chore: fix flaky steps_output_within - part 2 (#14562)

1 files changed, 7 insertions, 0 deletions

diff --git a/test_util/src/lib.rs b/test_util/src/lib.rs
index 59a777d40..0eea21b04 100644
--- a/test_util/src/lib.rs
+++ b/test_util/src/lib.rs
@@ -1819,6 +1819,13 @@ impl<'a> CheckOutputIntegrationTest<'a> {
 
     actual = strip_ansi_codes(&actual).to_string();
 
+    // deno test's output capturing flushes with a zero-width space in order to
+    // synchronize the output pipes. Occassionally this zero width space
+    // might end up in the output so strip it from the output comparison here.
+    if args.get(0) == Some(&"test") {
+      actual = actual.replace('\u{200B}', "");
+    }
+
     let expected = if let Some(s) = self.output_str {
       s.to_owned()
     } else {