Add test for parameters without ()

Author: fisker

tests/transform.test.ts

@@ -505,6 +505,11 @@ const testCases: TestCase[] = [
     expectedEstreeType: 'ArrowFunctionExpression',
     text: ' ( ( () => ( ( 1 ) ) ) ) ',
   },
+  {
+    expectedAngularType: 'ArrowFunction',
+    expectedEstreeType: 'ArrowFunctionExpression',
+    text: ' ( ( a => ( ( 1 ) ) ) ) ',
+  },
   {
     expectedAngularType: 'ArrowFunction',
     expectedEstreeType: 'ArrowFunctionExpression',