1 files changed, 7 insertions, 0 deletions
diff --git a/crates/chat-server/tests/browser.mjs b/crates/chat-server/tests/browser.mjs
index 7a359e7..b0a9041 100644
--- a/crates/chat-server/tests/browser.mjs
+++ b/crates/chat-server/tests/browser.mjs
@@ -163,6 +163,13 @@ async function create(page, name, owner = false) {
     await page.click('#create-form button');
     const download = await downloaded;
     const bytes = await readFile(await download.path());
+    const envelope = JSON.parse(bytes.toString());
+    assert.ok(envelope.format.startsWith('stack-chat-file/v2;'));
+    assert.ok(bytes.toString().startsWith('{\n  "format"'));
+    assert.ok(Array.isArray(envelope.ciphertext));
+    assert.ok(envelope.ciphertext.length > 1);
+    assert.ok(envelope.ciphertext.slice(0,-1).every(chunk => chunk.length === 80));
+    assert.ok(envelope.ciphertext.at(-1).length > 0 && envelope.ciphertext.at(-1).length <= 80);
     await waitStatus(page,'Reopen your downloaded');
     assert.equal(await page.locator('#chat').isVisible(), false);
     assert.equal(bodies.filter(body => body.op === 'authenticate').length,previousAuthentications);