Fascinated/node-fetch-cache
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add support for only-if-cached and expose cache key calculation function

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mistval
2023-03-13 20:59:09 -04:00
parent 4f93c9ba1c
commit 5f48f0fc8a
5 changed files with 147 additions and 19 deletions
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55
test/tests.js
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@ -7,7 +7,7 @@ import rimraf from 'rimraf';
import path from 'path';
import { URLSearchParams } from 'url';
import standardFetch from 'node-fetch';
import FetchCache, { MemoryCache, FileSystemCache } from '../src/index.js';
import FetchCache, { MemoryCache, FileSystemCache, getCacheKey } from '../src/index.js';
import { Agent } from 'http';
const __dirname = dirname(fileURLToPath(import.meta.url));
@ -326,6 +326,17 @@ describe('Data tests', function() {
assert.strictEqual(res.fromCache, true);
});
it('Supports request objects with custom headers', async function() {
const request1 = new standardFetch.Request(TWO_HUNDRED_URL, { headers: { 'XXX': 'YYY' } });
const request2 = new standardFetch.Request(TWO_HUNDRED_URL, { headers: { 'XXX': 'ZZZ' } });
res = await cachedFetch(request1);
assert.strictEqual(res.fromCache, false);
res = await cachedFetch(request2);
assert.strictEqual(res.fromCache, false);
});
it('Refuses to consume body twice', async function() {
res = await cachedFetch(TEXT_BODY_URL);
await res.text();
@ -476,3 +487,45 @@ describe('File system cache tests', function() {
assert.strictEqual(res.fromCache, true);
});
});
describe('Cache mode tests', function() {
it('Can use the only-if-cached cache control setting via init', async function() {
res = await cachedFetch(TWO_HUNDRED_URL, { headers: { 'Cache-Control': 'only-if-cached' } });
assert(!res);
res = await cachedFetch(TWO_HUNDRED_URL, { headers: { 'Cache-Control': 'only-if-cached' } });
assert(!res);
res = await cachedFetch(TWO_HUNDRED_URL);
assert(res && !res.fromCache);
res = await cachedFetch(TWO_HUNDRED_URL, { headers: { 'Cache-Control': 'only-if-cached' } });
assert(res && res.fromCache);
await res.ejectFromCache();
res = await cachedFetch(TWO_HUNDRED_URL, { headers: { 'Cache-Control': 'only-if-cached' } });
assert(!res);
});
it('Can use the only-if-cached cache control setting via resource', async function() {
res = await cachedFetch(new standardFetch.Request(TWO_HUNDRED_URL, { headers: { 'Cache-Control': 'only-if-cached' } }));
assert(!res);
res = await cachedFetch(new standardFetch.Request(TWO_HUNDRED_URL));
assert(res && !res.fromCache);
res = await cachedFetch(new standardFetch.Request(TWO_HUNDRED_URL, { headers: { 'Cache-Control': 'only-if-cached' } }));
assert(res && res.fromCache);
});
});
describe('Cache key tests', function() {
it('Can calculate a cache key and check that it exists', async function() {
const cache = new MemoryCache();
cachedFetch = FetchCache.withCache(cache);
await cachedFetch(TWO_HUNDRED_URL);
const cacheKey = getCacheKey(TWO_HUNDRED_URL);
const nonExistentCacheKey = getCacheKey(TEXT_BODY_URL);
const cacheKeyResult = await cache.get(cacheKey);
const nonExistentCacheKeyResult = await cache.get(nonExistentCacheKey);
assert(cacheKeyResult);
assert(!nonExistentCacheKeyResult);
});
});