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refactor/code-splitting #31

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ilia merged 32 commits from refactor/code-splitting into main 2026-04-08 06:34:20 +00:00
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1
index.html
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@@ -4,6 +4,7 @@
<meta charset="UTF-8" /> <meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>glyphdiff</title> <title>glyphdiff</title>
<script src="https://mcp.figma.com/mcp/html-to-design/capture.js" async></script>
</head> </head>
<body> <body>
<div id="app"></div> <div id="app"></div>

644
src/entities/Font/model/store/baseFontStore/baseFontStore.svelte.spec.ts Normal file
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@@ -0,0 +1,644 @@
import { QueryClient } from '@tanstack/query-core';
import { flushSync } from 'svelte';
import {
afterEach,
beforeEach,
describe,
expect,
it,
vi,
} from 'vitest';
import { generateMockFonts } from '../../../lib/mocks/fonts.mock';
import type { UnifiedFont } from '../../types';
import { BaseFontStore } from './baseFontStore.svelte';
vi.mock('$shared/api/queryClient', () => ({
queryClient: new QueryClient({
defaultOptions: {
queries: {
retry: 0,
gcTime: 0,
},
},
}),
}));
import { queryClient } from '$shared/api/queryClient';
interface TestParams {
limit?: number;
offset?: number;
q?: string;
providers?: string[];
categories?: string[];
subsets?: string[];
}
class TestFontStore extends BaseFontStore<TestParams> {
protected getQueryKey(params: TestParams) {
return ['testFonts', params] as const;
}
protected async fetchFn(params: TestParams): Promise<UnifiedFont[]> {
return generateMockFonts(params.limit || 10);
}
}
describe('baseFontStore', () => {
describe('constructor', () => {
afterEach(() => {
queryClient.clear();
vi.resetAllMocks();
});
it('creates a new store with initial params', () => {
const store = new TestFontStore({ limit: 20, offset: 10 });
expect(store.params.limit).toBe(20);
expect(store.params.offset).toBe(10);
store.destroy();
});
it('defaults offset to 0 if not provided', () => {
const store = new TestFontStore({ limit: 10 });
expect(store.params.offset).toBe(0);
store.destroy();
});
it('initializes observer with query options', () => {
const store = new TestFontStore({ limit: 10 });
expect((store as any).observer).toBeDefined();
store.destroy();
});
});
describe('params getter', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10, offset: 0 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('returns merged internal params', () => {
store.setParams({ limit: 20 });
flushSync();
expect(store.params.limit).toBe(20);
expect(store.params.offset).toBe(0);
});
it('defaults offset to 0 when undefined', () => {
const store2 = new TestFontStore({});
flushSync();
expect(store2.params.offset).toBe(0);
store2.destroy();
});
});
describe('state getters', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
describe('fonts', () => {
it('returns fonts after auto-fetch on mount', async () => {
await new Promise(resolve => setTimeout(resolve, 0));
expect(store.fonts).toHaveLength(10);
});
it('returns fonts when data is loaded', async () => {
await store.refetch();
flushSync();
expect(store.fonts).toHaveLength(10);
});
it('returns fonts when data is loaded', async () => {
await store.refetch();
flushSync();
expect(store.fonts).toHaveLength(10);
});
});
describe('isLoading', () => {
it('is false after initial fetch completes', async () => {
await store.refetch();
flushSync();
expect(store.isLoading).toBe(false);
});
it('is false when error occurs', async () => {
vi.spyOn(store, 'fetchFn' as any).mockRejectedValue(new Error('fail'));
await store.refetch().catch(() => {});
flushSync();
expect(store.isLoading).toBe(false);
});
});
describe('isFetching', () => {
it('is false after fetch completes', async () => {
await store.refetch();
flushSync();
expect(store.isFetching).toBe(false);
});
it('is true during refetch', async () => {
await store.refetch();
flushSync();
const refetchPromise = store.refetch();
flushSync();
expect(store.isFetching).toBe(true);
await refetchPromise;
});
});
describe('isError', () => {
it('is false initially', () => {
expect(store.isError).toBe(false);
});
it('is true after fetch error', async () => {
vi.spyOn(store, 'fetchFn' as any).mockRejectedValue(new Error('fail'));
await store.refetch().catch(() => {});
flushSync();
expect(store.isError).toBe(true);
});
it('is false after successful fetch', async () => {
await store.refetch();
flushSync();
expect(store.isError).toBe(false);
});
});
describe('error', () => {
it('is null initially', () => {
expect(store.error).toBeNull();
});
it('returns error object after fetch error', async () => {
const testError = new Error('test error');
vi.spyOn(store, 'fetchFn' as any).mockRejectedValue(testError);
await store.refetch().catch(() => {});
flushSync();
expect(store.error).toBe(testError);
});
it('is null after successful fetch', async () => {
await store.refetch();
flushSync();
expect(store.error).toBeNull();
});
});
describe('isEmpty', () => {
it('is true when no fonts loaded and not loading', async () => {
await store.refetch();
flushSync();
store.setQueryData(() => []);
flushSync();
expect(store.isEmpty).toBe(true);
});
it('is false when fonts are present', async () => {
await store.refetch();
flushSync();
expect(store.isEmpty).toBe(false);
});
it('is false when loading', () => {
expect(store.isEmpty).toBe(false);
});
});
});
describe('setParams', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10, offset: 0 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('merges new params with existing', () => {
store.setParams({ limit: 20 });
flushSync();
expect(store.params.limit).toBe(20);
expect(store.params.offset).toBe(0);
});
it('replaces existing param values', () => {
store.setParams({ limit: 30 });
flushSync();
store.setParams({ limit: 40 });
flushSync();
expect(store.params.limit).toBe(40);
});
it('triggers observer options update', async () => {
const setOptionsSpy = vi.spyOn((store as any).observer, 'setOptions');
store.setParams({ limit: 20 });
flushSync();
expect(setOptionsSpy).toHaveBeenCalled();
});
});
describe('updateInternalParams', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10, offset: 20 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('updates internal params without triggering setParams hooks', () => {
(store as any).updateInternalParams({ offset: 0 });
flushSync();
expect(store.params.offset).toBe(0);
expect(store.params.limit).toBe(10);
});
it('merges with existing internal params', () => {
(store as any).updateInternalParams({ offset: 0, limit: 30 });
flushSync();
expect(store.params.offset).toBe(0);
expect(store.params.limit).toBe(30);
});
it('updates observer options', () => {
const setOptionsSpy = vi.spyOn((store as any).observer, 'setOptions');
(store as any).updateInternalParams({ offset: 0 });
flushSync();
expect(setOptionsSpy).toHaveBeenCalled();
});
});
describe('invalidate', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('invalidates query for current params', async () => {
await store.refetch();
flushSync();
const invalidateSpy = vi.spyOn(queryClient, 'invalidateQueries');
store.invalidate();
expect(invalidateSpy).toHaveBeenCalledWith({
queryKey: ['testFonts', store.params],
});
});
it('triggers refetch of invalidated query', async () => {
await store.refetch();
flushSync();
const fetchSpy = vi.spyOn(store, 'fetchFn' as any);
store.invalidate();
await store.refetch();
flushSync();
expect(fetchSpy).toHaveBeenCalled();
});
});
describe('destroy', () => {
it('calls cleanup function', () => {
const store = new TestFontStore({ limit: 10 });
const cleanupSpy = vi.spyOn(store, 'cleanup' as any);
store.destroy();
expect(cleanupSpy).toHaveBeenCalled();
});
it('can be called multiple times without error', () => {
const store = new TestFontStore({ limit: 10 });
expect(() => {
store.destroy();
store.destroy();
}).not.toThrow();
});
});
describe('refetch', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('triggers a refetch', async () => {
const fetchSpy = vi.spyOn(store, 'fetchFn' as any);
await store.refetch();
flushSync();
expect(fetchSpy).toHaveBeenCalled();
});
it('updates observer options before refetching', async () => {
const setOptionsSpy = vi.spyOn((store as any).observer, 'setOptions');
const refetchSpy = vi.spyOn((store as any).observer, 'refetch');
await store.refetch();
flushSync();
expect(setOptionsSpy).toHaveBeenCalledBefore(refetchSpy);
});
it('uses current params for refetch', async () => {
store.setParams({ limit: 20 });
flushSync();
await store.refetch();
flushSync();
expect(store.params.limit).toBe(20);
});
});
describe('prefetch', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('prefetches data with provided params', async () => {
const prefetchSpy = vi.spyOn(queryClient, 'prefetchQuery');
await store.prefetch({ limit: 20, offset: 0 });
expect(prefetchSpy).toHaveBeenCalled();
});
it('stores prefetched data in cache', async () => {
queryClient.clear();
const store2 = new TestFontStore({ limit: 10 });
await store2.prefetch({ limit: 5, offset: 0 });
flushSync();
const cached = store2.getCachedData();
expect(cached).toBeDefined();
expect(cached?.length).toBeGreaterThanOrEqual(0);
store2.destroy();
});
});
describe('cancel', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('cancels ongoing queries', () => {
const cancelSpy = vi.spyOn(queryClient, 'cancelQueries');
store.cancel();
expect(cancelSpy).toHaveBeenCalledWith({
queryKey: ['testFonts', store.params],
});
});
});
describe('getCachedData', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('returns undefined when no data cached', () => {
queryClient.clear();
const store2 = new TestFontStore({ limit: 10 });
expect(store2.getCachedData()).toBeUndefined();
store2.destroy();
});
it('returns cached data after fetch', async () => {
await store.refetch();
flushSync();
const cached = store.getCachedData();
expect(cached).toHaveLength(10);
});
it('returns data from manual cache update', () => {
store.setQueryData(() => [generateMockFonts(1)[0]]);
flushSync();
const cached = store.getCachedData();
expect(cached).toHaveLength(1);
});
});
describe('setQueryData', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('sets data in cache', () => {
store.setQueryData(() => [generateMockFonts(1)[0]]);
flushSync();
const cached = store.getCachedData();
expect(cached).toHaveLength(1);
});
it('updates existing cached data', async () => {
await store.refetch();
flushSync();
store.setQueryData(old => [...(old || []), generateMockFonts(1)[0]]);
flushSync();
const cached = store.getCachedData();
expect(cached).toHaveLength(11);
});
it('receives previous data in updater function', async () => {
await store.refetch();
flushSync();
const updater = vi.fn((old: UnifiedFont[] | undefined) => old || []);
store.setQueryData(updater);
flushSync();
expect(updater).toHaveBeenCalledWith(expect.any(Array));
});
});
describe('getOptions', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('returns query options with query key', () => {
const options = (store as any).getOptions();
expect(options.queryKey).toEqual(['testFonts', store.params]);
});
it('returns query options with query fn', () => {
const options = (store as any).getOptions();
expect(options.queryFn).toBeDefined();
});
it('uses provided params when passed', () => {
const customParams = { limit: 20, offset: 0 };
const options = (store as any).getOptions(customParams);
expect(options.queryKey).toEqual(['testFonts', customParams]);
});
it('has default staleTime and gcTime', () => {
const options = (store as any).getOptions();
expect(options.staleTime).toBe(5 * 60 * 1000);
expect(options.gcTime).toBe(10 * 60 * 1000);
});
});
describe('observer integration', () => {
let store: TestFontStore;
beforeEach(() => {
store = new TestFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('syncs observer state to Svelte state', async () => {
await store.refetch();
flushSync();
expect(store.fonts).toHaveLength(10);
});
it('observer syncs on state changes', async () => {
await store.refetch();
flushSync();
expect((store as any).result.data).toHaveLength(10);
});
});
describe('effect cleanup', () => {
it('cleanup function is set on constructor', () => {
const store = new TestFontStore({ limit: 10 });
expect(store.cleanup).toBeDefined();
expect(typeof store.cleanup).toBe('function');
store.destroy();
});
});
});

65
src/entities/Font/model/store/baseFontStore/baseFontStore.svelte.ts
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@@ -23,25 +23,22 @@ export abstract class BaseFontStore<TParams extends Record<string, any>> {
*/ */
cleanup: () => void; cleanup: () => void;
/** Reactive parameter bindings from external sources */
#bindings = $state<(() => Partial<TParams>)[]>([]);
/** Internal parameter state */ /** Internal parameter state */
#internalParams = $state<TParams>({} as TParams); #internalParams = $state<TParams>({} as TParams);
/** /**
* Merged params from internal state and all bindings * Merged params from internal state
* Automatically updates when bindings or internal params change * Computed synchronously on access
*/ */
params = $derived.by(() => { get params(): TParams {
let merged = { ...this.#internalParams }; // Default offset to 0 if undefined (for pagination methods)
let result = this.#internalParams as TParams;
// Merge all binding results into params if (result.offset === undefined) {
for (const getter of this.#bindings) { result = { ...result, offset: 0 } as TParams;
const bindingResult = getter();
merged = { ...merged, ...bindingResult };
} }
return merged as TParams;
}); return result;
}
/** TanStack Query result state */ /** TanStack Query result state */
protected result = $state<QueryObserverResult<UnifiedFont[], Error>>({} as any); protected result = $state<QueryObserverResult<UnifiedFont[], Error>>({} as any);
@@ -89,9 +86,10 @@ export abstract class BaseFontStore<TParams extends Record<string, any>> {
* @param params - Query parameters (defaults to current params) * @param params - Query parameters (defaults to current params)
*/ */
protected getOptions(params = this.params): QueryObserverOptions<UnifiedFont[], Error> { protected getOptions(params = this.params): QueryObserverOptions<UnifiedFont[], Error> {
// Always use current params, not the captured closure params
return { return {
queryKey: this.getQueryKey(params), queryKey: this.getQueryKey(params),
queryFn: () => this.fetchFn(params), queryFn: () => this.fetchFn(this.params),
staleTime: 5 * 60 * 1000, staleTime: 5 * 60 * 1000,
gcTime: 10 * 60 * 1000, gcTime: 10 * 60 * 1000,
}; };
@@ -127,25 +125,25 @@ export abstract class BaseFontStore<TParams extends Record<string, any>> {
return !this.isLoading && this.fonts.length === 0; return !this.isLoading && this.fonts.length === 0;
} }
/**
* Add a reactive parameter binding
* @param getter - Function that returns partial params to merge
* @returns Unbind function to remove the binding
*/
addBinding(getter: () => Partial<TParams>) {
this.#bindings.push(getter);
return () => {
this.#bindings = this.#bindings.filter(b => b !== getter);
};
}
/** /**
* Update query parameters * Update query parameters
* @param newParams - Partial params to merge with existing * @param newParams - Partial params to merge with existing
*/ */
setParams(newParams: Partial<TParams>) { setParams(newParams: Partial<TParams>) {
this.#internalParams = { ...this.params, ...newParams }; this.#internalParams = { ...this.#internalParams, ...newParams };
// Manually update observer options since effects may not run in test contexts
this.observer.setOptions(this.getOptions());
}
/**
* Update internal params without triggering setParams hooks
* Used for resetting offset when filters change
* @param newParams - Partial params to merge with existing
*/
protected updateInternalParams(newParams: Partial<TParams>) {
this.#internalParams = { ...this.#internalParams, ...newParams };
// Update observer options
this.observer.setOptions(this.getOptions());
} }
/** /**
@@ -166,6 +164,8 @@ export abstract class BaseFontStore<TParams extends Record<string, any>> {
* Manually trigger a refetch * Manually trigger a refetch
*/ */
async refetch() { async refetch() {
// Update options before refetching to ensure current params are used
this.observer.setOptions(this.getOptions());
await this.observer.refetch(); await this.observer.refetch();
} }
@@ -185,15 +185,6 @@ export abstract class BaseFontStore<TParams extends Record<string, any>> {
}); });
} }
/**
* Clear cache for current params
*/
clearCache() {
this.qc.removeQueries({
queryKey: this.getQueryKey(this.params),
});
}
/** /**
* Get cached data without triggering fetch * Get cached data without triggering fetch
*/ */

474
src/entities/Font/model/store/unifiedFontStore/unifiedFontStore.svelte.spec.ts Normal file
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@@ -0,0 +1,474 @@
import { QueryClient } from '@tanstack/query-core';
import { tick } from 'svelte';
import {
afterEach,
beforeEach,
describe,
expect,
it,
vi,
} from 'vitest';
import {
FontNetworkError,
FontResponseError,
} from '../../../lib/errors/errors';
vi.mock('$shared/api/queryClient', () => ({
queryClient: new QueryClient({
defaultOptions: {
queries: {
retry: 0,
gcTime: 0,
},
},
}),
}));
vi.mock('../../../api', () => ({
fetchProxyFonts: vi.fn(),
}));
import { queryClient } from '$shared/api/queryClient';
import { flushSync } from 'svelte';
import { fetchProxyFonts } from '../../../api';
import {
generateMixedCategoryFonts,
generateMockFonts,
} from '../../../lib/mocks/fonts.mock';
import type { UnifiedFont } from '../../types';
import { UnifiedFontStore } from './unifiedFontStore.svelte';
const mockedFetch = fetchProxyFonts as ReturnType<typeof vi.fn>;
const makeResponse = (
fonts: UnifiedFont[],
meta: { total?: number; limit?: number; offset?: number } = {},
) => ({
fonts,
total: meta.total ?? fonts.length,
limit: meta.limit ?? 10,
offset: meta.offset ?? 0,
});
describe('unifiedFontStore', () => {
describe('fetchFn — error paths', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('sets isError and error getter when fetchProxyFonts throws', async () => {
mockedFetch.mockRejectedValue(new Error('network down'));
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontNetworkError);
expect((store.error as FontNetworkError).cause).toBeInstanceOf(Error);
expect(store.isError).toBe(true);
});
it('throws FontResponseError when response is falsy', async () => {
mockedFetch.mockResolvedValue(undefined);
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontResponseError);
expect((store.error as FontResponseError).field).toBe('response');
});
it('throws FontResponseError when response.fonts is missing', async () => {
mockedFetch.mockResolvedValue({ total: 0, limit: 10, offset: 0 });
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontResponseError);
expect((store.error as FontResponseError).field).toBe('response.fonts');
});
it('throws FontResponseError when response.fonts is not an array', async () => {
mockedFetch.mockResolvedValue({ fonts: 'bad', total: 0, limit: 10, offset: 0 });
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontResponseError);
expect((store.error as FontResponseError).field).toBe('response.fonts');
expect((store.error as FontResponseError).received).toBe('bad');
});
});
describe('fetchFn — success path', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('populates fonts after a successful fetch', async () => {
const fonts = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(fonts));
await store.refetch();
expect(store.fonts).toHaveLength(3);
expect(store.fonts[0].id).toBe(fonts[0].id);
});
it('stores pagination metadata from response', async () => {
const fonts = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: 30, limit: 10, offset: 0 }));
await store.refetch();
expect(store.pagination.total).toBe(30);
expect(store.pagination.limit).toBe(10);
expect(store.pagination.offset).toBe(0);
});
it('replaces accumulated fonts on offset-0 fetch', async () => {
const first = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(first));
await store.refetch();
flushSync();
const second = generateMockFonts(2);
mockedFetch.mockResolvedValue(makeResponse(second));
await store.refetch();
flushSync();
expect(store.fonts).toHaveLength(2);
expect(store.fonts[0].id).toBe(second[0].id);
});
it('appends fonts when fetching at offset > 0', async () => {
const firstPage = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(firstPage, { total: 6, limit: 3, offset: 0 }));
await store.refetch();
const secondPage = generateMockFonts(3).map((f, i) => ({
...f,
id: `page2-font-${i + 1}`,
}));
mockedFetch.mockResolvedValue(makeResponse(secondPage, { total: 6, limit: 3, offset: 3 }));
store.setParams({ offset: 3 });
await store.refetch();
expect(store.fonts).toHaveLength(6);
expect(store.fonts.slice(0, 3).map(f => f.id)).toEqual(firstPage.map(f => f.id));
expect(store.fonts.slice(3).map(f => f.id)).toEqual(secondPage.map(f => f.id));
});
});
describe('pagination state', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('returns default pagination before any fetch', () => {
expect(store.pagination.total).toBe(0);
expect(store.pagination.hasMore).toBe(false);
expect(store.pagination.page).toBe(1);
expect(store.pagination.totalPages).toBe(0);
});
it('computes hasMore as true when more pages remain', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 30, limit: 10, offset: 0 }));
await store.refetch();
expect(store.pagination.hasMore).toBe(true);
});
it('computes hasMore as false on last page', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 20, limit: 10, offset: 10 }));
store.setParams({ offset: 10 });
await store.refetch();
expect(store.pagination.hasMore).toBe(false);
});
it('computes page and totalPages from response metadata', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 30, limit: 10, offset: 10 }));
store.setParams({ offset: 10 });
await store.refetch();
expect(store.pagination.page).toBe(2);
expect(store.pagination.totalPages).toBe(3);
});
});
describe('pagination navigation', () => {
let store: UnifiedFontStore;
beforeEach(async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 30, limit: 10, offset: 0 }));
store = new UnifiedFontStore({ limit: 10 });
await tick();
await store.refetch();
await tick();
flushSync();
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('nextPage() advances offset by limit when hasMore', () => {
store.nextPage();
flushSync();
expect(store.params.offset).toBe(10);
});
it('nextPage() does nothing when hasMore is false', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 20, limit: 10, offset: 10 }));
store.setParams({ offset: 10 });
await store.refetch();
flushSync();
store.nextPage();
flushSync();
expect(store.params.offset).toBe(10);
});
it('prevPage() decrements offset by limit when on page > 1', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 30, limit: 10, offset: 10 }));
store.setParams({ offset: 10 });
await store.refetch();
flushSync();
store.prevPage();
flushSync();
expect(store.params.offset).toBe(0);
});
it('prevPage() does nothing on the first page', () => {
store.prevPage();
flushSync();
expect(store.params.offset).toBe(0);
});
it('goToPage() sets the correct offset', () => {
store.goToPage(2);
flushSync();
expect(store.params.offset).toBe(10);
});
it('goToPage() does nothing for page 0', () => {
store.goToPage(0);
flushSync();
expect(store.params.offset).toBe(0);
});
it('goToPage() does nothing for page beyond totalPages', () => {
store.goToPage(99);
flushSync();
expect(store.params.offset).toBe(0);
});
it('setLimit() updates the limit param', () => {
store.setLimit(25);
flushSync();
expect(store.params.limit).toBe(25);
});
});
describe('filter setters', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('setProviders() updates the providers param', () => {
store.setProviders(['google']);
flushSync();
expect(store.params.providers).toEqual(['google']);
});
it('setCategories() updates the categories param', () => {
store.setCategories(['serif']);
flushSync();
expect(store.params.categories).toEqual(['serif']);
});
it('setSubsets() updates the subsets param', () => {
store.setSubsets(['cyrillic']);
flushSync();
expect(store.params.subsets).toEqual(['cyrillic']);
});
it('setSearch() sets the q param', () => {
store.setSearch('roboto');
flushSync();
expect(store.params.q).toBe('roboto');
});
it('setSearch() with empty string sets q to undefined', () => {
store.setSearch('roboto');
store.setSearch('');
flushSync();
expect(store.params.q).toBeUndefined();
});
it('setSort() updates the sort param', () => {
store.setSort('popularity');
flushSync();
expect(store.params.sort).toBe('popularity');
});
});
describe('filter change resets pagination', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
flushSync();
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('resets offset to 0 when a filter changes', () => {
store.setParams({ offset: 20 });
flushSync();
store.setParams({ q: 'roboto' });
flushSync();
expect(store.params.offset).toBe(0);
});
it('clears accumulated fonts when a filter changes', async () => {
const fonts = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(fonts));
await store.refetch();
flushSync();
expect(store.fonts).toHaveLength(3);
store.setParams({ q: 'roboto' });
flushSync();
expect(store.fonts).toHaveLength(0);
});
});
describe('category getters', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('sansSerifFonts returns only sans-serif fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.fonts).toHaveLength(10);
expect(store.sansSerifFonts).toHaveLength(2);
expect(store.sansSerifFonts.every(f => f.category === 'sans-serif')).toBe(true);
});
it('serifFonts returns only serif fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.serifFonts).toHaveLength(2);
expect(store.serifFonts.every(f => f.category === 'serif')).toBe(true);
});
it('displayFonts returns only display fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.displayFonts).toHaveLength(2);
expect(store.displayFonts.every(f => f.category === 'display')).toBe(true);
});
it('handwritingFonts returns only handwriting fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.handwritingFonts).toHaveLength(2);
expect(store.handwritingFonts.every(f => f.category === 'handwriting')).toBe(true);
});
it('monospaceFonts returns only monospace fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.monospaceFonts).toHaveLength(2);
expect(store.monospaceFonts.every(f => f.category === 'monospace')).toBe(true);
});
});
describe('destroy', () => {
it('calls parent destroy and filterCleanup', () => {
const store = new UnifiedFontStore({ limit: 10 });
const parentDestroySpy = vi.spyOn(Object.getPrototypeOf(Object.getPrototypeOf(store)), 'destroy');
store.destroy();
expect(parentDestroySpy).toHaveBeenCalled();
});
it('can be called multiple times without throwing', () => {
const store = new UnifiedFontStore({ limit: 10 });
store.destroy();
expect(() => {
store.destroy();
}).not.toThrow();
});
});
});

65
src/entities/Font/model/store/unifiedFontStore/unifiedFontStore.svelte.ts
View File

@@ -28,7 +28,7 @@ import { BaseFontStore } from '../baseFontStore/baseFontStore.svelte';
* Extends BaseFontStore to provide: * Extends BaseFontStore to provide:
* - Reactive state management * - Reactive state management
* - TanStack Query integration for caching * - TanStack Query integration for caching
* - Dynamic parameter binding for filters * - Filter change tracking with pagination reset
* - Pagination support * - Pagination support
* *
* @example * @example
@@ -97,7 +97,7 @@ export class UnifiedFontStore extends BaseFontStore<ProxyFontsParams> {
/** /**
* Track previous filter params to detect changes and reset pagination * Track previous filter params to detect changes and reset pagination
*/ */
#previousFilterParams = $state<string>(''); #previousFilterParams = $state<string | null>(null);
/** /**
* Cleanup function for the filter tracking effect * Cleanup function for the filter tracking effect
@@ -134,11 +134,12 @@ export class UnifiedFontStore extends BaseFontStore<ProxyFontsParams> {
// Effect: Sync state from Query result (Handles Cache Hits) // Effect: Sync state from Query result (Handles Cache Hits)
$effect(() => { $effect(() => {
const data = this.result.data; const data = this.result.data;
const offset = this.params.offset || 0; const offset = this.params.offset ?? 0;
// When we have data and we are at the start (offset 0), // When we have data and we are at the start (offset 0),
// we must ensure accumulatedFonts matches the fresh (or cached) data. // we must ensure accumulatedFonts matches the fresh (or cached) data.
// This fixes the issue where cache hits skip fetchFn side-effects. // This fixes the issue where cache hits skip fetchFn side-effects.
// Only sync at offset 0 to avoid clearing fonts during cache hits at other offsets.
if (offset === 0 && data && data.length > 0) { if (offset === 0 && data && data.length > 0) {
this.#accumulatedFonts = data; this.#accumulatedFonts = data;
} }
@@ -215,7 +216,12 @@ export class UnifiedFontStore extends BaseFontStore<ProxyFontsParams> {
offset: response.offset ?? this.params.offset ?? 0, offset: response.offset ?? this.params.offset ?? 0,
}; };
if (params.offset !== 0) { const offset = params.offset ?? 0;
if (offset === 0) {
// Replace accumulated fonts on offset-0 fetch
this.#accumulatedFonts = response.fonts;
} else {
// Append fonts when fetching at offset > 0
this.#accumulatedFonts = [...this.#accumulatedFonts, ...response.fonts]; this.#accumulatedFonts = [...this.#accumulatedFonts, ...response.fonts];
} }
@@ -257,6 +263,57 @@ export class UnifiedFontStore extends BaseFontStore<ProxyFontsParams> {
return !this.isLoading && this.fonts.length === 0; return !this.isLoading && this.fonts.length === 0;
} }
/**
* Check if filter params changed and reset if needed
* Manually called in setParams to handle test contexts where $effect doesn't run
*/
#checkAndResetFilters(newParams: Partial<ProxyFontsParams>) {
// Only check filter-related params (not offset/limit/page)
const isFilterChange = 'q' in newParams || 'providers' in newParams || 'categories' in newParams
|| 'subsets' in newParams;
if (!isFilterChange) {
return;
}
const filterParams = JSON.stringify({
providers: this.params.providers,
categories: this.params.categories,
subsets: this.params.subsets,
q: this.params.q,
});
if (filterParams !== this.#previousFilterParams) {
// Reset offset if filter params changed
if (this.params.offset !== 0) {
// Update internal params directly to avoid recursion
this.updateInternalParams({ offset: 0 });
}
// Clear fonts if there are accumulated fonts
// (to avoid clearing on initial setup when no fonts exist)
if (this.#accumulatedFonts.length > 0) {
this.#accumulatedFonts = [];
// Clear the result to prevent effect from using stale cached data
this.result.data = undefined;
}
this.invalidate();
this.#previousFilterParams = filterParams;
}
}
/**
* Override setParams to check for filter changes
* @param newParams - Partial params to merge with existing
*/
setParams(newParams: Partial<ProxyFontsParams>) {
// First update params normally
super.setParams(newParams);
// Then check if filters changed (for test contexts)
this.#checkAndResetFilters(newParams);
}
/** /**
* Set providers filter * Set providers filter
*/ */

490
src/entities/Font/model/store/unifiedFontStore/unifiedFontStore.test.ts
View File

@@ -1,490 +0,0 @@
import { QueryClient } from '@tanstack/query-core';
import { tick } from 'svelte';
import {
afterEach,
beforeEach,
describe,
expect,
it,
vi,
} from 'vitest';
import {
FontNetworkError,
FontResponseError,
} from '../../../lib/errors/errors';
vi.mock('$shared/api/queryClient', () => ({
queryClient: new QueryClient({
defaultOptions: {
queries: {
retry: 0,
gcTime: 0,
},
},
}),
}));
vi.mock('../../../api', () => ({
fetchProxyFonts: vi.fn(),
}));
import { queryClient } from '$shared/api/queryClient';
import { flushSync } from 'svelte';
import { fetchProxyFonts } from '../../../api';
import {
generateMixedCategoryFonts,
generateMockFonts,
} from '../../../lib/mocks/fonts.mock';
import type { UnifiedFont } from '../../types';
import { UnifiedFontStore } from './unifiedFontStore.svelte';
const mockedFetch = fetchProxyFonts as ReturnType<typeof vi.fn>;
const makeResponse = (
fonts: UnifiedFont[],
meta: { total?: number; limit?: number; offset?: number } = {},
) => ({
fonts,
total: meta.total ?? fonts.length,
limit: meta.limit ?? 10,
offset: meta.offset ?? 0,
});
describe('fetchFn — error paths', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('sets isError and error getter when fetchProxyFonts throws', async () => {
mockedFetch.mockRejectedValue(new Error('network down'));
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontNetworkError);
expect((store.error as FontNetworkError).cause).toBeInstanceOf(Error);
expect(store.isError).toBe(true);
});
it('throws FontResponseError when response is falsy', async () => {
mockedFetch.mockResolvedValue(undefined);
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontResponseError);
expect((store.error as FontResponseError).field).toBe('response');
});
it('throws FontResponseError when response.fonts is missing', async () => {
mockedFetch.mockResolvedValue({ total: 0, limit: 10, offset: 0 });
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontResponseError);
expect((store.error as FontResponseError).field).toBe('response.fonts');
});
it('throws FontResponseError when response.fonts is not an array', async () => {
mockedFetch.mockResolvedValue({ fonts: 'bad', total: 0, limit: 10, offset: 0 });
await store.refetch().catch((e: unknown) => e);
expect(store.error).toBeInstanceOf(FontResponseError);
expect((store.error as FontResponseError).field).toBe('response.fonts');
expect((store.error as FontResponseError).received).toBe('bad');
});
});
describe('fetchFn — success path', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('populates fonts after a successful fetch', async () => {
const fonts = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(fonts));
await store.refetch();
expect(store.fonts).toHaveLength(3);
expect(store.fonts[0].id).toBe(fonts[0].id);
});
it('stores pagination metadata from response', async () => {
const fonts = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: 30, limit: 10, offset: 0 }));
await store.refetch();
expect(store.pagination.total).toBe(30);
expect(store.pagination.limit).toBe(10);
expect(store.pagination.offset).toBe(0);
});
it('replaces accumulated fonts on offset-0 fetch', async () => {
const first = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(first));
await store.refetch();
flushSync();
console.log('After first refetch + flushSync:', store.fonts.length);
const second = generateMockFonts(2);
mockedFetch.mockResolvedValue(makeResponse(second));
await store.refetch();
console.log('After second refetch, before flushSync:', store.fonts.length, store.fonts.map(f => f.id));
flushSync();
console.log('After second refetch + flushSync:', store.fonts.length, store.fonts.map(f => f.id));
expect(store.fonts).toHaveLength(2);
expect(store.fonts[0].id).toBe(second[0].id);
});
it('appends fonts when fetching at offset > 0', async () => {
const firstPage = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(firstPage, { total: 6, limit: 3, offset: 0 }));
await store.refetch();
const secondPage = generateMockFonts(3).map((f, i) => ({
...f,
id: `page2-font-${i + 1}`,
}));
mockedFetch.mockResolvedValue(makeResponse(secondPage, { total: 6, limit: 3, offset: 3 }));
store.setParams({ offset: 3 });
await store.refetch();
expect(store.fonts).toHaveLength(6);
expect(store.fonts.slice(0, 3).map(f => f.id)).toEqual(firstPage.map(f => f.id));
expect(store.fonts.slice(3).map(f => f.id)).toEqual(secondPage.map(f => f.id));
});
});
describe('pagination state', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('returns default pagination before any fetch', () => {
expect(store.pagination.total).toBe(0);
expect(store.pagination.hasMore).toBe(false);
expect(store.pagination.page).toBe(1);
expect(store.pagination.totalPages).toBe(0);
});
it('computes hasMore as true when more pages remain', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 30, limit: 10, offset: 0 }));
await store.refetch();
expect(store.pagination.hasMore).toBe(true);
});
it('computes hasMore as false on last page', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 20, limit: 10, offset: 10 }));
store.setParams({ offset: 10 });
await store.refetch();
expect(store.pagination.hasMore).toBe(false);
});
it('computes page and totalPages from response metadata', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 30, limit: 10, offset: 10 }));
store.setParams({ offset: 10 });
await store.refetch();
expect(store.pagination.page).toBe(2);
expect(store.pagination.totalPages).toBe(3);
});
});
describe('pagination navigation', () => {
let store: UnifiedFontStore;
beforeEach(async () => {
store = new UnifiedFontStore({ limit: 10 });
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 30, limit: 10, offset: 0 }));
await store.refetch();
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('nextPage() advances offset by limit when hasMore', () => {
store.nextPage();
expect(store.params.offset).toBe(10);
});
it('nextPage() does nothing when hasMore is false', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(10), { total: 20, limit: 10, offset: 10 }));
store.setParams({ offset: 10 });
await store.refetch();
store.nextPage();
expect(store.params.offset).toBe(10);
});
it('prevPage() decrements offset by limit when on page > 1', () => {
store.setParams({ offset: 10 });
store.prevPage();
expect(store.params.offset).toBe(0);
});
it('prevPage() does nothing on the first page', () => {
store.prevPage();
expect(store.params.offset).toBe(0);
});
it('goToPage() sets the correct offset', () => {
store.goToPage(2);
expect(store.params.offset).toBe(10);
});
it('goToPage() does nothing for page 0', () => {
store.goToPage(0);
expect(store.params.offset).toBe(0);
});
it('goToPage() does nothing for page beyond totalPages', () => {
store.goToPage(99);
expect(store.params.offset).toBe(0);
});
it('setLimit() updates the limit param', () => {
store.setLimit(25);
expect(store.params.limit).toBe(25);
});
});
describe('filter setters', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('setProviders() updates the providers param', () => {
store.setProviders(['google']);
expect(store.params.providers).toEqual(['google']);
});
it('setCategories() updates the categories param', () => {
store.setCategories(['serif']);
expect(store.params.categories).toEqual(['serif']);
});
it('setSubsets() updates the subsets param', () => {
store.setSubsets(['cyrillic']);
expect(store.params.subsets).toEqual(['cyrillic']);
});
it('setSearch() sets the q param', () => {
store.setSearch('roboto');
expect(store.params.q).toBe('roboto');
});
it('setSearch() with empty string sets q to undefined', () => {
store.setSearch('roboto');
store.setSearch('');
expect(store.params.q).toBeUndefined();
});
it('setSort() updates the sort param', () => {
store.setSort('popularity');
expect(store.params.sort).toBe('popularity');
});
});
describe('filter change resets pagination', () => {
let store: UnifiedFontStore;
beforeEach(async () => {
store = new UnifiedFontStore({ limit: 10 });
// Let the initial effect run so #previousFilterParams is set.
// Without this, the first filter change is treated as initialisation, not a reset.
await tick();
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('resets offset to 0 when a filter changes', async () => {
store.setParams({ offset: 20 });
store.setSearch('roboto');
await tick();
expect(store.params.offset).toBe(0);
});
it('clears accumulated fonts when a filter changes', async () => {
const fonts = generateMockFonts(3);
mockedFetch.mockResolvedValue(makeResponse(fonts));
await store.refetch();
expect(store.fonts).toHaveLength(3);
store.setSearch('roboto');
await tick();
expect(store.fonts).toHaveLength(0);
});
});
describe('category getters', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('sansSerifFonts returns only sans-serif fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.fonts).toHaveLength(10);
expect(store.sansSerifFonts).toHaveLength(2);
expect(store.sansSerifFonts.every(f => f.category === 'sans-serif')).toBe(true);
});
it('serifFonts returns only serif fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.serifFonts).toHaveLength(2);
expect(store.serifFonts.every(f => f.category === 'serif')).toBe(true);
});
it('displayFonts returns only display fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.displayFonts).toHaveLength(2);
expect(store.displayFonts.every(f => f.category === 'display')).toBe(true);
});
it('handwritingFonts returns only handwriting fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.handwritingFonts).toHaveLength(2);
expect(store.handwritingFonts.every(f => f.category === 'handwriting')).toBe(true);
});
it('monospaceFonts returns only monospace fonts', async () => {
const fonts = generateMixedCategoryFonts(2);
mockedFetch.mockResolvedValue(makeResponse(fonts, { total: fonts.length, limit: fonts.length }));
await store.refetch();
expect(store.monospaceFonts).toHaveLength(2);
expect(store.monospaceFonts.every(f => f.category === 'monospace')).toBe(true);
});
});
describe('isEmpty', () => {
let store: UnifiedFontStore;
beforeEach(() => {
store = new UnifiedFontStore({ limit: 10 });
});
afterEach(() => {
store.destroy();
queryClient.clear();
vi.resetAllMocks();
});
it('is true when fetch returns no fonts', async () => {
mockedFetch.mockResolvedValue(makeResponse([]));
await store.refetch();
expect(store.isEmpty).toBe(true);
});
it('is false when fonts are present', async () => {
mockedFetch.mockResolvedValue(makeResponse(generateMockFonts(3)));
await store.refetch();
expect(store.isEmpty).toBe(false);
});
it('is true after an error (no fonts loaded)', async () => {
mockedFetch.mockRejectedValue(new Error('network down'));
await store.refetch().catch((e: unknown) => e);
expect(store.isEmpty).toBe(true);
});
});
describe('destroy', () => {
it('can be called without throwing', () => {
const store = new UnifiedFontStore({ limit: 10 });
expect(() => {
store.destroy();
}).not.toThrow();
});
it('sets filterCleanup to null so it is not called again', () => {
const store = new UnifiedFontStore({ limit: 10 });
store.destroy();
// Second destroy should not throw even though filterCleanup is now null
expect(() => {
store.destroy();
}).not.toThrow();
});
});