it.should("listen once to an event", function () {
var ret = new comb.Promise(), called = 0;
db.listenOnce("myChannel").chain(function (payload) {
assert.equal(payload, "hello1");
called++;
ret.callback();
});
return when(
db.notify("myChannel", "hello1"),
db.notify("myChannel", "hello2"),
db.notify("myChannel", "hello3"),
ret
).chain(function () {
assert.equal(called, 1);
called = 0;
db.listenOnce("myChannel").chain(function (payload) {
assert.equal(payload, "hello1");
called++;
});
return db.notify("myChannel", "hello1")
.chain(function () {
return db.notify("myChannel", "hello2");
})
.chain(function () {
return db.notify("myChannel", "hello3");
})
.chain(function () {
assert.equal(called, 1);
});
});
});
db.listen("myChannel", function (msg) {
try {
assert.deepEqual(msg, {msg: "hello"});
db.unListen("myChannel").chain(function () {
assert.deepEqual(db.sqls, ['LISTEN my_channel', "NOTIFY my_channel , '{\"msg\":\"hello\"}'", "UNLISTEN my_channel"]);
assert.deepEqual(db.__listeners, {});
ret.callback();
}).addErrback(ret);
} catch (e) {
ret.errback(e);
}
}).chain(function () {
it.should("listen to a channel", function () {
var ret = new comb.Promise();
db.listen("myChannel", function (msg) {
try {
assert.deepEqual(msg, {msg: "hello"});
db.unListen("myChannel").chain(function () {
assert.deepEqual(db.sqls, ['LISTEN my_channel', "NOTIFY my_channel , '{\"msg\":\"hello\"}'", "UNLISTEN my_channel"]);
assert.deepEqual(db.__listeners, {});
ret.callback();
}).addErrback(ret);
} catch (e) {
ret.errback(e);
}
}).chain(function () {
assert.isTrue("my_channel" in db.__listeners);
assert.deepEqual(db.sqls, ['LISTEN my_channel']);
return db.notify("myChannel", {msg: "hello"});
}).addErrback(ret);
return ret;
});
db.listenOnce("myChannel").chain(function (payload) {
assert.equal(payload, "hello1");
called++;
ret.callback();
});
db.unListen("myChannel").chain(function () {
assert.deepEqual(db.sqls, ['LISTEN my_channel', "NOTIFY my_channel , '{\"msg\":\"hello\"}'", "UNLISTEN my_channel"]);
assert.deepEqual(db.__listeners, {});
ret.callback();
}).addErrback(ret);