1 files changed, 14 insertions, 0 deletions
diff --git a/tools/ln-receive-twin-test.js b/tools/ln-receive-twin-test.js
index 20d4f48..167a26b 100644
--- a/tools/ln-receive-twin-test.js
+++ b/tools/ln-receive-twin-test.js
@@ -35,5 +35,19 @@ f = lnFoldedIds([rcv('A', 1000, T), { ...rcv('B', 1000, T + 2000), vtxoId: 'v-A'
 check('...or the earliest when none is tagged', f.size === 1 && f.has('B'));
 f = lnFoldedIds([rcv('A', 1000, T), rcv('B', 1000, T + 2000)]);
 check('two coins of the same amount stay two rows', f.size === 0);
+// a Lightning payment the closed app's worker made: its own ln-send row
+// (merged from the mirror) plus the app's "while closed" note of the same
+// preimage — one row, the one that names its inputs
+const snd = (id, ts, extra = {}) => ({ id, type: 'ln-send', status: 'complete', amountSat: 1, ts, ...extra });
+f = lnFoldedIds([snd('W', T, { preimage: 'pi1', paymentHash: 'h1', inputIds: ['v1'] }), snd('N', T + 60_000, { preimage: 'pi1', detail: 'while closed · fee 0 sat' })]);
+check('a closed-app payment told twice shows once, the row with inputs', f.size === 1 && f.has('N'));
+f = lnFoldedIds([snd('N', T, { preimage: 'pi1' }), snd('W', T + 5000, { preimage: 'pi1', paymentHash: 'h1', inputIds: ['v1'] })]);
+check('...whichever order they were written', f.size === 1 && f.has('N'));
+f = lnFoldedIds([snd('W', T, { paymentHash: 'h1', preimage: 'pi1', inputIds: ['v1'] }), snd('N', T + 1000, { paymentHash: 'h1' })]);
+check('...matched by payment hash when the note has no preimage', f.size === 1 && f.has('N'));
+f = lnFoldedIds([snd('A', T, { preimage: 'pi1', inputIds: ['v1'] }), snd('B', T + 1000, { preimage: 'pi2', inputIds: ['v2'] })]);
+check('two payments stay two rows', f.size === 0);
+f = lnFoldedIds([snd('A', T, { preimage: 'pi1' }), snd('B', T + 1000, { preimage: 'pi1' })]);
+check('two notes with no inputs keep the earliest', f.size === 1 && f.has('B'));
 console.log(ok ? '\n✅ a claimed LN receive is told once' : '\n❌ failed');
 process.exit(ok ? 0 : 1);