Add comprehensive tests for staged history loading
Unit tests: - Staged loading (initial batch, background fetch, concurrent requests) - Deduplication (by record ID, empty record sets) - Event subscription (subscribe/unsubscribe, error handling) - Pagination (max records limit, batch sizes) Integration tests: - Race conditions (concurrent requests, cache consistency, duplicate handling) - Edge cases (empty history, single record, batch boundaries) Tests verify: - No records are missed during staged loading - No duplicates are created - Cache remains consistent during concurrent operations - Background fetch doesn't interfere with concurrent user requests
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@@ -398,4 +398,187 @@ describe('GET /api/history/recent', () => {
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expect(Array.isArray(res.body.history)).toBe(true);
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});
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});
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describe('staged loading - race conditions', () => {
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it('handles concurrent requests without data loss', async () => {
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const app = createApp({ skipRateLimits: true });
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// Set up 150 records with unique episodeIds to test staged loading
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const sonarrRecords = Array.from({ length: 150 }, (_, i) => ({
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id: i + 1,
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eventType: 'downloadFolderImported',
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sourceTitle: `Show.S01E${i + 1}`,
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date: new Date(Date.now() - i * 60000).toISOString(),
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episodeId: i + 1, // Unique episodeId for each record
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episode: { seasonNumber: 1, episodeNumber: i + 1, title: `Episode ${i + 1}`, hasFile: true },
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series: { id: 10, title: 'My Show', titleSlug: 'my-show', tags: [1], images: [] },
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seriesId: 10
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}));
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setHistory(sonarrRecords, []);
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const { cookies } = await loginAs(app);
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// Make concurrent requests
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const [res1, res2, res3] = await Promise.all([
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request(app).get('/api/history/recent').set('Cookie', cookies),
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request(app).get('/api/history/recent').set('Cookie', cookies),
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request(app).get('/api/history/recent').set('Cookie', cookies)
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]);
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// All requests should succeed
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expect(res1.status).toBe(200);
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expect(res2.status).toBe(200);
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expect(res3.status).toBe(200);
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// All should return the same data (cache hit)
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expect(res1.body.history).toEqual(res2.body.history);
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expect(res2.body.history).toEqual(res3.body.history);
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// Verify no duplicate episodeIds
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const episodeIds = res1.body.history.map(h => h.title);
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const uniqueEpisodeIds = new Set(episodeIds);
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expect(episodeIds.length).toBe(uniqueEpisodeIds.size);
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});
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it('maintains cache consistency during background fetch', async () => {
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const app = createApp({ skipRateLimits: true });
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// Start with 100 records with unique episodeIds
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const initialRecords = Array.from({ length: 100 }, (_, i) => ({
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id: i + 1,
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eventType: 'downloadFolderImported',
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sourceTitle: `Show.S01E${i + 1}`,
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date: new Date(Date.now() - i * 60000).toISOString(),
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episodeId: i + 1,
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episode: { seasonNumber: 1, episodeNumber: i + 1, title: `Episode ${i + 1}`, hasFile: true },
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series: { id: 10, title: 'My Show', titleSlug: 'my-show', tags: [1], images: [] },
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seriesId: 10
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}));
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setHistory(initialRecords, []);
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const { cookies } = await loginAs(app);
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// First request populates cache
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const res1 = await request(app)
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.get('/api/history/recent')
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.set('Cookie', cookies);
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expect(res1.status).toBe(200);
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expect(res1.body.history).toHaveLength(100);
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// Add more records to simulate background fetch
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const additionalRecords = Array.from({ length: 50 }, (_, i) => ({
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id: i + 101,
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eventType: 'downloadFolderImported',
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sourceTitle: `Show.S01E${i + 101}`,
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date: new Date(Date.now() - (i + 100) * 60000).toISOString(),
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episodeId: i + 101,
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episode: { seasonNumber: 1, episodeNumber: i + 101, title: `Episode ${i + 101}`, hasFile: true },
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series: { id: 10, title: 'My Show', titleSlug: 'my-show', tags: [1], images: [] },
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seriesId: 10
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}));
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setHistory([...initialRecords, ...additionalRecords], []);
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// Invalidate cache to simulate background fetch completion
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cache.invalidate('history:sonarr');
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cache.set('history:sonarr', [...initialRecords, ...additionalRecords].map(r => ({
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...r,
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_instanceName: 'Main Sonarr',
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series: r.series ? { ...r.series, _instanceUrl: 'https://sonarr.test', _instanceName: 'Main Sonarr' } : undefined
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})), CACHE_TTL);
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// Second request should get updated data
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const res2 = await request(app)
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.get('/api/history/recent')
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.set('Cookie', cookies);
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expect(res2.status).toBe(200);
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expect(res2.body.history).toHaveLength(150);
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// Verify no duplicates
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const episodeIds = res2.body.history.map(h => h.title);
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const uniqueEpisodeIds = new Set(episodeIds);
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expect(episodeIds.length).toBe(uniqueEpisodeIds.size);
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});
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it('handles duplicate records gracefully', async () => {
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const app = createApp({ skipRateLimits: true });
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// Create records with duplicate IDs (simulating race condition)
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const records = [
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{
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id: 1,
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eventType: 'downloadFolderImported',
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sourceTitle: 'Show.S01E01',
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date: new Date().toISOString(),
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series: { id: 10, title: 'My Show', tags: [1], images: [] },
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seriesId: 10
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},
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{
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id: 2,
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eventType: 'downloadFolderImported',
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sourceTitle: 'Show.S01E02',
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date: new Date(Date.now() - 60000).toISOString(),
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series: { id: 10, title: 'My Show', tags: [1], images: [] },
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seriesId: 10
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},
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{
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id: 1, // Duplicate ID
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eventType: 'downloadFolderImported',
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sourceTitle: 'Show.S01E01',
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date: new Date(Date.now() - 120000).toISOString(),
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series: { id: 10, title: 'My Show', tags: [1], images: [] },
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seriesId: 10
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}
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];
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setHistory(records, []);
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const { cookies } = await loginAs(app);
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const res = await request(app)
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.get('/api/history/recent')
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.set('Cookie', cookies);
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expect(res.status).toBe(200);
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// The deduplication in history.js should handle this
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// We should get 2 unique items, not 3
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const uniqueSeries = new Set(res.body.history.map(h => h.title));
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expect(uniqueSeries.size).toBeLessThanOrEqual(2);
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});
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});
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describe('staged loading - edge cases', () => {
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it('handles empty history', async () => {
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const app = createApp({ skipRateLimits: true });
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setHistory([], []);
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const { cookies } = await loginAs(app);
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const res = await request(app)
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.get('/api/history/recent')
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.set('Cookie', cookies);
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expect(res.status).toBe(200);
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expect(res.body.history).toEqual([]);
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});
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it('handles single record', async () => {
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const app = createApp({ skipRateLimits: true });
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setHistory([SONARR_RECORD_IMPORTED], []);
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const { cookies } = await loginAs(app);
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const res = await request(app)
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.get('/api/history/recent')
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.set('Cookie', cookies);
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expect(res.status).toBe(200);
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expect(res.body.history).toHaveLength(1);
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});
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it('handles exactly 100 records (batch boundary)', async () => {
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const app = createApp({ skipRateLimits: true });
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const records = Array.from({ length: 100 }, (_, i) => ({
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id: i + 1,
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eventType: 'downloadFolderImported',
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sourceTitle: `Show.S01E${(i % 10) + 1}`,
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date: new Date(Date.now() - i * 60000).toISOString(),
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series: { id: 10, title: 'My Show', tags: [1], images: [] },
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seriesId: 10
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}));
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setHistory(records, []);
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const { cookies } = await loginAs(app);
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const res = await request(app)
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.get('/api/history/recent')
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.set('Cookie', cookies);
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expect(res.status).toBe(200);
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expect(res.body.history).toHaveLength(100);
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});
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});
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});
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