85 lines
2.7 KiB
TypeScript
85 lines
2.7 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import { sortDmChannels } from './dmSorting';
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import type { DmChannel } from '@backspace/shared';
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function makeDm(id: string, lastMessageCreatedAt: number | null, createdAt = 1000): DmChannel {
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return {
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id,
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createdAt,
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members: [],
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lastMessage: lastMessageCreatedAt != null
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? { id: `msg-${id}`, dmChannelId: id, userId: 'u1', content: 'test', createdAt: lastMessageCreatedAt }
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: null,
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};
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}
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describe('sortDmChannels', () => {
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it('sorts by recency when no unreads', () => {
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const dms = [
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makeDm('old', 100),
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makeDm('new', 300),
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makeDm('mid', 200),
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];
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const sorted = sortDmChannels(dms, new Set(), null);
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expect(sorted.map(d => d.id)).toEqual(['new', 'mid', 'old']);
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});
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it('puts unread channels first', () => {
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const dms = [
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makeDm('read-new', 300),
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makeDm('unread-old', 100),
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makeDm('read-mid', 200),
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];
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const sorted = sortDmChannels(dms, new Set(['unread-old']), null);
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expect(sorted.map(d => d.id)).toEqual(['unread-old', 'read-new', 'read-mid']);
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});
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it('sorts within unread group by recency', () => {
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const dms = [
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makeDm('unread-old', 100),
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makeDm('unread-new', 300),
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makeDm('read', 200),
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];
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const sorted = sortDmChannels(dms, new Set(['unread-old', 'unread-new']), null);
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expect(sorted.map(d => d.id)).toEqual(['unread-new', 'unread-old', 'read']);
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});
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it('sorts within read group by recency', () => {
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const dms = [
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makeDm('read-old', 100),
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makeDm('read-new', 300),
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makeDm('unread', 200),
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];
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const sorted = sortDmChannels(dms, new Set(['unread']), null);
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expect(sorted.map(d => d.id)).toEqual(['unread', 'read-new', 'read-old']);
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});
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it('excludes current channel from unread group', () => {
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const dms = [
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makeDm('current-unread', 100),
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makeDm('other-unread', 200),
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makeDm('read', 300),
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];
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// current-unread is in unreadChannels but is the active channel — treat as read
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const sorted = sortDmChannels(dms, new Set(['current-unread', 'other-unread']), 'current-unread');
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expect(sorted.map(d => d.id)).toEqual(['other-unread', 'read', 'current-unread']);
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});
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it('falls back to createdAt when no lastMessage', () => {
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const dms = [
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makeDm('no-msg-old', null, 100),
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makeDm('no-msg-new', null, 300),
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makeDm('has-msg', 200),
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];
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const sorted = sortDmChannels(dms, new Set(), null);
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expect(sorted.map(d => d.id)).toEqual(['no-msg-new', 'has-msg', 'no-msg-old']);
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});
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it('does not mutate the input array', () => {
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const dms = [makeDm('b', 100), makeDm('a', 200)];
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const original = [...dms];
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sortDmChannels(dms, new Set(), null);
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expect(dms).toEqual(original);
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});
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});
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