gistfile1.js

/* Desired format for test */
test("Foo test", function() {
  var obj = document.getFooObject();
  if (ok(obj.someMethod, "FooObject implements <someMethod>")) {
    var result = obj.someMethod();
    equal(result.length, 42, "Result has proper length");
    equal(result.bar, "BAZ", "The bar is where it should be");
  }
})

/* This gets currently written as such */

test("Foo test", function() {
  var obj = document.getFooObject();
  ok(obj.someMethod, "FooObject implements <someMethod>");

  var methodSupported = !!obj.someMethod;
  if (methodSupported) {
    var result = obj.someMethod();
    equal(result.length, 42, "Result has proper length");
    equal(result.bar, "BAZ", "The bar is where it should be");
  }
})