Minor fix

jazz-soft · Mar 25, 2024 · 308cd56 · 308cd56
1 parent 8c309e4
commit 308cd56
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diff --git a/javascript/JZZ.midi.SMF.js b/javascript/JZZ.midi.SMF.js
@@ -799,6 +799,7 @@
     catch (e) {
       for (i = 0; i < msg.length; i++) a.push(JZZ.MIDI(msg[i]));
     }
+    if (!a.length) _error('Not a MIDI message');
     for (i = 0; i < a.length; i++) _msg(a[i]);
     if (this[this._orig.length - 1].tt < t) this[this._orig.length - 1].tt = t; // end of track
     if (msg.ff == 0x2f || msg[0] > 0xf0 && msg[0] != 0xf7) return this;

diff --git a/test/mocha.js b/test/mocha.js
@@ -116,6 +116,7 @@ describe('functions', function() {
     assert.throws(function() { trk.add(0); });
     assert.throws(function() { trk.add(0, 'dummy'); });
     assert.throws(function() { trk.add(0, []); });
+    assert.throws(function() { trk.add(0, {}); });
     assert.throws(function() { trk.add(0, [[0x80, 0, 0], []]); });
     assert.throws(function() { trk.tick(); });
     assert.throws(function() { trk.ch(-1); });