func testInstCache(t *testing.T, expected *stats.APTBucketReaderStats, actual *stats.APTBucketReaderStats) {
	for _, inst := range expected.InstitutionsCached {
		assert.True(t, actual.InstitutionsCachedContains(inst.Identifier),
			"Institution %s missing from inst cache", inst.Identifier)
	}
}