test: exact-delta assertions for tail -f follow/stop semantics

1 files changed, 2 insertions, 1 deletions

diff --git a/scripts/test-fs-commands.mjs b/scripts/test-fs-commands.mjs
index 6f87708..72f81ae 100644
--- a/scripts/test-fs-commands.mjs
+++ b/scripts/test-fs-commands.mjs
@@ -129,9 +129,10 @@ const L12 = ['l1','l2','l3','l4','l5','l6','l7','l8','l9','l10','l11','l12'].joi
     await sleep(1700);
     check('tail -f prints appended line', out.some(o => o.text === '\nc'), out.map(o => o.text));
     check('tail -f stopFollow clears', terminal.stopFollow() === true && terminal._activeFollow === null);
+    const baseline = out.length;
     ctx.__test.files.set('log.txt', 'a\nb\nc\nd');
     await sleep(1700);
-    check('no output after stopFollow', !out.some(o => o.text.includes('d')), out.map(o => o.text));
+    check('no output after stopFollow', out.length === baseline, out.slice(baseline).map(o => o.text));
 }
 {
     const { mod, terminal, out, ctx } = scenario({ 'log.txt': 'aaaa' });