test('Snippet placeholder index incorrect after using 2+ snippets in a row that each end with a placeholder, #30769', function () {
editor.getModel().setValue('');
editor.setSelection(new Selection(1, 1, 1, 1));
const session = new SnippetSession(editor, 'test ${1:replaceme}');
session.insert();
editor.trigger('test', 'type', { text: '1' });
editor.trigger('test', 'type', { text: '\n' });
assert.equal(editor.getModel().getValue(), 'test 1\n');
session.merge('test ${1:replaceme}');
editor.trigger('test', 'type', { text: '2' });
editor.trigger('test', 'type', { text: '\n' });
assert.equal(editor.getModel().getValue(), 'test 1\ntest 2\n');
session.merge('test ${1:replaceme}');
editor.trigger('test', 'type', { text: '3' });
editor.trigger('test', 'type', { text: '\n' });
assert.equal(editor.getModel().getValue(), 'test 1\ntest 2\ntest 3\n');
session.merge('test ${1:replaceme}');
editor.trigger('test', 'type', { text: '4' });
editor.trigger('test', 'type', { text: '\n' });
assert.equal(editor.getModel().getValue(), 'test 1\ntest 2\ntest 3\ntest 4\n');
});
test('snippets, merge', function () {
editor.setSelection(new Selection(1, 1, 1, 1));
const session = new SnippetSession(editor, 'This ${1:is ${2:nested}}.$0');
session.insert();
session.next();
assertSelections(editor, new Selection(1, 9, 1, 15));
session.merge('really ${1:nested}$0');
assertSelections(editor, new Selection(1, 16, 1, 22));
session.next();
assertSelections(editor, new Selection(1, 22, 1, 22));
assert.equal(session.isAtLastPlaceholder, false);
session.next();
assert.equal(session.isAtLastPlaceholder, true);
assertSelections(editor, new Selection(1, 23, 1, 23));
session.prev();
editor.trigger('test', 'type', { text: 'AAA' });
// back to `really ${1:nested}`
session.prev();
assertSelections(editor, new Selection(1, 16, 1, 22));
// back to `${1:is ...}` which now grew
session.prev();
assertSelections(editor, new Selection(1, 6, 1, 25));
});