LibJS: Allow try statement with only finally clause

This was a regression introduced by 9ffe45b - a TryStatement without
'catch' clause *is* allowed, if it has a 'finally' clause. It is now
checked properly that at least one of both is present.

1 files changed, 9 insertions, 0 deletions

diff --git a/Libraries/LibJS/Tests/try-catch-finally.js b/Libraries/LibJS/Tests/try-catch-finally.js
index 7aca91c500..1ff0104734 100644
--- a/Libraries/LibJS/Tests/try-catch-finally.js
+++ b/Libraries/LibJS/Tests/try-catch-finally.js
@@ -161,3 +161,12 @@ test("try/catch/finally with exception in try, catch and finally", () => {
     expect(catchHasBeenExecuted).toBeTrue();
     expect(finallyHasBeenExecuted).toBeTrue();
 });
+
+test("try statement must have either 'catch' or 'finally' clause", () => {
+    expect("try {} catch {}").toEval();
+    expect("try {} catch (e) {}").toEval();
+    expect("try {} finally {}").toEval();
+    expect("try {} catch {} finally {}").toEval();
+    expect("try {} catch (e) {} finally {}").toEval();
+    expect("try {}").not.toEval();
+});