add update functionality

tests/releases.test.mjs

@@ -6,7 +6,7 @@ import { join } from 'node:path'
 import { stringify } from 'yaml'
 import { createBuildConfig, validateFeedUrl, APP_ID } from '../build/config.mjs'
 import { digest, writeReleaseManifest, verifyRelease } from '../scripts/releaseArtifacts.mjs'
-import { uploadRelease } from '../scripts/uploadRelease.mjs'
+import { uploadRelease, UPLOAD_CHUNK_SIZE } from '../scripts/uploadRelease.mjs'
 
 const feed = 'https://downloads.thetempusproject.com/capsule/windows/x64/'
 const env = { CAPSULE_UPDATE_URL: feed, CAPSULE_PUBLISHER_NAME: 'Test Publisher', CSC_NAME: 'Test Publisher' }
@@ -100,3 +100,22 @@ test('upload stops before metadata on failed upload or mismatched public artifac
     assert.ok(calls.every((path) => !path.endsWith('latest.yml')))
   }
 })
+
+test('large artifacts use contiguous bounded chunks and verify the assembled public file', async () => {
+  const data = Buffer.alloc(UPLOAD_CHUNK_SIZE * 2 + 17, 42)
+  const requests = []
+  await uploadRelease({ feedUrl: feed, files: [{ name: 'Capsule-0.1.1-x64-Setup.exe', data }] }, {
+    uploadUrl: 'https://upload.thetempusproject.com/capsule/upload/', token: 'test-token', log: () => {},
+    fetchImpl: async (_url, options) => {
+      if (options.method !== 'PUT') return { ok: true, arrayBuffer: async () => data }
+      requests.push(options)
+      return { ok: true, status: requests.length < 3 ? 202 : 201 }
+    }
+  })
+  assert.equal(requests.length, 3)
+  assert.deepEqual(requests.map((request) => request.headers['Content-Range']), [
+    `bytes 0-524287/${data.length}`, `bytes 524288-1048575/${data.length}`, `bytes 1048576-1048592/${data.length}`
+  ])
+  assert.equal(new Set(requests.map((request) => request.headers['X-Capsule-Upload-Id'])).size, 1)
+  assert.deepEqual(Buffer.concat(requests.map((request) => request.body)), data)
+})