zulip/web/tests/example3.test.js

98 lines
2.8 KiB
JavaScript

"use strict";
const {strict: assert} = require("assert");
const {zrequire} = require("./lib/namespace");
const {run_test} = require("./lib/test");
const {page_params} = require("./lib/zpage_params");
// In the Zulip app you can narrow your message stream by topic, by
// sender, by PM recipient, by search keywords, etc. We will discuss
// narrows more broadly, but first let's test out a core piece of
// code that makes things work.
const {Filter} = zrequire("../src/filter");
const stream_data = zrequire("stream_data");
// This is the first time we have to deal with page_params.
// page_params has a lot of important data shared by various
// modules. Most of the data is irrelevant to our tests.
// Use this to explicitly say we are not a special Zephyr
// realm, since we want to test the "normal" codepath.
page_params.realm_is_zephyr_mirror_realm = false;
const denmark_stream = {
color: "blue",
name: "Denmark",
stream_id: 101,
subscribed: false,
};
run_test("filter", () => {
stream_data.clear_subscriptions();
stream_data.add_sub(denmark_stream);
const filter_terms = [
{operator: "stream", operand: "Denmark"},
{operator: "topic", operand: "copenhagen"},
];
const filter = new Filter(filter_terms);
const predicate = filter.predicate();
// We don't need full-fledged messages to test the gist of
// our filter. If there are details that are distracting from
// your test, you should not feel guilty about removing them.
assert.equal(predicate({type: "personal"}), false);
assert.equal(
predicate({
type: "stream",
stream_id: denmark_stream.stream_id,
topic: "does not match filter",
}),
false,
);
assert.equal(
predicate({
type: "stream",
stream_id: denmark_stream.stream_id,
topic: "copenhagen",
}),
true,
);
});
// We have a "narrow" abstraction that sits roughly on top of the
// "filter" abstraction. If you are in a narrow, we track the
// state with the narrow_state module.
const narrow_state = zrequire("narrow_state");
run_test("narrow_state", () => {
stream_data.clear_subscriptions();
stream_data.add_sub(denmark_stream);
narrow_state.reset_current_filter();
// As we often do, first make assertions about the starting
// state:
assert.equal(narrow_state.stream(), undefined);
// Now set up a Filter object.
const filter_terms = [
{operator: "stream", operand: "Denmark"},
{operator: "topic", operand: "copenhagen"},
];
const filter = new Filter(filter_terms);
// And here is where we actually change state.
narrow_state.set_current_filter(filter);
assert.equal(narrow_state.stream(), "Denmark");
assert.equal(narrow_state.topic(), "copenhagen");
});