstVisitor.

Bug: v8:10628
Change-Id: I40f0d911c59540ea835c807a2be5b0d1488291d9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2259852
Auto-Submit: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68476}

test/mjsunit/code-coverage-block-async.js

@@ -136,4 +136,23 @@ test().then(r => r.bar());                // 0350
  {"start":152,"end":253,"count":1},
  {"start":362,"end":374,"count":1}]);
 
+// Documents the open bug that causes trailing space after `finally`
+// not to be removed by SourceRangeAstVisitor.
+TestCoverage(
+"https://crbug.com/v8/10628",
+`
+async function abc() {                    // 0000
+ try {                                    // 0050
+  return 'abc';                           // 0100
+ } finally {                              // 0150
+  console.log('in finally');              // 0200
+ }                                        // 0250
+}                                         // 0300
+abc();                                    // 0350
+%PerformMicrotaskCheckpoint();            // 0400
+`,
+[{"start":0,"end":449,"count":1},
+ {"start":0,"end":301,"count":1},
+ {"start":252,"end":300,"count":0}]);
+
 %DebugToggleBlockCoverage(false);