Use stub in test from the 2nd time onwards

src/exporter/files.test.ts

@@ -1,3 +1,4 @@
+import fs from 'fs/promises'
 import { test } from 'uvu'
 import * as td from 'testdouble'
 import * as assert from 'uvu/assert'
@@ -14,6 +15,31 @@ type GHRes = {
   documentation_url: string
 }
 
+function urlToFilename(u: string) {
+  return u.replace('://', '_').replace(/\./g, '_').replace(/\//g, '_')
+}
+
+async function vcr (reqUrl: string) {
+  const dir = 'testdata/vcr'
+  const p = `${dir}/${urlToFilename(reqUrl)}.txt`
+  try {
+    const str = await fs.readFile(p, 'utf-8')
+    return str
+  } catch (_) {
+  }
+
+  try {
+    const str = await files.getHTTP(reqUrl)
+    await files.createDirWhenNotfound(dir)
+    await fs.writeFile(p, str)
+    return str
+  } catch (e) {
+    console.error(e.message, e.name)
+  }
+
+  return ''
+}
+
 test('getHtmlMeta returns title and desc', async () => {
   const tests = [
     [
@@ -71,12 +97,12 @@ test('getHtmlMeta returns title and desc', async () => {
       'Online communities include people from many different backgrounds. The Go contributors are committed to providing a friendly, safe and welcoming environment for all, regardless of gender identity and expression, sexual orientation, disabilities, neurodiversity, physical appearance, body size, ethnicity, nationality, race, age, religion, or similar personal characteristics.',
       '/images/html-image-dd81b68c375850259cdb26e64618e339c4eec3c3.webp',
       '/images/html-icon-77014b367198f9878ea91bdccd6bb3fce2a5ee2a-7f5e06b5d5dc8f2fac131fd56215ae5ca767a98c.webp',
-    ]
+    ],
   ]
 
   for (const t of tests) {
     const [url, title, desc, image, icon] = t
-    const re = await files.getHtmlMeta(url)
+    const re = await files.getHtmlMeta(url, vcr)
     assert.equal(re.title, title)
     assert.equal(re.desc, desc)
     assert.equal(re.image, image)

src/exporter/files.ts

@@ -161,7 +161,7 @@ async function httpsGetWithFollowRedirects (reqUrl: string, redirectCount?: numb
   }
 }
 
-async function getHTTP (reqUrl: string, redirectCount?: number): Promise<string> {
+export async function getHTTP (reqUrl: string, redirectCount?: number): Promise<string> {
   if (!redirectCount) {
     redirectCount = 0
   }
@@ -401,9 +401,9 @@ export const findImage = (html: string): string | null => {
   return null
 }
 
-export const getHtmlMeta = async (reqUrl: string): Promise<{ title: string, desc: string, image: string, icon: string }> => {
+export const getHtmlMeta = async (reqUrl: string, httpFunc?: (reqUrl: string) => Promise<string>): Promise<{ title: string, desc: string, image: string, icon: string }> => {
   try {
-    const resbody = await getHTTP(reqUrl)
+    const resbody = httpFunc ? await httpFunc(reqUrl) : await getHTTP(reqUrl)
     const body = resbody.replace(/\n/g, ' ')
 
     const title = findHtmlByRegexp(titleRegexps, body) || ''