1 files changed, 17 insertions, 0 deletions
diff --git a/tools/post-cancel-test.js b/tools/post-cancel-test.js
new file mode 100644
index 0000000..5527bf2
--- /dev/null
+++ b/tools/post-cancel-test.js
@@ -0,0 +1,17 @@
+// Canceling a new post closes the composer and discards every part of its
+// saved state, including a late attachment result.
+import assert from 'node:assert/strict';
+
+const source = await Bun.file('src/features/messages.js').text();
+const start = source.indexOf('function cancelPost()');
+const end = source.indexOf('\n  }', start);
+const cancel = source.slice(start, end);
+assert(start > 0, 'post cancel handler exists');
+assert(cancel.includes('postAttachGeneration++'), 'late uploads are invalidated');
+assert(cancel.includes('ui.profCompose = null'), 'composer is closed');
+assert(cancel.includes('ui.postMedia = []'), 'pending attachment metadata is removed');
+assert(cancel.includes('ui.postPreview = false'), 'preview state is removed');
+assert(cancel.includes('discardDraft(POST_DRAFT)'), 'persisted draft is removed immediately');
+assert(source.includes("onClick: cancelPost }, t('cancel')"), 'Cancel button uses the discard handler');
+
+console.log('✓ Cancel closes the new-post form and removes its complete saved draft');