Attempt to limit failures in wrapper-validation tests (#490)

- Reduce requests involved in checksums.retryTest
- Reduce requests involved in validate test
- Fetch checksum values in batches

sources/test/jest/wrapper-validation/checksums.test.ts

@@ -2,7 +2,7 @@ import * as checksums from '../../../src/wrapper-validation/checksums'
 import nock from 'nock'
 import {afterEach, describe, expect, test, jest} from '@jest/globals'
 
-jest.setTimeout(30000)
+jest.setTimeout(60000)
 
 const CHECKSUM_8_1 = 'ed2c26eba7cfb93cc2b7785d05e534f07b5b48b5e7fc941921cd098628abca58'
 
@@ -70,8 +70,8 @@ describe('retry', () => {
           code: 'ECONNREFUSED'
         })
 
-      const validChecksums = await checksums.fetchUnknownChecksums(false, new checksums.WrapperChecksums)
-      expect(validChecksums.checksums.size).toBeGreaterThan(10)
+      const validChecksums = await checksums.fetchUnknownChecksums(false, knownChecksumsWithout8_1())
+      expect(validChecksums.checksums.size).toBeGreaterThan(0)
       nock.isDone()
     })
   })