mirror of https://github.com/zulip/zulip.git
134 lines
3.7 KiB
JavaScript
134 lines
3.7 KiB
JavaScript
var tg = require('js/topic_generator.js');
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function is_even(i) { return i % 2 === 0; }
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function is_odd(i) { return i % 2 === 1; }
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(function test_basics() {
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var gen = tg.list_generator([10, 20, 30]);
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assert.equal(gen.next(), 10);
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assert.equal(gen.next(), 20);
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assert.equal(gen.next(), 30);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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var gen1 = tg.list_generator([100, 200]);
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var gen2 = tg.list_generator([300, 400]);
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var outers = [gen1, gen2];
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gen = tg.chain(outers);
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assert.equal(gen.next(), 100);
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assert.equal(gen.next(), 200);
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assert.equal(gen.next(), 300);
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assert.equal(gen.next(), 400);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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gen = tg.wrap([5, 15, 25, 35], 25);
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assert.equal(gen.next(), 25);
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assert.equal(gen.next(), 35);
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assert.equal(gen.next(), 5);
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assert.equal(gen.next(), 15);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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gen = tg.wrap_exclude([5, 15, 25, 35], 25);
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assert.equal(gen.next(), 35);
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assert.equal(gen.next(), 5);
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assert.equal(gen.next(), 15);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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gen = tg.wrap([5, 15, 25, 35], undefined);
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assert.equal(gen.next(), 5);
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gen = tg.wrap_exclude([5, 15, 25, 35], undefined);
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assert.equal(gen.next(), 5);
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gen = tg.wrap([5, 15, 25, 35], 17);
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assert.equal(gen.next(), 5);
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gen = tg.wrap([], 42);
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assert.equal(gen.next(), undefined);
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var ints = tg.list_generator([1, 2, 3, 4, 5]);
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gen = tg.filter(ints, is_even);
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assert.equal(gen.next(), 2);
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assert.equal(gen.next(), 4);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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ints = tg.list_generator([]);
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gen = tg.filter(ints, is_even);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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}());
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(function test_fchain() {
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var mults = function (n) {
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var ret = 0;
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return {
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next: function () {
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ret += n;
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return (ret <= 100) ? ret : undefined;
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},
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};
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};
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var ints = tg.list_generator([29, 43]);
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var gen = tg.fchain(ints, mults);
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assert.equal(gen.next(), 29);
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assert.equal(gen.next(), 58);
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assert.equal(gen.next(), 87);
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assert.equal(gen.next(), 43);
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assert.equal(gen.next(), 86);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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ints = tg.wrap([33, 34, 37], 37);
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ints = tg.filter(ints, is_odd);
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gen = tg.fchain(ints, mults);
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assert.equal(gen.next(), 37);
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assert.equal(gen.next(), 74);
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assert.equal(gen.next(), 33);
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assert.equal(gen.next(), 66);
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assert.equal(gen.next(), 99);
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assert.equal(gen.next(), undefined);
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assert.equal(gen.next(), undefined);
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}());
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(function test_topics() {
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var streams = [1, 2, 3, 4];
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var topics = {};
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topics[1] = ['read', 'read', '1a', '1b', 'read', '1c'];
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topics[2] = [];
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topics[3] = ['3a', 'read', 'read', '3b', 'read'];
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topics[4] = ['4a'];
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function has_unread_messages(stream, topic) {
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return topic !== 'read';
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}
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function get_topics(stream) {
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return topics[stream];
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}
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function next_topic(curr_stream, curr_topic) {
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return tg.next_topic(
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streams,
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get_topics,
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has_unread_messages,
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curr_stream,
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curr_topic);
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}
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assert.equal(next_topic(1, '1a'), '1b');
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assert.equal(next_topic(1, undefined), '1a');
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assert.equal(next_topic(2, 'bogus'), '3a');
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assert.equal(next_topic(3, '3b'), '3a');
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assert.equal(next_topic(4, '4a'), '1a');
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assert.equal(next_topic(undefined, undefined), '1a');
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}());
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