zulip/zerver/tests/frontend/node/message_list.js

113 lines
2.5 KiB
JavaScript

// These unit tests for static/js/message_list.js emphasize the model-ish
// aspects of the MessageList class. We have to stub out a few functions
// related to views and events to get the tests working.
var assert = require('assert');
(function set_up_dependencies () {
global.document = null;
global.$ = function () {
return {
on: function () {},
trigger: function () {}
};
};
global._ = require('third/underscore/underscore.js');
global.util = require('js/util.js');
global.feature_flags = {};
}());
var MessageList = require('js/message_list');
(function test_basics() {
var table;
var filter = {};
var list = new MessageList(table, filter);
var messages = [
{
id: 50,
content: 'fifty'
},
{
id: 60
},
{
id: 70
},
{
id: 80
}
];
assert.equal(list.empty(), true);
list.append(messages, true);
assert.equal(list.empty(), false);
assert.equal(list.first().id, 50);
assert.equal(list.last().id, 80);
assert.equal(list.get(50).content, 'fifty');
assert.equal(list.closest_id(49), 50);
assert.equal(list.closest_id(50), 50);
assert.equal(list.closest_id(51), 50);
assert.equal(list.closest_id(59), 60);
assert.equal(list.closest_id(60), 60);
assert.equal(list.closest_id(61), 60);
assert.deepEqual(list.all(), messages);
global.$.Event = function (ev) {
assert.equal(ev, 'message_selected.zulip');
};
list.select_id(50);
assert.equal(list.selected_id(), 50);
list.advance_past_messages([60, 80]);
assert.equal(list.selected_id(), 60);
var old_messages = [
{
id: 30
},
{
id: 40
}
];
list.prepend(old_messages, true);
assert.equal(list.first().id, 30);
assert.equal(list.last().id, 80);
var new_messages = [
{
id: 90
}
];
list.append(new_messages, true);
assert.equal(list.last().id, 90);
list._clear_table = function () {};
list.clear();
assert.deepEqual(list.all(), []);
}());
(function test_nth_most_recent_id() {
var table;
var filter = {};
var list = new MessageList(table, filter);
list.append([{id:10}, {id:20}, {id:30}]);
assert.equal(list.nth_most_recent_id(1), 30);
assert.equal(list.nth_most_recent_id(2), 20);
assert.equal(list.nth_most_recent_id(3), 10);
assert.equal(list.nth_most_recent_id(4), -1);
}());