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67ca49488f
Another step in the direction of improving node tests and using type-correct organic data as much as possible.
94 lines
2.8 KiB
JavaScript
94 lines
2.8 KiB
JavaScript
"use strict";
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const assert = require("node:assert/strict");
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const {make_realm} = require("./lib/example_realm.cjs");
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const {make_stream} = require("./lib/example_stream.cjs");
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const {make_message_list} = require("./lib/message_list.cjs");
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const {zrequire} = require("./lib/namespace.cjs");
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const {run_test} = require("./lib/test.cjs");
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// In the Zulip app you can narrow your message stream by topic, by
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// sender, by direct message recipient, by search keywords, etc.
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// We will discuss narrows more broadly, but first let's test out a
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// core piece of code that makes things work.
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const {Filter} = zrequire("../src/filter");
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const {set_realm} = zrequire("state_data");
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const stream_data = zrequire("stream_data");
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set_realm(make_realm());
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const denmark_stream = make_stream({
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color: "blue",
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name: "Denmark",
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stream_id: 101,
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subscribed: false,
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});
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run_test("filter", () => {
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stream_data.clear_subscriptions();
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stream_data.add_sub(denmark_stream);
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const filter_terms = [
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{operator: "stream", operand: denmark_stream.stream_id.toString()},
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{operator: "topic", operand: "copenhagen"},
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];
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const filter = new Filter(filter_terms);
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const predicate = filter.predicate();
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// We don't need full-fledged messages to test the gist of
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// our filter. If there are details that are distracting from
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// your test, you should not feel guilty about removing them.
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assert.equal(predicate({type: "personal"}), false);
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assert.equal(
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predicate({
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type: "stream",
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stream_id: denmark_stream.stream_id,
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topic: "does not match filter",
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}),
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false,
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);
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assert.equal(
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predicate({
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type: "stream",
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stream_id: denmark_stream.stream_id,
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topic: "copenhagen",
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}),
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true,
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);
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});
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// We have a "narrow" abstraction that sits roughly on top of the
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// "filter" abstraction. If you are in a narrow, we track the
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// state with the narrow_state module.
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const narrow_state = zrequire("narrow_state");
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const message_lists = zrequire("message_lists");
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run_test("narrow_state", () => {
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stream_data.clear_subscriptions();
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stream_data.add_sub(denmark_stream);
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message_lists.set_current(undefined);
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// As we often do, first make assertions about the starting
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// state:
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assert.equal(narrow_state.stream_name(), undefined);
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// Now set up a Filter object.
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const filter_terms = [
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{operator: "stream", operand: denmark_stream.stream_id.toString()},
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{operator: "topic", operand: "copenhagen"},
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];
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// And here is where we actually change state.
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message_lists.set_current(make_message_list(filter_terms));
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assert.equal(narrow_state.stream_name(), "Denmark");
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assert.equal(narrow_state.topic(), "copenhagen");
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});
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