feat(test): Represent uncaught errors (#14513)

This commit adds better reporting of uncaught errors
in top level scope of testing files. This change affects
both console runner as well as LSP runner.

1 files changed, 14 insertions, 2 deletions

diff --git a/cli/tests/testdata/test/unhandled_rejection.out b/cli/tests/testdata/test/unhandled_rejection.out
index fae353a28..50b0ad6ab 100644
--- a/cli/tests/testdata/test/unhandled_rejection.out
+++ b/cli/tests/testdata/test/unhandled_rejection.out
@@ -1,10 +1,22 @@
 Check [WILDCARD]/test/unhandled_rejection.ts
+Uncaught error from ./test/unhandled_rejection.ts FAILED
 
-test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
+ ERRORS 
 
-error: Uncaught (in promise) Error: rejection
+./test/unhandled_rejection.ts (uncaught error)
+error: (in promise) Error: rejection
   reject(new Error("rejection"));
          ^
     at [WILDCARD]/test/unhandled_rejection.ts:2:10
     at new Promise (<anonymous>)
     at [WILDCARD]/test/unhandled_rejection.ts:1:1
+This error was not caught from a test and caused the test runner to fail on the referenced module.
+It most likely originated from a dangling promise, event/timeout handler or top-level code.
+
+ FAILURES 
+
+./test/unhandled_rejection.ts (uncaught error)
+
+test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
+
+error: Test failed