72 lines
2.6 KiB
TypeScript
72 lines
2.6 KiB
TypeScript
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import test from 'node:test';
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import assert from 'node:assert/strict';
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import {
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buildChatJumpEntries,
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chatMessageDomId,
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resolveTailCountForJumpTarget,
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truncateChatJumpLabel,
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} from './chatJumpNav.ts';
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test('truncateChatJumpLabel collapses whitespace and ellipsizes', () => {
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assert.equal(truncateChatJumpLabel(' hello world '), 'hello world');
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assert.equal(
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truncateChatJumpLabel('a'.repeat(40), 10),
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`${'a'.repeat(7)}...`,
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);
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assert.equal(truncateChatJumpLabel(' '), '');
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});
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test('buildChatJumpEntries returns empty until the minimum user-turn threshold', () => {
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const messages = [
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{ id: 'u1', role: 'user', content: 'one' },
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{ id: 'a1', role: 'assistant', content: 'ok' },
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{ id: 'u2', role: 'user', content: 'two' },
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];
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assert.deepEqual(buildChatJumpEntries(messages), []);
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assert.equal(
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buildChatJumpEntries([
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...messages,
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{ id: 'u3', role: 'user', content: 'three' },
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]).length,
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3,
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);
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});
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test('buildChatJumpEntries uses empty label fallback and skips non-user roles', () => {
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const entries = buildChatJumpEntries(
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[
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{ id: 's', role: 'system', content: 'ignore' },
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{ id: 'u1', role: 'user', content: ' ' },
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{ id: 't', role: 'tool', content: 'tool' },
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{ id: 'u2', role: 'user', content: 'second' },
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{ id: 'u3', role: 'user', content: 'third' },
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],
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{ emptyLabel: '(empty)' },
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);
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assert.deepEqual(entries, [
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{ messageId: 'u1', label: '(empty)', index: 1 },
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{ messageId: 'u2', label: 'second', index: 2 },
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{ messageId: 'u3', label: 'third', index: 3 },
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]);
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});
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test('resolveTailCountForJumpTarget expands only when the target is outside the window', () => {
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const visible = [{ id: 'a' }, { id: 'b' }, { id: 'c' }, { id: 'd' }, { id: 'e' }];
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assert.equal(resolveTailCountForJumpTarget(visible, 'd', 2), 2);
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assert.equal(resolveTailCountForJumpTarget(visible, 'b', 2), 4);
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assert.equal(resolveTailCountForJumpTarget(visible, 'missing', 2), 2);
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});
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test('resolveTailCountForJumpTarget grows with appends so a pinned target stays mounted', () => {
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const before = [{ id: 'a' }, { id: 'b' }, { id: 'c' }, { id: 'd' }, { id: 'e' }];
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const afterJump = resolveTailCountForJumpTarget(before, 'b', 2);
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assert.equal(afterJump, 4);
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// slice(-4) on a longer list would drop 'b' unless the count is re-resolved.
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const afterAppend = [...before, { id: 'f' }, { id: 'g' }];
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assert.equal(resolveTailCountForJumpTarget(afterAppend, 'b', afterJump), 6);
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});
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test('chatMessageDomId prefixes message ids for DOM anchors', () => {
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assert.equal(chatMessageDomId('msg-12'), 'ai-chat-msg-msg-12');
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});
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