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/* ... */
this.observable.observe("event", observer1);
this.observable.observe("event", observer2);
/* ... */
},
"test should pass through arguments": function () {
/* ... */
this.observable.observe("event", function () {
actual = arguments;
});
/* ... */
},
"test should notify all even when some fail": function () {
/* ... */
this.observable.observe("event", observer1);
this.observable.observe("event", observer2);
/* ... */
},
"test should call observers in the order they were added":
function () {
/* ... */
this.observable.observe("event", observer1);
this.observable.observe("event", observer2);
/* ... */
},
/* ... */
});
Unsurprisingly, this causes all the tests to fail as
observe
throws an exception,
because the argument it thinks is the observer is not a function. To get tests back to
green we simply add a formal parameter to
observe
, as seen in Listing 11.43.
Listing 11.43
Adding a formal
event
parameter to
observe
function observe(event, observer) {
/* ... */
}
We will repeat this exercise with both
hasObserver
and
notify
as well, to
make room for tests that describe actual functionality. I will leave updating these
