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https://github.com/zulip/zulip.git
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017bca56e4
We're going to need to be able to build the message list view in pieces and put it all together in the end, instead of assigning values directly to a half-formed object (which is hard to type). This is part of the work towards that.
877 lines
33 KiB
JavaScript
877 lines
33 KiB
JavaScript
"use strict";
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const {strict: assert} = require("assert");
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const _ = require("lodash");
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const {mock_esm, set_global, zrequire} = require("./lib/namespace");
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const {run_test, noop} = require("./lib/test");
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const $ = require("./lib/zjquery");
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set_global("document", "document-stub");
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// timerender calls setInterval when imported
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mock_esm("../src/timerender", {
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render_date(time) {
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return [{outerHTML: String(time.getTime())}];
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},
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stringify_time(time) {
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return time.toString("h:mm TT");
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},
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});
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mock_esm("../src/people", {
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sender_is_bot: () => false,
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sender_is_guest: () => false,
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should_add_guest_user_indicator: () => false,
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small_avatar_url: () => "fake/small/avatar/url",
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});
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const {Filter} = zrequire("../src/filter");
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const {MessageListView} = zrequire("../src/message_list_view");
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const message_list = zrequire("message_list");
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const muted_users = zrequire("muted_users");
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let next_timestamp = 1500000000;
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function test(label, f) {
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run_test(label, ({override, mock_template}) => {
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muted_users.set_muted_users([]);
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mock_template("message_list.hbs", false, () => "<message-list-stub>");
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f({override, mock_template});
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});
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}
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test("msg_moved_var", () => {
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// This is a test to verify that when the stream or topic is changed
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// (and the content is not), the message says "MOVED" rather than "EDITED."
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// See the end of the test for the list of cases verified.
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function build_message_context(message = {}, message_context = {}) {
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message_context = {
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...message_context,
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};
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if ("edit_history" in message) {
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message_context.msg = {
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last_edit_timestamp: (next_timestamp += 1),
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...message,
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};
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} else {
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message_context.msg = {
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...message,
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};
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}
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return message_context;
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}
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function build_message_group(messages) {
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return {message_containers: messages};
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}
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function build_list(message_groups) {
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const list = new MessageListView(
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{
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id: 1,
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},
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true,
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true,
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);
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list._message_groups = message_groups;
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return list;
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}
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function assert_moved_true(message_container) {
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assert.equal(message_container.moved, true);
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}
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function assert_moved_false(message_container) {
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assert.equal(message_container.moved, false);
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}
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function assert_moved_undefined(message_container) {
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assert.equal(message_container.moved, undefined);
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}
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(function test_msg_moved_var() {
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const messages = [
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// no edit history: NO LABEL
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build_message_context({}),
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// stream changed: MOVED
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build_message_context({
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edit_history: [{prev_stream: 1, timestamp: 1000, user_id: 1}],
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}),
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// topic changed (not resolved/unresolved): MOVED
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build_message_context({
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edit_history: [
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{prev_topic: "test_topic", topic: "new_topic", timestamp: 1000, user_id: 1},
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],
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}),
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// content edited: EDITED
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build_message_context({
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edit_history: [{prev_content: "test_content", timestamp: 1000, user_id: 1}],
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}),
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// stream and topic edited: MOVED
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build_message_context({
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edit_history: [
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{
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prev_stream: 1,
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prev_topic: "test_topic",
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topic: "new_topic",
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timestamp: 1000,
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user_id: 1,
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},
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],
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}),
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// topic and content changed: EDITED
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build_message_context({
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edit_history: [
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{
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prev_topic: "test_topic",
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topic: "new_topic",
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prev_content: "test_content",
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timestamp: 1000,
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user_id: 1,
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},
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],
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}),
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// only topic resolved: NO LABEL
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build_message_context({
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edit_history: [
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{prev_topic: "test_topic", topic: "✔ test_topic", timestamp: 1000, user_id: 1},
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],
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}),
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// only topic unresolved: NO LABEL
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build_message_context({
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edit_history: [
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{prev_topic: "✔ test_topic", topic: "test_topic", timestamp: 1000, user_id: 1},
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],
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}),
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// multiple edit history logs, with at least one content edit: EDITED
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build_message_context({
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edit_history: [
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{prev_stream: 1, timestamp: 1000, user_id: 1},
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{prev_topic: "old_topic", topic: "test_topic", timestamp: 1001, user_id: 1},
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{prev_content: "test_content", timestamp: 1002, user_id: 1},
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{prev_topic: "test_topic", topic: "✔ test_topic", timestamp: 1003, user_id: 1},
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],
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}),
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// multiple edit history logs with no content edit: MOVED
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build_message_context({
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edit_history: [
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{prev_stream: 1, timestamp: 1000, user_id: 1},
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{prev_topic: "old_topic", topic: "test_topic", timestamp: 1001, user_id: 1},
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{prev_topic: "test_topic", topic: "✔ test_topic", timestamp: 1002, user_id: 1},
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{prev_topic: "✔ test_topic", topic: "test_topic", timestamp: 1003, user_id: 1},
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],
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}),
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];
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const message_group = build_message_group(messages);
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const list = build_list([message_group]);
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for (const message_container of messages) {
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Object.assign(
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message_container,
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list._maybe_get_me_message(message_container.is_hidden, message_container.msg),
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);
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list._add_msg_edited_vars(message_container);
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}
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const result = list._message_groups[0].message_containers;
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// no edit history: undefined
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assert_moved_undefined(result[0]);
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// stream changed: true
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assert_moved_true(result[1]);
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// topic changed: true
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assert_moved_true(result[2]);
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// content edited: false
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assert_moved_false(result[3]);
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// stream and topic edited: true
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assert_moved_true(result[4]);
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// topic and content changed: false
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assert_moved_false(result[5]);
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// only topic resolved: undefined
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assert_moved_undefined(result[6]);
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// only topic unresolved: undefined
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assert_moved_undefined(result[7]);
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// multiple edits with content edit: false
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assert_moved_false(result[8]);
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// multiple edits without content edit: true
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assert_moved_true(result[9]);
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})();
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});
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test("msg_edited_vars", () => {
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// This is a test to verify that only one of the three bools,
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// `message_edit_notices_in_left_col`, `message_edit_notices_alongside_sender`,
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// `message_edit_notices_for_status_message` is not false; Tests for three
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// different kinds of messages:
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// * "/me" message
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// * message that includes sender
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// * message without sender
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function build_message_context(message = {}, message_context = {}) {
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message_context = {
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include_sender: true,
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...message_context,
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};
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message_context.msg = {
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is_me_message: false,
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last_edit_timestamp: (next_timestamp += 1),
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edit_history: [{prev_content: "test_content", timestamp: 1000, user_id: 1}],
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...message,
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};
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return message_context;
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}
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function build_message_group(messages) {
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return {message_containers: messages};
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}
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function build_list(message_groups) {
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const list = new MessageListView(
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{
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id: 1,
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},
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true,
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true,
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);
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list._message_groups = message_groups;
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return list;
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}
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function assert_left_col(message_container) {
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assert.equal(message_container.modified, true);
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assert.equal(message_container.message_edit_notices_in_left_col, true);
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assert.equal(message_container.message_edit_notices_alongside_sender, false);
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assert.equal(message_container.message_edit_notices_for_status_message, false);
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}
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function assert_alongside_sender(message_container) {
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assert.equal(message_container.modified, true);
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assert.equal(message_container.message_edit_notices_in_left_col, false);
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assert.equal(message_container.message_edit_notices_alongside_sender, true);
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assert.equal(message_container.message_edit_notices_for_status_message, false);
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}
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function assert_status_msg(message_container) {
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assert.equal(message_container.modified, true);
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assert.equal(message_container.message_edit_notices_in_left_col, false);
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assert.equal(message_container.message_edit_notices_alongside_sender, false);
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assert.equal(message_container.message_edit_notices_for_status_message, true);
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}
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function set_edited_notice_locations(message_container) {
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const include_sender = message_container.include_sender;
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const is_hidden = message_container.is_hidden;
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const status_message = Boolean(message_container.status_message);
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message_container.message_edit_notices_in_left_col = !include_sender && !is_hidden;
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message_container.message_edit_notices_alongside_sender = include_sender && !status_message;
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message_container.message_edit_notices_for_status_message =
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include_sender && status_message;
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}
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(function test_msg_edited_vars() {
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const messages = [
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build_message_context(),
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build_message_context({}, {include_sender: false}),
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build_message_context({is_me_message: true, content: "<p>/me test</p>"}),
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];
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const message_group = build_message_group(messages);
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const list = build_list([message_group]);
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for (const message_container of messages) {
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Object.assign(
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message_container,
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list._maybe_get_me_message(message_container.is_hidden, message_container.msg),
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);
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list._add_msg_edited_vars(message_container);
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}
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const result = list._message_groups[0].message_containers;
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set_edited_notice_locations(result[0]);
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assert_alongside_sender(result[0]);
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set_edited_notice_locations(result[1]);
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assert_left_col(result[1]);
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set_edited_notice_locations(result[2]);
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assert_status_msg(result[2]);
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})();
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});
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test("muted_message_vars", () => {
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// This verifies that the variables for muted/hidden messages are set
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// correctly.
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function build_message_context(message = {}, message_context = {}) {
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message_context = {
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...message_context,
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};
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message_context.msg = {
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...message,
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};
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return message_context;
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}
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function build_message_group(messages) {
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return {message_containers: messages};
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}
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function build_list(message_groups) {
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const list = new MessageListView(
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{
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id: 1,
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},
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true,
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true,
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);
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list._message_groups = message_groups;
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return list;
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}
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function calculate_variables(list, messages, is_revealed) {
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list.set_calculated_message_container_variables(messages[0], is_revealed);
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list.set_calculated_message_container_variables(messages[1], is_revealed);
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list.set_calculated_message_container_variables(messages[2], is_revealed);
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return list._message_groups[0].message_containers;
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}
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(function test_hidden_message_variables() {
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// We want to have no search results, which apparently works like this.
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// See https://chat.zulip.org/#narrow/channel/6-frontend/topic/set_find_results.20with.20no.20results/near/1414799
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const empty_list_stub = $.create("empty-stub", {children: []});
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$("<message-stub-1>").set_find_results(".user-mention:not(.silent)", empty_list_stub);
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$("<message-stub2>").set_find_results(".user-mention:not(.silent)", empty_list_stub);
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$("<message-stub-3>").set_find_results(".user-mention:not(.silent)", empty_list_stub);
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// Make a representative message group of three messages.
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const messages = [
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build_message_context(
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{sender_id: 10, content: "<message-stub-1>"},
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{include_sender: true},
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),
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build_message_context(
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{mentioned: true, sender_id: 10, content: "<message-stub2>"},
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{include_sender: false},
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),
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build_message_context(
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{sender_id: 10, content: "<message-stub-3>"},
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{include_sender: false},
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),
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];
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const message_group = build_message_group(messages);
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const list = build_list([message_group]);
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list._add_msg_edited_vars = noop;
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// Sender is not muted.
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let result = calculate_variables(list, messages);
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// sanity check on mocked values
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assert.equal(result[1].sender_is_bot, false);
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assert.equal(result[1].sender_is_guest, false);
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assert.equal(result[1].small_avatar_url, "fake/small/avatar/url");
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// Check that `is_hidden` is false on all messages, and `include_sender` has not changed.
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assert.equal(result[0].is_hidden, false);
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assert.equal(result[1].is_hidden, false);
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assert.equal(result[2].is_hidden, false);
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assert.equal(result[0].include_sender, true);
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assert.equal(result[1].include_sender, false);
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assert.equal(result[2].include_sender, false);
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// Additionally test that the message with a mention is marked as such.
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assert.equal(result[1].mention_classname, "group_mention");
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// Now, mute the sender.
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muted_users.add_muted_user(10);
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result = calculate_variables(list, messages);
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// Check that `is_hidden` is true and `include_sender` is false on all messages.
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assert.equal(result[0].is_hidden, true);
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assert.equal(result[1].is_hidden, true);
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assert.equal(result[2].is_hidden, true);
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assert.equal(result[0].include_sender, false);
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assert.equal(result[1].include_sender, false);
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assert.equal(result[2].include_sender, false);
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// Additionally test that, both there is no mention classname even on that message
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// which has a mention, since we don't want to display muted mentions so visibly.
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assert.equal(result[1].mention_classname, null);
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// Now, reveal the hidden messages.
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let is_revealed = true;
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result = calculate_variables(list, messages, is_revealed);
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// Check that `is_hidden` is false and `include_sender` is true on all messages.
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assert.equal(result[0].is_hidden, false);
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assert.equal(result[1].is_hidden, false);
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assert.equal(result[2].is_hidden, false);
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assert.equal(result[0].include_sender, true);
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assert.equal(result[1].include_sender, true);
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assert.equal(result[2].include_sender, true);
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// Additionally test that the message with a mention is marked as such.
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assert.equal(result[1].mention_classname, "group_mention");
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// Now test rehiding muted user's message
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is_revealed = false;
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result = calculate_variables(list, messages, is_revealed);
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// Check that `is_hidden` is false and `include_sender` is false on all messages.
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assert.equal(result[0].is_hidden, true);
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assert.equal(result[1].is_hidden, true);
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assert.equal(result[2].is_hidden, true);
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assert.equal(result[0].include_sender, false);
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assert.equal(result[1].include_sender, false);
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assert.equal(result[2].include_sender, false);
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// Additionally test that, both there is no mention classname even on that message
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// which has a mention, since we don't want to display hidden mentions so visibly.
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assert.equal(result[1].mention_classname, null);
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})();
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});
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test("merge_message_groups", ({mock_template}) => {
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mock_template("message_list.hbs", false, () => "<message-list-stub>");
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// MessageListView has lots of DOM code, so we are going to test the message
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// group merging logic on its own.
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function build_message_context(message = {}, message_context = {}) {
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message_context = {
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include_sender: true,
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...message_context,
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};
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message_context.msg = {
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id: _.uniqueId("test_message_"),
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status_message: false,
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type: "stream",
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stream_id: 2,
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topic: "Test topic 1",
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sender_email: "test@example.com",
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timestamp: (next_timestamp += 1),
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...message,
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};
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return message_context;
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}
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function build_message_group(messages) {
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return {
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message_containers: messages,
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message_group_id: _.uniqueId("test_message_group_"),
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};
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}
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function build_list(message_groups) {
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const filter = new Filter([{operator: "stream", operand: "foo"}]);
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const list = new message_list.MessageList({
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filter,
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is_node_test: true,
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});
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const view = new MessageListView(list, true, true);
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view._message_groups = message_groups;
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view.list.unsubscribed_bookend_content = noop;
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view.list.subscribed_bookend_content = noop;
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return view;
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}
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function extract_message_ids(lst) {
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return lst.map((item) => item.msg.id);
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}
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function assert_message_list_equal(list1, list2) {
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const ids1 = extract_message_ids(list1);
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const ids2 = extract_message_ids(list2);
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assert.ok(ids1.length);
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assert.deepEqual(ids1, ids2);
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}
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function extract_group(group) {
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return extract_message_ids(group.message_containers);
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}
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|
|
|
function assert_message_groups_list_equal(list1, list2) {
|
|
const ids1 = list1.map((group) => extract_group(group));
|
|
const ids2 = list2.map((group) => extract_group(group));
|
|
assert.ok(ids1.length);
|
|
assert.deepEqual(ids1, ids2);
|
|
}
|
|
|
|
(function test_empty_list_bottom() {
|
|
const list = build_list([]);
|
|
const message_group = build_message_group([build_message_context()]);
|
|
|
|
const result = list.merge_message_groups([message_group], "bottom");
|
|
|
|
assert_message_groups_list_equal(list._message_groups, [message_group]);
|
|
assert_message_groups_list_equal(result.append_groups, [message_group]);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
|
|
(function test_append_message_same_topic() {
|
|
const message1 = build_message_context();
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context();
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "bottom");
|
|
|
|
assert_message_groups_list_equal(list._message_groups, [
|
|
build_message_group([message1, message2]),
|
|
]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert_message_list_equal(result.append_messages, [message2]);
|
|
})();
|
|
|
|
(function test_append_message_different_topic() {
|
|
const message1 = build_message_context();
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({topic: "Test topic 2"});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "bottom");
|
|
|
|
assert.ok(!message_group2.date_unchanged, true);
|
|
assert_message_groups_list_equal(list._message_groups, [message_group1, message_group2]);
|
|
assert_message_groups_list_equal(result.append_groups, [message_group2]);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
|
|
(function test_append_message_different_topic_and_days() {
|
|
const message1 = build_message_context({timestamp: 1000});
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({topic: "Test topic 2", timestamp: 900000});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "bottom");
|
|
|
|
assert_message_groups_list_equal(list._message_groups, [message_group1, message_group2]);
|
|
assert_message_groups_list_equal(result.append_groups, [message_group2]);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert.deepEqual(result.append_messages, []);
|
|
assert.equal(message_group2.date_unchanged, false);
|
|
})();
|
|
|
|
(function test_append_message_different_day() {
|
|
const message1 = build_message_context({timestamp: 1000});
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({timestamp: 900000});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "bottom");
|
|
|
|
assert_message_groups_list_equal(list._message_groups, [message_group1]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert.deepEqual(result.append_messages, [message2]);
|
|
assert.ok(list._message_groups[0].message_containers[1].want_date_divider);
|
|
})();
|
|
|
|
(function test_append_message_historical() {
|
|
const message1 = build_message_context({historical: false});
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({historical: true});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "bottom");
|
|
|
|
assert.ok(message_group2.bookend_top);
|
|
assert_message_groups_list_equal(list._message_groups, [message_group1, message_group2]);
|
|
assert_message_groups_list_equal(result.append_groups, [message_group2]);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
|
|
(function test_append_message_same_topic_me_message() {
|
|
const message1 = build_message_context();
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({is_me_message: true});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "bottom");
|
|
|
|
assert.ok(message2.include_sender);
|
|
assert_message_groups_list_equal(list._message_groups, [
|
|
build_message_group([message1, message2]),
|
|
]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert_message_list_equal(result.append_messages, [message2]);
|
|
})();
|
|
|
|
(function test_prepend_message_same_topic() {
|
|
const message1 = build_message_context();
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context();
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "top");
|
|
|
|
assert_message_groups_list_equal(list._message_groups, [
|
|
build_message_group([message2, message1]),
|
|
]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert_message_groups_list_equal(result.rerender_groups, [
|
|
build_message_group([message2, message1]),
|
|
]);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
|
|
(function test_prepend_message_different_topic() {
|
|
const message1 = build_message_context();
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({topic: "Test topic 2"});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "top");
|
|
|
|
assert_message_groups_list_equal(list._message_groups, [message_group2, message_group1]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert_message_groups_list_equal(result.prepend_groups, [message_group2]);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
|
|
(function test_prepend_message_different_topic_and_day() {
|
|
const message1 = build_message_context({timestamp: 900000});
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({topic: "Test topic 2", timestamp: 1000});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "top");
|
|
|
|
assert.equal(message_group1.date_unchanged, false);
|
|
assert_message_groups_list_equal(list._message_groups, [message_group2, message_group1]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert_message_groups_list_equal(result.prepend_groups, [message_group2]);
|
|
assert.deepEqual(result.rerender_groups, [message_group1]);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
|
|
(function test_prepend_message_different_day() {
|
|
const message1 = build_message_context({timestamp: 900000});
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({timestamp: 1000});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "top");
|
|
|
|
assert.equal(message_group2.message_containers[1].date_divider_html, "900000000");
|
|
assert_message_groups_list_equal(list._message_groups, [message_group2]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert.deepEqual(result.prepend_groups, []);
|
|
assert_message_groups_list_equal(result.rerender_groups, [message_group2]);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
|
|
(function test_prepend_message_historical() {
|
|
const message1 = build_message_context({historical: false});
|
|
const message_group1 = build_message_group([message1]);
|
|
|
|
const message2 = build_message_context({historical: true});
|
|
const message_group2 = build_message_group([message2]);
|
|
|
|
const list = build_list([message_group1]);
|
|
const result = list.merge_message_groups([message_group2], "top");
|
|
|
|
assert.ok(message_group1.bookend_top);
|
|
assert_message_groups_list_equal(list._message_groups, [message_group2, message_group1]);
|
|
assert.deepEqual(result.append_groups, []);
|
|
assert_message_groups_list_equal(result.prepend_groups, [message_group2]);
|
|
assert.deepEqual(result.rerender_groups, []);
|
|
assert.deepEqual(result.append_messages, []);
|
|
})();
|
|
});
|
|
|
|
test("render_windows", ({mock_template}) => {
|
|
mock_template("message_list.hbs", false, () => "<message-list-stub>");
|
|
// We only render up to 400 messages at a time in our message list,
|
|
// and we only change the window (which is a range, really, with
|
|
// start/end) when the pointer moves outside of the window or close
|
|
// to the edges.
|
|
|
|
const view = (function make_view() {
|
|
const filter = new Filter([]);
|
|
|
|
const list = new message_list.MessageList({
|
|
filter,
|
|
is_node_test: true,
|
|
});
|
|
|
|
const view = list.view;
|
|
|
|
// Stub out functionality that is not core to the rendering window
|
|
// logic.
|
|
list.data.unmuted_messages = (messages) => messages;
|
|
|
|
// We don't need to actually render the DOM. The windowing logic
|
|
// sits above that layer.
|
|
view.render = noop;
|
|
view.rerender_preserving_scrolltop = noop;
|
|
|
|
return view;
|
|
})();
|
|
|
|
const list = view.list;
|
|
|
|
(function test_with_empty_list() {
|
|
// The function should early exit here.
|
|
const rendered = view.maybe_rerender();
|
|
assert.equal(rendered, false);
|
|
})();
|
|
|
|
let messages;
|
|
|
|
function reset_list(opts) {
|
|
messages = _.range(opts.count).map((i) => ({
|
|
id: i,
|
|
}));
|
|
list.selected_idx = () => 0;
|
|
list.view.clear_table = noop;
|
|
list.clear();
|
|
|
|
list.add_messages(messages, {});
|
|
}
|
|
|
|
function verify_no_move_range(start, end) {
|
|
// In our render window, there are up to 150 positions in
|
|
// the list (with potentially 50 at the start if the range
|
|
// starts with 0) where we can move the pointer without forcing
|
|
// a re-render. The code avoids hasty re-renders for
|
|
// performance reasons.
|
|
for (const idx of _.range(start, end)) {
|
|
list.selected_idx = () => idx;
|
|
const rendered = view.maybe_rerender();
|
|
assert.equal(rendered, false);
|
|
}
|
|
}
|
|
|
|
function verify_move(idx, range) {
|
|
const start = range[0];
|
|
const end = range[1];
|
|
|
|
list.selected_idx = () => idx;
|
|
const rendered = view.maybe_rerender();
|
|
assert.equal(rendered, true);
|
|
assert.equal(view._render_win_start, start);
|
|
assert.equal(view._render_win_end, end);
|
|
}
|
|
|
|
function verify_move_and_no_move_range(move_target, opts = {}) {
|
|
// When we move to position X, we expect 250/2 = 125 messages on
|
|
// either side, unless that goes outside the `count`, in which
|
|
// case we'll specify it in `opts`.
|
|
const move_start = opts.move_start ?? move_target - 125;
|
|
const move_end = opts.move_end ?? move_target + 125;
|
|
verify_move(move_target, [move_start, move_end]);
|
|
// the no-move range is a 50 buffer on each side
|
|
const no_move_start = opts.no_move_start ?? move_start + 50;
|
|
const no_move_end = move_end - 50;
|
|
verify_no_move_range(no_move_start, no_move_end);
|
|
}
|
|
|
|
reset_list({count: 51});
|
|
verify_no_move_range(0, 51); // This is the whole list
|
|
|
|
// Start a new list with more messages. Note that the order of
|
|
// these checks matters; each time we call `verify_move` or
|
|
// `verify_move_and_no_move_range`, we are moving the currently
|
|
// selected position in the list.
|
|
reset_list({count: 450});
|
|
|
|
// 250 messages rendered, with the last 50 in the move range
|
|
verify_no_move_range(0, 200);
|
|
|
|
verify_move_and_no_move_range(350, {
|
|
// top maxes out at 450
|
|
move_end: 450,
|
|
});
|
|
|
|
// We load more than 125 on the upper end, because we load the full 250
|
|
// messages and 124 is less than half of that.
|
|
verify_move_and_no_move_range(124, {
|
|
move_start: 0,
|
|
move_end: 250,
|
|
});
|
|
|
|
// If we now jump to a message ID close enough to the end of the
|
|
// range, the render window is limited.
|
|
verify_move_and_no_move_range(350, {
|
|
move_end: 450,
|
|
});
|
|
|
|
// Now jump the selected ID close to the start again.
|
|
verify_move_and_no_move_range(124, {
|
|
move_start: 0,
|
|
move_end: 250,
|
|
// The first 50 aren't in a move range, because we can't load earlier
|
|
// messages than 0.
|
|
no_move_start: 0,
|
|
});
|
|
|
|
verify_move_and_no_move_range(400, {
|
|
// top maxes out at 450
|
|
move_end: 450,
|
|
});
|
|
|
|
reset_list({count: 800});
|
|
verify_no_move_range(0, 200);
|
|
|
|
verify_move_and_no_move_range(350);
|
|
|
|
verify_move_and_no_move_range(500);
|
|
|
|
verify_move_and_no_move_range(750, {
|
|
// top maxes out at 800
|
|
move_end: 800,
|
|
});
|
|
|
|
verify_move_and_no_move_range(499);
|
|
|
|
verify_move_and_no_move_range(348);
|
|
|
|
// We load more than 125 on the upper end, because we load the full 250
|
|
// messages and 122 is less than half of that.
|
|
verify_move_and_no_move_range(122, {
|
|
move_start: 0,
|
|
move_end: 250,
|
|
no_move_start: 0,
|
|
});
|
|
});
|