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-rw-r--r--src/test/rgw/test_rgw_reshard.cc68
1 files changed, 68 insertions, 0 deletions
diff --git a/src/test/rgw/test_rgw_reshard.cc b/src/test/rgw/test_rgw_reshard.cc
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+++ b/src/test/rgw/test_rgw_reshard.cc
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2019 Red Hat
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#include "rgw/rgw_reshard.h"
+#include <gtest/gtest.h>
+
+
+TEST(TestRGWReshard, dynamic_reshard_shard_count)
+{
+ // assuming we have prime numbers up to 1999
+ ASSERT_EQ(1999u, RGWBucketReshard::get_max_prime_shards()) <<
+ "initial list has primes up to 1999";
+
+ ASSERT_EQ(1u, RGWBucketReshard::get_prime_shards_greater_or_equal(1)) <<
+ "we allow for 1 shard even though it's not prime";
+ ASSERT_EQ(809u, RGWBucketReshard::get_prime_shards_greater_or_equal(808)) <<
+ "809 is prime";
+ ASSERT_EQ(809u, RGWBucketReshard::get_prime_shards_greater_or_equal(809)) <<
+ "809 is prime";
+ ASSERT_EQ(811u, RGWBucketReshard::get_prime_shards_greater_or_equal(810)) <<
+ "811 is prime";
+ ASSERT_EQ(811u, RGWBucketReshard::get_prime_shards_greater_or_equal(811)) <<
+ "811 is prime";
+ ASSERT_EQ(821u, RGWBucketReshard::get_prime_shards_greater_or_equal(812)) <<
+ "821 is prime";
+
+ ASSERT_EQ(1u, RGWBucketReshard::get_prime_shards_less_or_equal(1)) <<
+ "we allow for 1 shard even though it's not prime";
+ ASSERT_EQ(797u, RGWBucketReshard::get_prime_shards_less_or_equal(808)) <<
+ "809 is prime";
+ ASSERT_EQ(809u, RGWBucketReshard::get_prime_shards_less_or_equal(809)) <<
+ "809 is prime";
+ ASSERT_EQ(809u, RGWBucketReshard::get_prime_shards_less_or_equal(810)) <<
+ "811 is prime";
+ ASSERT_EQ(811u, RGWBucketReshard::get_prime_shards_less_or_equal(811)) <<
+ "811 is prime";
+ ASSERT_EQ(811u, RGWBucketReshard::get_prime_shards_less_or_equal(812)) <<
+ "821 is prime";
+
+ // tests when max dynamic shards is equal to end of prime list
+ ASSERT_EQ(1999u, RGWBucketReshard::get_preferred_shards(1998, 1999));
+ ASSERT_EQ(1999u, RGWBucketReshard::get_preferred_shards(1999, 1999));
+ ASSERT_EQ(1999u, RGWBucketReshard::get_preferred_shards(2000, 1999));
+ ASSERT_EQ(1999u, RGWBucketReshard::get_preferred_shards(2001, 1999));
+
+ // tests when max dynamic shards is above end of prime list
+ ASSERT_EQ(1999u, RGWBucketReshard::get_preferred_shards(1998, 3000));
+ ASSERT_EQ(1999u, RGWBucketReshard::get_preferred_shards(1999, 3000));
+ ASSERT_EQ(2000u, RGWBucketReshard::get_preferred_shards(2000, 3000));
+ ASSERT_EQ(2001u, RGWBucketReshard::get_preferred_shards(2001, 3000));
+
+ // tests when max dynamic shards is below end of prime list
+ ASSERT_EQ(499u, RGWBucketReshard::get_preferred_shards(1998, 500));
+ ASSERT_EQ(499u, RGWBucketReshard::get_preferred_shards(1999, 500));
+ ASSERT_EQ(499u, RGWBucketReshard::get_preferred_shards(2000, 500));
+ ASSERT_EQ(499u, RGWBucketReshard::get_preferred_shards(2001, 500));
+}