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[Core] Add test case for shared listener

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Add test case for sharing listeners across mutation
capability instances, WTD-1329.
This commit is contained in:
Victor Woeltjen 2015-06-24 12:12:50 -07:00
parent 877461c4a4
commit e0f672d40d
2 changed files with 25 additions and 15 deletions
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19
platform/core/src/capabilities/MutationCapability.js
View File

@ -29,6 +29,8 @@ define(
function () {
"use strict";
var TOPIC_PREFIX = "mutation:";
// Utility function to overwrite a destination object
// with the contents of a source object.
function copyValues(destination, source) {
@ -72,13 +74,7 @@ define(
* @constructor
*/
function MutationCapability(topic, now, domainObject) {
var listeners = [];
function notifyListeners(model) {
listeners.forEach(function (listener) {
listener(model);
});
}
var t = topic(TOPIC_PREFIX + domainObject.getId());
function mutate(mutator, timestamp) {
// Get the object's model and clone it, so the
@ -103,7 +99,7 @@ define(
copyValues(model, result);
}
model.modified = useTimestamp ? timestamp : now();
notifyListeners(model);
t.notify(model);
}
// Report the result of the mutation
@ -116,12 +112,7 @@ define(
}
function listen(listener) {
listeners.push(listener);
return function unlisten() {
listeners = listeners.filter(function (l) {
return l !== listener;
});
};
return t.listen(listener);
}
return {

21
platform/core/test/capabilities/MutationCapabilitySpec.js
View File

@ -36,7 +36,10 @@ define(
var testModel,
topic,
mockNow,
domainObject = { getModel: function () { return testModel; } },
domainObject = {
getId: function () { return "test-id"; },
getModel: function () { return testModel; }
},
mutation;
beforeEach(function () {
@ -112,6 +115,22 @@ define(
});
expect(mockCallback).not.toHaveBeenCalled();
});
it("shares listeners across instances", function () {
var mockCallback = jasmine.createSpy('callback'),
otherMutation = new MutationCapability(
topic,
mockNow,
domainObject
);
mutation.listen(mockCallback);
otherMutation.invoke(function (m) {
m.number = 8;
});
expect(mockCallback).toHaveBeenCalled();
expect(mockCallback.mostRecentCall.args[0].number)
.toEqual(8);
});
});
}
);